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Diffstat (limited to '')
| -rw-r--r-- | src/test/regress/sql/window.sql | 1745 |
1 files changed, 1745 insertions, 0 deletions
diff --git a/src/test/regress/sql/window.sql b/src/test/regress/sql/window.sql new file mode 100644 index 0000000..c0ad51c --- /dev/null +++ b/src/test/regress/sql/window.sql @@ -0,0 +1,1745 @@ +-- +-- WINDOW FUNCTIONS +-- + +CREATE TEMPORARY TABLE empsalary ( + depname varchar, + empno bigint, + salary int, + enroll_date date +); + +INSERT INTO empsalary VALUES +('develop', 10, 5200, '2007-08-01'), +('sales', 1, 5000, '2006-10-01'), +('personnel', 5, 3500, '2007-12-10'), +('sales', 4, 4800, '2007-08-08'), +('personnel', 2, 3900, '2006-12-23'), +('develop', 7, 4200, '2008-01-01'), +('develop', 9, 4500, '2008-01-01'), +('sales', 3, 4800, '2007-08-01'), +('develop', 8, 6000, '2006-10-01'), +('develop', 11, 5200, '2007-08-15'); + +SELECT depname, empno, salary, sum(salary) OVER (PARTITION BY depname) FROM empsalary ORDER BY depname, salary; + +SELECT depname, empno, salary, rank() OVER (PARTITION BY depname ORDER BY salary) FROM empsalary; + +-- with GROUP BY +SELECT four, ten, SUM(SUM(four)) OVER (PARTITION BY four), AVG(ten) FROM tenk1 +GROUP BY four, ten ORDER BY four, ten; + +SELECT depname, empno, salary, sum(salary) OVER w FROM empsalary WINDOW w AS (PARTITION BY depname); + +SELECT depname, empno, salary, rank() OVER w FROM empsalary WINDOW w AS (PARTITION BY depname ORDER BY salary) ORDER BY rank() OVER w; + +-- empty window specification +SELECT COUNT(*) OVER () FROM tenk1 WHERE unique2 < 10; + +SELECT COUNT(*) OVER w FROM tenk1 WHERE unique2 < 10 WINDOW w AS (); + +-- no window operation +SELECT four FROM tenk1 WHERE FALSE WINDOW w AS (PARTITION BY ten); + +-- cumulative aggregate +SELECT sum(four) OVER (PARTITION BY ten ORDER BY unique2) AS sum_1, ten, four FROM tenk1 WHERE unique2 < 10; + +SELECT row_number() OVER (ORDER BY unique2) FROM tenk1 WHERE unique2 < 10; + +SELECT rank() OVER (PARTITION BY four ORDER BY ten) AS rank_1, ten, four FROM tenk1 WHERE unique2 < 10; + +SELECT dense_rank() OVER (PARTITION BY four ORDER BY ten), ten, four FROM tenk1 WHERE unique2 < 10; + +SELECT percent_rank() OVER (PARTITION BY four ORDER BY ten), ten, four FROM tenk1 WHERE unique2 < 10; + +SELECT cume_dist() OVER (PARTITION BY four ORDER BY ten), ten, four FROM tenk1 WHERE unique2 < 10; + +SELECT ntile(3) OVER (ORDER BY ten, four), ten, four FROM tenk1 WHERE unique2 < 10; + +SELECT ntile(NULL) OVER (ORDER BY ten, four), ten, four FROM tenk1 LIMIT 2; + +SELECT lag(ten) OVER (PARTITION BY four ORDER BY ten), ten, four FROM tenk1 WHERE unique2 < 10; + +SELECT lag(ten, four) OVER (PARTITION BY four ORDER BY ten), ten, four FROM tenk1 WHERE unique2 < 10; + +SELECT lag(ten, four, 0) OVER (PARTITION BY four ORDER BY ten), ten, four FROM tenk1 WHERE unique2 < 10; +SELECT lag(ten, four, 0.7) OVER (PARTITION BY four ORDER BY ten), ten, four FROM tenk1 WHERE unique2 < 10 ORDER BY four, ten; + +SELECT lead(ten) OVER (PARTITION BY four ORDER BY ten), ten, four FROM tenk1 WHERE unique2 < 10; + +SELECT lead(ten * 2, 1) OVER (PARTITION BY four ORDER BY ten), ten, four FROM tenk1 WHERE unique2 < 10; + +SELECT lead(ten * 2, 1, -1) OVER (PARTITION BY four ORDER BY ten), ten, four FROM tenk1 WHERE unique2 < 10; +SELECT lead(ten * 2, 1, -1.4) OVER (PARTITION BY four ORDER BY ten), ten, four FROM tenk1 WHERE unique2 < 10 ORDER BY four, ten; + +SELECT first_value(ten) OVER (PARTITION BY four ORDER BY ten), ten, four FROM tenk1 WHERE unique2 < 10; + +-- last_value returns the last row of the frame, which is CURRENT ROW in ORDER BY window. +SELECT last_value(four) OVER (ORDER BY ten), ten, four FROM tenk1 WHERE unique2 < 10; + +SELECT last_value(ten) OVER (PARTITION BY four), ten, four FROM + (SELECT * FROM tenk1 WHERE unique2 < 10 ORDER BY four, ten)s + ORDER BY four, ten; + +SELECT nth_value(ten, four + 1) OVER (PARTITION BY four), ten, four + FROM (SELECT * FROM tenk1 WHERE unique2 < 10 ORDER BY four, ten)s; + +SELECT ten, two, sum(hundred) AS gsum, sum(sum(hundred)) OVER (PARTITION BY two ORDER BY ten) AS wsum +FROM tenk1 GROUP BY ten, two; + +SELECT count(*) OVER (PARTITION BY four), four FROM (SELECT * FROM tenk1 WHERE two = 1)s WHERE unique2 < 10; + +SELECT (count(*) OVER (PARTITION BY four ORDER BY ten) + + sum(hundred) OVER (PARTITION BY four ORDER BY ten))::varchar AS cntsum + FROM tenk1 WHERE unique2 < 10; + +-- opexpr with different windows evaluation. +SELECT * FROM( + SELECT count(*) OVER (PARTITION BY four ORDER BY ten) + + sum(hundred) OVER (PARTITION BY two ORDER BY ten) AS total, + count(*) OVER (PARTITION BY four ORDER BY ten) AS fourcount, + sum(hundred) OVER (PARTITION BY two ORDER BY ten) AS twosum + FROM tenk1 +)sub +WHERE total <> fourcount + twosum; + +SELECT avg(four) OVER (PARTITION BY four ORDER BY thousand / 100) FROM tenk1 WHERE unique2 < 10; + +SELECT ten, two, sum(hundred) AS gsum, sum(sum(hundred)) OVER win AS wsum +FROM tenk1 GROUP BY ten, two WINDOW win AS (PARTITION BY two ORDER BY ten); + +-- more than one window with GROUP BY +SELECT sum(salary), + row_number() OVER (ORDER BY depname), + sum(sum(salary)) OVER (ORDER BY depname DESC) +FROM empsalary GROUP BY depname; + +-- identical windows with different names +SELECT sum(salary) OVER w1, count(*) OVER w2 +FROM empsalary WINDOW w1 AS (ORDER BY salary), w2 AS (ORDER BY salary); + +-- subplan +SELECT lead(ten, (SELECT two FROM tenk1 WHERE s.unique2 = unique2)) OVER (PARTITION BY four ORDER BY ten) +FROM tenk1 s WHERE unique2 < 10; + +-- empty table +SELECT count(*) OVER (PARTITION BY four) FROM (SELECT * FROM tenk1 WHERE FALSE)s; + +-- mixture of agg/wfunc in the same window +SELECT sum(salary) OVER w, rank() OVER w FROM empsalary WINDOW w AS (PARTITION BY depname ORDER BY salary DESC); + +-- strict aggs +SELECT empno, depname, salary, bonus, depadj, MIN(bonus) OVER (ORDER BY empno), MAX(depadj) OVER () FROM( + SELECT *, + CASE WHEN enroll_date < '2008-01-01' THEN 2008 - extract(YEAR FROM enroll_date) END * 500 AS bonus, + CASE WHEN + AVG(salary) OVER (PARTITION BY depname) < salary + THEN 200 END AS depadj FROM empsalary +)s; + +-- window function over ungrouped agg over empty row set (bug before 9.1) +SELECT SUM(COUNT(f1)) OVER () FROM int4_tbl WHERE f1=42; + +-- window function with ORDER BY an expression involving aggregates (9.1 bug) +select ten, + sum(unique1) + sum(unique2) as res, + rank() over (order by sum(unique1) + sum(unique2)) as rank +from tenk1 +group by ten order by ten; + +-- window and aggregate with GROUP BY expression (9.2 bug) +explain (costs off) +select first_value(max(x)) over (), y + from (select unique1 as x, ten+four as y from tenk1) ss + group by y; + +-- window functions returning pass-by-ref values from different rows +select x, lag(x, 1) over (order by x), lead(x, 3) over (order by x) +from (select x::numeric as x from generate_series(1,10) x); + +-- test non-default frame specifications +SELECT four, ten, + sum(ten) over (partition by four order by ten), + last_value(ten) over (partition by four order by ten) +FROM (select distinct ten, four from tenk1) ss; + +SELECT four, ten, + sum(ten) over (partition by four order by ten range between unbounded preceding and current row), + last_value(ten) over (partition by four order by ten range between unbounded preceding and current row) +FROM (select distinct ten, four from tenk1) ss; + +SELECT four, ten, + sum(ten) over (partition by four order by ten range between unbounded preceding and unbounded following), + last_value(ten) over (partition by four order by ten range between unbounded preceding and unbounded following) +FROM (select distinct ten, four from tenk1) ss; + +SELECT four, ten/4 as two, + sum(ten/4) over (partition by four order by ten/4 range between unbounded preceding and current row), + last_value(ten/4) over (partition by four order by ten/4 range between unbounded preceding and current row) +FROM (select distinct ten, four from tenk1) ss; + +SELECT four, ten/4 as two, + sum(ten/4) over (partition by four order by ten/4 rows between unbounded preceding and current row), + last_value(ten/4) over (partition by four order by ten/4 rows between unbounded preceding and current row) +FROM (select distinct ten, four from tenk1) ss; + +SELECT sum(unique1) over (order by four range between current row and unbounded following), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (rows between current row and unbounded following), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (rows between 2 preceding and 2 following), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (rows between 2 preceding and 2 following exclude no others), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (rows between 2 preceding and 2 following exclude current row), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (rows between 2 preceding and 2 following exclude group), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (rows between 2 preceding and 2 following exclude ties), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT first_value(unique1) over (ORDER BY four rows between current row and 2 following exclude current row), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT first_value(unique1) over (ORDER BY four rows between current row and 2 following exclude group), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT first_value(unique1) over (ORDER BY four rows between current row and 2 following exclude ties), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT last_value(unique1) over (ORDER BY four rows between current row and 2 following exclude current row), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT last_value(unique1) over (ORDER BY four rows between current row and 2 following exclude group), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT last_value(unique1) over (ORDER BY four rows between current row and 2 following exclude ties), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (rows between 2 preceding and 1 preceding), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (rows between 1 following and 3 following), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (rows between unbounded preceding and 1 following), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (w range between current row and unbounded following), + unique1, four +FROM tenk1 WHERE unique1 < 10 WINDOW w AS (order by four); + +SELECT sum(unique1) over (w range between unbounded preceding and current row exclude current row), + unique1, four +FROM tenk1 WHERE unique1 < 10 WINDOW w AS (order by four); + +SELECT sum(unique1) over (w range between unbounded preceding and current row exclude group), + unique1, four +FROM tenk1 WHERE unique1 < 10 WINDOW w AS (order by four); + +SELECT sum(unique1) over (w range between unbounded preceding and current row exclude ties), + unique1, four +FROM tenk1 WHERE unique1 < 10 WINDOW w AS (order by four); + +SELECT first_value(unique1) over w, + nth_value(unique1, 2) over w AS nth_2, + last_value(unique1) over w, unique1, four +FROM tenk1 WHERE unique1 < 10 +WINDOW w AS (order by four range between current row and unbounded following); + +SELECT sum(unique1) over + (order by unique1 + rows (SELECT unique1 FROM tenk1 ORDER BY unique1 LIMIT 1) + 1 PRECEDING), + unique1 +FROM tenk1 WHERE unique1 < 10; + +CREATE TEMP VIEW v_window AS + SELECT i, sum(i) over (order by i rows between 1 preceding and 1 following) as sum_rows + FROM generate_series(1, 10) i; + +SELECT * FROM v_window; + +SELECT pg_get_viewdef('v_window'); + +CREATE OR REPLACE TEMP VIEW v_window AS + SELECT i, sum(i) over (order by i rows between 1 preceding and 1 following + exclude current row) as sum_rows FROM generate_series(1, 10) i; + +SELECT * FROM v_window; + +SELECT pg_get_viewdef('v_window'); + +CREATE OR REPLACE TEMP VIEW v_window AS + SELECT i, sum(i) over (order by i rows between 1 preceding and 1 following + exclude group) as sum_rows FROM generate_series(1, 10) i; + +SELECT * FROM v_window; + +SELECT pg_get_viewdef('v_window'); + +CREATE OR REPLACE TEMP VIEW v_window AS + SELECT i, sum(i) over (order by i rows between 1 preceding and 1 following + exclude ties) as sum_rows FROM generate_series(1, 10) i; + +SELECT * FROM v_window; + +SELECT pg_get_viewdef('v_window'); + +CREATE OR REPLACE TEMP VIEW v_window AS + SELECT i, sum(i) over (order by i rows between 1 preceding and 1 following + exclude no others) as sum_rows FROM generate_series(1, 10) i; + +SELECT * FROM v_window; + +SELECT pg_get_viewdef('v_window'); + +CREATE OR REPLACE TEMP VIEW v_window AS + SELECT i, sum(i) over (order by i groups between 1 preceding and 1 following) as sum_rows FROM generate_series(1, 10) i; + +SELECT * FROM v_window; + +SELECT pg_get_viewdef('v_window'); + +DROP VIEW v_window; + +CREATE TEMP VIEW v_window AS + SELECT i, min(i) over (order by i range between '1 day' preceding and '10 days' following) as min_i + FROM generate_series(now(), now()+'100 days'::interval, '1 hour') i; + +SELECT pg_get_viewdef('v_window'); + +-- RANGE offset PRECEDING/FOLLOWING tests + +SELECT sum(unique1) over (order by four range between 2::int8 preceding and 1::int2 preceding), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four desc range between 2::int8 preceding and 1::int2 preceding), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four range between 2::int8 preceding and 1::int2 preceding exclude no others), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four range between 2::int8 preceding and 1::int2 preceding exclude current row), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four range between 2::int8 preceding and 1::int2 preceding exclude group), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four range between 2::int8 preceding and 1::int2 preceding exclude ties), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four range between 2::int8 preceding and 6::int2 following exclude ties), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four range between 2::int8 preceding and 6::int2 following exclude group), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (partition by four order by unique1 range between 5::int8 preceding and 6::int2 following), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (partition by four order by unique1 range between 5::int8 preceding and 6::int2 following + exclude current row),unique1, four +FROM tenk1 WHERE unique1 < 10; + +select sum(salary) over (order by enroll_date range between '1 year'::interval preceding and '1 year'::interval following), + salary, enroll_date from empsalary; + +select sum(salary) over (order by enroll_date desc range between '1 year'::interval preceding and '1 year'::interval following), + salary, enroll_date from empsalary; + +select sum(salary) over (order by enroll_date desc range between '1 year'::interval following and '1 year'::interval following), + salary, enroll_date from empsalary; + +select sum(salary) over (order by enroll_date range between '1 year'::interval preceding and '1 year'::interval following + exclude current row), salary, enroll_date from empsalary; + +select sum(salary) over (order by enroll_date range between '1 year'::interval preceding and '1 year'::interval following + exclude group), salary, enroll_date from empsalary; + +select sum(salary) over (order by enroll_date range between '1 year'::interval preceding and '1 year'::interval following + exclude ties), salary, enroll_date from empsalary; + +select first_value(salary) over(order by salary range between 1000 preceding and 1000 following), + lead(salary) over(order by salary range between 1000 preceding and 1000 following), + nth_value(salary, 1) over(order by salary range between 1000 preceding and 1000 following), + salary from empsalary; + +select last_value(salary) over(order by salary range between 1000 preceding and 1000 following), + lag(salary) over(order by salary range between 1000 preceding and 1000 following), + salary from empsalary; + +select first_value(salary) over(order by salary range between 1000 following and 3000 following + exclude current row), + lead(salary) over(order by salary range between 1000 following and 3000 following exclude ties), + nth_value(salary, 1) over(order by salary range between 1000 following and 3000 following + exclude ties), + salary from empsalary; + +select last_value(salary) over(order by salary range between 1000 following and 3000 following + exclude group), + lag(salary) over(order by salary range between 1000 following and 3000 following exclude group), + salary from empsalary; + +select first_value(salary) over(order by enroll_date range between unbounded preceding and '1 year'::interval following + exclude ties), + last_value(salary) over(order by enroll_date range between unbounded preceding and '1 year'::interval following), + salary, enroll_date from empsalary; + +select first_value(salary) over(order by enroll_date range between unbounded preceding and '1 year'::interval following + exclude ties), + last_value(salary) over(order by enroll_date range between unbounded preceding and '1 year'::interval following + exclude ties), + salary, enroll_date from empsalary; + +select first_value(salary) over(order by enroll_date range between unbounded preceding and '1 year'::interval following + exclude group), + last_value(salary) over(order by enroll_date range between unbounded preceding and '1 year'::interval following + exclude group), + salary, enroll_date from empsalary; + +select first_value(salary) over(order by enroll_date range between unbounded preceding and '1 year'::interval following + exclude current row), + last_value(salary) over(order by enroll_date range between unbounded preceding and '1 year'::interval following + exclude current row), + salary, enroll_date from empsalary; + +-- RANGE offset PRECEDING/FOLLOWING with null values +select x, y, + first_value(y) over w, + last_value(y) over w +from + (select x, x as y from generate_series(1,5) as x + union all select null, 42 + union all select null, 43) ss +window w as + (order by x asc nulls first range between 2 preceding and 2 following); + +select x, y, + first_value(y) over w, + last_value(y) over w +from + (select x, x as y from generate_series(1,5) as x + union all select null, 42 + union all select null, 43) ss +window w as + (order by x asc nulls last range between 2 preceding and 2 following); + +select x, y, + first_value(y) over w, + last_value(y) over w +from + (select x, x as y from generate_series(1,5) as x + union all select null, 42 + union all select null, 43) ss +window w as + (order by x desc nulls first range between 2 preceding and 2 following); + +select x, y, + first_value(y) over w, + last_value(y) over w +from + (select x, x as y from generate_series(1,5) as x + union all select null, 42 + union all select null, 43) ss +window w as + (order by x desc nulls last range between 2 preceding and 2 following); + +-- There is a syntactic ambiguity in the SQL standard. Since +-- UNBOUNDED is a non-reserved word, it could be the name of a +-- function parameter and be used as an expression. There is a +-- grammar hack to resolve such cases as the keyword. The following +-- tests record this behavior. + +CREATE FUNCTION unbounded_syntax_test1a(x int) RETURNS TABLE (a int, b int, c int) +LANGUAGE SQL +BEGIN ATOMIC + SELECT sum(unique1) over (rows between x preceding and x following), + unique1, four + FROM tenk1 WHERE unique1 < 10; +END; + +CREATE FUNCTION unbounded_syntax_test1b(x int) RETURNS TABLE (a int, b int, c int) +LANGUAGE SQL +AS $$ + SELECT sum(unique1) over (rows between x preceding and x following), + unique1, four + FROM tenk1 WHERE unique1 < 10; +$$; + +-- These will apply the argument to the window specification inside the function. +SELECT * FROM unbounded_syntax_test1a(2); +SELECT * FROM unbounded_syntax_test1b(2); + +CREATE FUNCTION unbounded_syntax_test2a(unbounded int) RETURNS TABLE (a int, b int, c int) +LANGUAGE SQL +BEGIN ATOMIC + SELECT sum(unique1) over (rows between unbounded preceding and unbounded following), + unique1, four + FROM tenk1 WHERE unique1 < 10; +END; + +CREATE FUNCTION unbounded_syntax_test2b(unbounded int) RETURNS TABLE (a int, b int, c int) +LANGUAGE SQL +AS $$ + SELECT sum(unique1) over (rows between unbounded preceding and unbounded following), + unique1, four + FROM tenk1 WHERE unique1 < 10; +$$; + +-- These will not apply the argument but instead treat UNBOUNDED as a keyword. +SELECT * FROM unbounded_syntax_test2a(2); +SELECT * FROM unbounded_syntax_test2b(2); + +DROP FUNCTION unbounded_syntax_test1a, unbounded_syntax_test1b, + unbounded_syntax_test2a, unbounded_syntax_test2b; + +-- Other tests with token UNBOUNDED in potentially problematic position +CREATE FUNCTION unbounded(x int) RETURNS int LANGUAGE SQL IMMUTABLE RETURN x; + +SELECT sum(unique1) over (rows between 1 preceding and 1 following), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (rows between unbounded(1) preceding and unbounded(1) following), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (rows between unbounded.x preceding and unbounded.x following), + unique1, four +FROM tenk1, (values (1)) as unbounded(x) WHERE unique1 < 10; + +DROP FUNCTION unbounded; + +-- Check overflow behavior for various integer sizes + +select x, last_value(x) over (order by x::smallint range between current row and 2147450884 following) +from generate_series(32764, 32766) x; + +select x, last_value(x) over (order by x::smallint desc range between current row and 2147450885 following) +from generate_series(-32766, -32764) x; + +select x, last_value(x) over (order by x range between current row and 4 following) +from generate_series(2147483644, 2147483646) x; + +select x, last_value(x) over (order by x desc range between current row and 5 following) +from generate_series(-2147483646, -2147483644) x; + +select x, last_value(x) over (order by x range between current row and 4 following) +from generate_series(9223372036854775804, 9223372036854775806) x; + +select x, last_value(x) over (order by x desc range between current row and 5 following) +from generate_series(-9223372036854775806, -9223372036854775804) x; + +-- Test in_range for other numeric datatypes + +create temp table numerics( + id int, + f_float4 float4, + f_float8 float8, + f_numeric numeric +); + +insert into numerics values +(0, '-infinity', '-infinity', '-infinity'), +(1, -3, -3, -3), +(2, -1, -1, -1), +(3, 0, 0, 0), +(4, 1.1, 1.1, 1.1), +(5, 1.12, 1.12, 1.12), +(6, 2, 2, 2), +(7, 100, 100, 100), +(8, 'infinity', 'infinity', 'infinity'), +(9, 'NaN', 'NaN', 'NaN'); + +select id, f_float4, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_float4 range between + 1 preceding and 1 following); +select id, f_float4, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_float4 range between + 1 preceding and 1.1::float4 following); +select id, f_float4, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_float4 range between + 'inf' preceding and 'inf' following); +select id, f_float4, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_float4 range between + 'inf' preceding and 'inf' preceding); +select id, f_float4, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_float4 range between + 'inf' following and 'inf' following); +select id, f_float4, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_float4 range between + 1.1 preceding and 'NaN' following); -- error, NaN disallowed + +select id, f_float8, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_float8 range between + 1 preceding and 1 following); +select id, f_float8, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_float8 range between + 1 preceding and 1.1::float8 following); +select id, f_float8, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_float8 range between + 'inf' preceding and 'inf' following); +select id, f_float8, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_float8 range between + 'inf' preceding and 'inf' preceding); +select id, f_float8, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_float8 range between + 'inf' following and 'inf' following); +select id, f_float8, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_float8 range between + 1.1 preceding and 'NaN' following); -- error, NaN disallowed + +select id, f_numeric, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_numeric range between + 1 preceding and 1 following); +select id, f_numeric, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_numeric range between + 1 preceding and 1.1::numeric following); +select id, f_numeric, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_numeric range between + 1 preceding and 1.1::float8 following); -- currently unsupported +select id, f_numeric, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_numeric range between + 'inf' preceding and 'inf' following); +select id, f_numeric, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_numeric range between + 'inf' preceding and 'inf' preceding); +select id, f_numeric, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_numeric range between + 'inf' following and 'inf' following); +select id, f_numeric, first_value(id) over w, last_value(id) over w +from numerics +window w as (order by f_numeric range between + 1.1 preceding and 'NaN' following); -- error, NaN disallowed + +-- Test in_range for other datetime datatypes + +create temp table datetimes( + id int, + f_time time, + f_timetz timetz, + f_interval interval, + f_timestamptz timestamptz, + f_timestamp timestamp +); + +insert into datetimes values +(1, '11:00', '11:00 BST', '1 year', '2000-10-19 10:23:54+01', '2000-10-19 10:23:54'), +(2, '12:00', '12:00 BST', '2 years', '2001-10-19 10:23:54+01', '2001-10-19 10:23:54'), +(3, '13:00', '13:00 BST', '3 years', '2001-10-19 10:23:54+01', '2001-10-19 10:23:54'), +(4, '14:00', '14:00 BST', '4 years', '2002-10-19 10:23:54+01', '2002-10-19 10:23:54'), +(5, '15:00', '15:00 BST', '5 years', '2003-10-19 10:23:54+01', '2003-10-19 10:23:54'), +(6, '15:00', '15:00 BST', '5 years', '2004-10-19 10:23:54+01', '2004-10-19 10:23:54'), +(7, '17:00', '17:00 BST', '7 years', '2005-10-19 10:23:54+01', '2005-10-19 10:23:54'), +(8, '18:00', '18:00 BST', '8 years', '2006-10-19 10:23:54+01', '2006-10-19 10:23:54'), +(9, '19:00', '19:00 BST', '9 years', '2007-10-19 10:23:54+01', '2007-10-19 10:23:54'), +(10, '20:00', '20:00 BST', '10 years', '2008-10-19 10:23:54+01', '2008-10-19 10:23:54'); + +select id, f_time, first_value(id) over w, last_value(id) over w +from datetimes +window w as (order by f_time range between + '70 min'::interval preceding and '2 hours'::interval following); + +select id, f_time, first_value(id) over w, last_value(id) over w +from datetimes +window w as (order by f_time desc range between + '70 min' preceding and '2 hours' following); + +select id, f_timetz, first_value(id) over w, last_value(id) over w +from datetimes +window w as (order by f_timetz range between + '70 min'::interval preceding and '2 hours'::interval following); + +select id, f_timetz, first_value(id) over w, last_value(id) over w +from datetimes +window w as (order by f_timetz desc range between + '70 min' preceding and '2 hours' following); + +select id, f_interval, first_value(id) over w, last_value(id) over w +from datetimes +window w as (order by f_interval range between + '1 year'::interval preceding and '1 year'::interval following); + +select id, f_interval, first_value(id) over w, last_value(id) over w +from datetimes +window w as (order by f_interval desc range between + '1 year' preceding and '1 year' following); + +select id, f_timestamptz, first_value(id) over w, last_value(id) over w +from datetimes +window w as (order by f_timestamptz range between + '1 year'::interval preceding and '1 year'::interval following); + +select id, f_timestamptz, first_value(id) over w, last_value(id) over w +from datetimes +window w as (order by f_timestamptz desc range between + '1 year' preceding and '1 year' following); + +select id, f_timestamp, first_value(id) over w, last_value(id) over w +from datetimes +window w as (order by f_timestamp range between + '1 year'::interval preceding and '1 year'::interval following); + +select id, f_timestamp, first_value(id) over w, last_value(id) over w +from datetimes +window w as (order by f_timestamp desc range between + '1 year' preceding and '1 year' following); + +-- RANGE offset PRECEDING/FOLLOWING error cases +select sum(salary) over (order by enroll_date, salary range between '1 year'::interval preceding and '2 years'::interval following + exclude ties), salary, enroll_date from empsalary; + +select sum(salary) over (range between '1 year'::interval preceding and '2 years'::interval following + exclude ties), salary, enroll_date from empsalary; + +select sum(salary) over (order by depname range between '1 year'::interval preceding and '2 years'::interval following + exclude ties), salary, enroll_date from empsalary; + +select max(enroll_date) over (order by enroll_date range between 1 preceding and 2 following + exclude ties), salary, enroll_date from empsalary; + +select max(enroll_date) over (order by salary range between -1 preceding and 2 following + exclude ties), salary, enroll_date from empsalary; + +select max(enroll_date) over (order by salary range between 1 preceding and -2 following + exclude ties), salary, enroll_date from empsalary; + +select max(enroll_date) over (order by salary range between '1 year'::interval preceding and '2 years'::interval following + exclude ties), salary, enroll_date from empsalary; + +select max(enroll_date) over (order by enroll_date range between '1 year'::interval preceding and '-2 years'::interval following + exclude ties), salary, enroll_date from empsalary; + +-- GROUPS tests + +SELECT sum(unique1) over (order by four groups between unbounded preceding and current row), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four groups between unbounded preceding and unbounded following), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four groups between current row and unbounded following), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four groups between 1 preceding and unbounded following), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four groups between 1 following and unbounded following), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four groups between unbounded preceding and 2 following), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four groups between 2 preceding and 1 preceding), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four groups between 2 preceding and 1 following), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four groups between 0 preceding and 0 following), + unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four groups between 2 preceding and 1 following + exclude current row), unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four groups between 2 preceding and 1 following + exclude group), unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (order by four groups between 2 preceding and 1 following + exclude ties), unique1, four +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (partition by ten + order by four groups between 0 preceding and 0 following),unique1, four, ten +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (partition by ten + order by four groups between 0 preceding and 0 following exclude current row), unique1, four, ten +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (partition by ten + order by four groups between 0 preceding and 0 following exclude group), unique1, four, ten +FROM tenk1 WHERE unique1 < 10; + +SELECT sum(unique1) over (partition by ten + order by four groups between 0 preceding and 0 following exclude ties), unique1, four, ten +FROM tenk1 WHERE unique1 < 10; + +select first_value(salary) over(order by enroll_date groups between 1 preceding and 1 following), + lead(salary) over(order by enroll_date groups between 1 preceding and 1 following), + nth_value(salary, 1) over(order by enroll_date groups between 1 preceding and 1 following), + salary, enroll_date from empsalary; + +select last_value(salary) over(order by enroll_date groups between 1 preceding and 1 following), + lag(salary) over(order by enroll_date groups between 1 preceding and 1 following), + salary, enroll_date from empsalary; + +select first_value(salary) over(order by enroll_date groups between 1 following and 3 following + exclude current row), + lead(salary) over(order by enroll_date groups between 1 following and 3 following exclude ties), + nth_value(salary, 1) over(order by enroll_date groups between 1 following and 3 following + exclude ties), + salary, enroll_date from empsalary; + +select last_value(salary) over(order by enroll_date groups between 1 following and 3 following + exclude group), + lag(salary) over(order by enroll_date groups between 1 following and 3 following exclude group), + salary, enroll_date from empsalary; + +-- Show differences in offset interpretation between ROWS, RANGE, and GROUPS +WITH cte (x) AS ( + SELECT * FROM generate_series(1, 35, 2) +) +SELECT x, (sum(x) over w) +FROM cte +WINDOW w AS (ORDER BY x rows between 1 preceding and 1 following); + +WITH cte (x) AS ( + SELECT * FROM generate_series(1, 35, 2) +) +SELECT x, (sum(x) over w) +FROM cte +WINDOW w AS (ORDER BY x range between 1 preceding and 1 following); + +WITH cte (x) AS ( + SELECT * FROM generate_series(1, 35, 2) +) +SELECT x, (sum(x) over w) +FROM cte +WINDOW w AS (ORDER BY x groups between 1 preceding and 1 following); + +WITH cte (x) AS ( + select 1 union all select 1 union all select 1 union all + SELECT * FROM generate_series(5, 49, 2) +) +SELECT x, (sum(x) over w) +FROM cte +WINDOW w AS (ORDER BY x rows between 1 preceding and 1 following); + +WITH cte (x) AS ( + select 1 union all select 1 union all select 1 union all + SELECT * FROM generate_series(5, 49, 2) +) +SELECT x, (sum(x) over w) +FROM cte +WINDOW w AS (ORDER BY x range between 1 preceding and 1 following); + +WITH cte (x) AS ( + select 1 union all select 1 union all select 1 union all + SELECT * FROM generate_series(5, 49, 2) +) +SELECT x, (sum(x) over w) +FROM cte +WINDOW w AS (ORDER BY x groups between 1 preceding and 1 following); + +-- with UNION +SELECT count(*) OVER (PARTITION BY four) FROM (SELECT * FROM tenk1 UNION ALL SELECT * FROM tenk2)s LIMIT 0; + +-- check some degenerate cases +create temp table t1 (f1 int, f2 int8); +insert into t1 values (1,1),(1,2),(2,2); + +select f1, sum(f1) over (partition by f1 + range between 1 preceding and 1 following) +from t1 where f1 = f2; -- error, must have order by +explain (costs off) +select f1, sum(f1) over (partition by f1 order by f2 + range between 1 preceding and 1 following) +from t1 where f1 = f2; +select f1, sum(f1) over (partition by f1 order by f2 + range between 1 preceding and 1 following) +from t1 where f1 = f2; +select f1, sum(f1) over (partition by f1, f1 order by f2 + range between 2 preceding and 1 preceding) +from t1 where f1 = f2; +select f1, sum(f1) over (partition by f1, f2 order by f2 + range between 1 following and 2 following) +from t1 where f1 = f2; + +select f1, sum(f1) over (partition by f1 + groups between 1 preceding and 1 following) +from t1 where f1 = f2; -- error, must have order by +explain (costs off) +select f1, sum(f1) over (partition by f1 order by f2 + groups between 1 preceding and 1 following) +from t1 where f1 = f2; +select f1, sum(f1) over (partition by f1 order by f2 + groups between 1 preceding and 1 following) +from t1 where f1 = f2; +select f1, sum(f1) over (partition by f1, f1 order by f2 + groups between 2 preceding and 1 preceding) +from t1 where f1 = f2; +select f1, sum(f1) over (partition by f1, f2 order by f2 + groups between 1 following and 2 following) +from t1 where f1 = f2; + +-- ordering by a non-integer constant is allowed +SELECT rank() OVER (ORDER BY length('abc')); + +-- can't order by another window function +SELECT rank() OVER (ORDER BY rank() OVER (ORDER BY random())); + +-- some other errors +SELECT * FROM empsalary WHERE row_number() OVER (ORDER BY salary) < 10; + +SELECT * FROM empsalary INNER JOIN tenk1 ON row_number() OVER (ORDER BY salary) < 10; + +SELECT rank() OVER (ORDER BY 1), count(*) FROM empsalary GROUP BY 1; + +SELECT * FROM rank() OVER (ORDER BY random()); + +DELETE FROM empsalary WHERE (rank() OVER (ORDER BY random())) > 10; + +DELETE FROM empsalary RETURNING rank() OVER (ORDER BY random()); + +SELECT count(*) OVER w FROM tenk1 WINDOW w AS (ORDER BY unique1), w AS (ORDER BY unique1); + +SELECT rank() OVER (PARTITION BY four, ORDER BY ten) FROM tenk1; + +SELECT count() OVER () FROM tenk1; + +SELECT generate_series(1, 100) OVER () FROM empsalary; + +SELECT ntile(0) OVER (ORDER BY ten), ten, four FROM tenk1; + +SELECT nth_value(four, 0) OVER (ORDER BY ten), ten, four FROM tenk1; + +-- filter + +SELECT sum(salary), row_number() OVER (ORDER BY depname), sum( + sum(salary) FILTER (WHERE enroll_date > '2007-01-01') +) FILTER (WHERE depname <> 'sales') OVER (ORDER BY depname DESC) AS "filtered_sum", + depname +FROM empsalary GROUP BY depname; + +-- +-- Test SupportRequestOptimizeWindowClause's ability to de-duplicate +-- WindowClauses +-- + +-- Ensure WindowClause frameOptions are changed so that only a single +-- WindowAgg exists in the plan. +EXPLAIN (COSTS OFF) +SELECT + empno, + depname, + row_number() OVER (PARTITION BY depname ORDER BY enroll_date) rn, + rank() OVER (PARTITION BY depname ORDER BY enroll_date ROWS BETWEEN + UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) rnk, + dense_rank() OVER (PARTITION BY depname ORDER BY enroll_date RANGE BETWEEN + CURRENT ROW AND CURRENT ROW) drnk, + ntile(10) OVER (PARTITION BY depname ORDER BY enroll_date RANGE BETWEEN + CURRENT ROW AND UNBOUNDED FOLLOWING) nt, + percent_rank() OVER (PARTITION BY depname ORDER BY enroll_date ROWS BETWEEN + CURRENT ROW AND UNBOUNDED FOLLOWING) pr, + cume_dist() OVER (PARTITION BY depname ORDER BY enroll_date RANGE BETWEEN + CURRENT ROW AND UNBOUNDED FOLLOWING) cd +FROM empsalary; + +-- Ensure WindowFuncs which cannot support their WindowClause's frameOptions +-- being changed are untouched +EXPLAIN (COSTS OFF, VERBOSE) +SELECT + empno, + depname, + row_number() OVER (PARTITION BY depname ORDER BY enroll_date) rn, + rank() OVER (PARTITION BY depname ORDER BY enroll_date ROWS BETWEEN + UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) rnk, + count(*) OVER (PARTITION BY depname ORDER BY enroll_date RANGE BETWEEN + CURRENT ROW AND CURRENT ROW) cnt +FROM empsalary; + +-- Ensure the above query gives us the expected results +SELECT + empno, + depname, + row_number() OVER (PARTITION BY depname ORDER BY enroll_date) rn, + rank() OVER (PARTITION BY depname ORDER BY enroll_date ROWS BETWEEN + UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) rnk, + count(*) OVER (PARTITION BY depname ORDER BY enroll_date RANGE BETWEEN + CURRENT ROW AND CURRENT ROW) cnt +FROM empsalary; + +-- Test pushdown of quals into a subquery containing window functions + +-- pushdown is safe because all PARTITION BY clauses include depname: +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT depname, + sum(salary) OVER (PARTITION BY depname) depsalary, + min(salary) OVER (PARTITION BY depname || 'A', depname) depminsalary + FROM empsalary) emp +WHERE depname = 'sales'; + +-- pushdown is unsafe because there's a PARTITION BY clause without depname: +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT depname, + sum(salary) OVER (PARTITION BY enroll_date) enroll_salary, + min(salary) OVER (PARTITION BY depname) depminsalary + FROM empsalary) emp +WHERE depname = 'sales'; + +-- Test window function run conditions are properly pushed down into the +-- WindowAgg +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT empno, + row_number() OVER (ORDER BY empno) rn + FROM empsalary) emp +WHERE rn < 3; + +-- The following 3 statements should result the same result. +SELECT * FROM + (SELECT empno, + row_number() OVER (ORDER BY empno) rn + FROM empsalary) emp +WHERE rn < 3; + +SELECT * FROM + (SELECT empno, + row_number() OVER (ORDER BY empno) rn + FROM empsalary) emp +WHERE 3 > rn; + +SELECT * FROM + (SELECT empno, + row_number() OVER (ORDER BY empno) rn + FROM empsalary) emp +WHERE 2 >= rn; + +-- Ensure r <= 3 is pushed down into the run condition of the window agg +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT empno, + salary, + rank() OVER (ORDER BY salary DESC) r + FROM empsalary) emp +WHERE r <= 3; + +SELECT * FROM + (SELECT empno, + salary, + rank() OVER (ORDER BY salary DESC) r + FROM empsalary) emp +WHERE r <= 3; + +-- Ensure dr = 1 is converted to dr <= 1 to get all rows leading up to dr = 1 +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT empno, + salary, + dense_rank() OVER (ORDER BY salary DESC) dr + FROM empsalary) emp +WHERE dr = 1; + +SELECT * FROM + (SELECT empno, + salary, + dense_rank() OVER (ORDER BY salary DESC) dr + FROM empsalary) emp +WHERE dr = 1; + +-- Check COUNT() and COUNT(*) +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT empno, + salary, + count(*) OVER (ORDER BY salary DESC) c + FROM empsalary) emp +WHERE c <= 3; + +SELECT * FROM + (SELECT empno, + salary, + count(*) OVER (ORDER BY salary DESC) c + FROM empsalary) emp +WHERE c <= 3; + +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT empno, + salary, + count(empno) OVER (ORDER BY salary DESC) c + FROM empsalary) emp +WHERE c <= 3; + +SELECT * FROM + (SELECT empno, + salary, + count(empno) OVER (ORDER BY salary DESC) c + FROM empsalary) emp +WHERE c <= 3; + +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT empno, + salary, + count(*) OVER (ORDER BY salary DESC ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) c + FROM empsalary) emp +WHERE c >= 3; + +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT empno, + salary, + count(*) OVER () c + FROM empsalary) emp +WHERE 11 <= c; + +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT empno, + salary, + count(*) OVER (ORDER BY salary DESC) c, + dense_rank() OVER (ORDER BY salary DESC) dr + FROM empsalary) emp +WHERE dr = 1; + +-- Ensure we get a run condition when there's a PARTITION BY clause +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT empno, + depname, + row_number() OVER (PARTITION BY depname ORDER BY empno) rn + FROM empsalary) emp +WHERE rn < 3; + +-- and ensure we get the correct results from the above plan +SELECT * FROM + (SELECT empno, + depname, + row_number() OVER (PARTITION BY depname ORDER BY empno) rn + FROM empsalary) emp +WHERE rn < 3; + +-- ensure that "unused" subquery columns are not removed when the column only +-- exists in the run condition +EXPLAIN (COSTS OFF) +SELECT empno, depname FROM + (SELECT empno, + depname, + row_number() OVER (PARTITION BY depname ORDER BY empno) rn + FROM empsalary) emp +WHERE rn < 3; + +-- likewise with count(empno) instead of row_number() +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT empno, + depname, + salary, + count(empno) OVER (PARTITION BY depname ORDER BY salary DESC) c + FROM empsalary) emp +WHERE c <= 3; + +-- and again, check the results are what we expect. +SELECT * FROM + (SELECT empno, + depname, + salary, + count(empno) OVER (PARTITION BY depname ORDER BY salary DESC) c + FROM empsalary) emp +WHERE c <= 3; + +-- Ensure we get the correct run condition when the window function is both +-- monotonically increasing and decreasing. +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT empno, + depname, + salary, + count(empno) OVER () c + FROM empsalary) emp +WHERE c = 1; + +-- Some more complex cases with multiple window clauses +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT *, + count(salary) OVER (PARTITION BY depname || '') c1, -- w1 + row_number() OVER (PARTITION BY depname) rn, -- w2 + count(*) OVER (PARTITION BY depname) c2, -- w2 + count(*) OVER (PARTITION BY '' || depname) c3, -- w3 + ntile(2) OVER (PARTITION BY depname) nt -- w2 + FROM empsalary +) e WHERE rn <= 1 AND c1 <= 3 AND nt < 2; + +-- Ensure we correctly filter out all of the run conditions from each window +SELECT * FROM + (SELECT *, + count(salary) OVER (PARTITION BY depname || '') c1, -- w1 + row_number() OVER (PARTITION BY depname) rn, -- w2 + count(*) OVER (PARTITION BY depname) c2, -- w2 + count(*) OVER (PARTITION BY '' || depname) c3, -- w3 + ntile(2) OVER (PARTITION BY depname) nt -- w2 + FROM empsalary +) e WHERE rn <= 1 AND c1 <= 3 AND nt < 2; + +-- Ensure we remove references to reduced outer joins as nulling rels in run +-- conditions +EXPLAIN (COSTS OFF) +SELECT 1 FROM + (SELECT ntile(e2.salary) OVER (PARTITION BY e1.depname) AS c + FROM empsalary e1 LEFT JOIN empsalary e2 ON TRUE + WHERE e1.empno = e2.empno) s +WHERE s.c = 1; + +-- Tests to ensure we don't push down the run condition when it's not valid to +-- do so. + +-- Ensure we don't push down when the frame options show that the window +-- function is not monotonically increasing +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT empno, + salary, + count(*) OVER (ORDER BY salary DESC ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) c + FROM empsalary) emp +WHERE c <= 3; + +-- Ensure we don't push down when the window function's monotonic properties +-- don't match that of the clauses. +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT empno, + salary, + count(*) OVER (ORDER BY salary) c + FROM empsalary) emp +WHERE 3 <= c; + +-- Ensure we don't use a run condition when there's a volatile function in the +-- WindowFunc +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT empno, + salary, + count(random()) OVER (ORDER BY empno DESC) c + FROM empsalary) emp +WHERE c = 1; + +-- Ensure we don't use a run condition when the WindowFunc contains subplans +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT empno, + salary, + count((SELECT 1)) OVER (ORDER BY empno DESC) c + FROM empsalary) emp +WHERE c = 1; + +-- Test Sort node collapsing +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT depname, + sum(salary) OVER (PARTITION BY depname order by empno) depsalary, + min(salary) OVER (PARTITION BY depname, empno order by enroll_date) depminsalary + FROM empsalary) emp +WHERE depname = 'sales'; + +-- Ensure that the evaluation order of the WindowAggs results in the WindowAgg +-- with the same sort order that's required by the ORDER BY is evaluated last. +EXPLAIN (COSTS OFF) +SELECT empno, + enroll_date, + depname, + sum(salary) OVER (PARTITION BY depname order by empno) depsalary, + min(salary) OVER (PARTITION BY depname order by enroll_date) depminsalary +FROM empsalary +ORDER BY depname, empno; + +-- As above, but with an adjusted ORDER BY to ensure the above plan didn't +-- perform only 2 sorts by accident. +EXPLAIN (COSTS OFF) +SELECT empno, + enroll_date, + depname, + sum(salary) OVER (PARTITION BY depname order by empno) depsalary, + min(salary) OVER (PARTITION BY depname order by enroll_date) depminsalary +FROM empsalary +ORDER BY depname, enroll_date; + +SET enable_hashagg TO off; + +-- Ensure we don't get a sort for both DISTINCT and ORDER BY. We expect the +-- sort for the DISTINCT to provide presorted input for the ORDER BY. +EXPLAIN (COSTS OFF) +SELECT DISTINCT + empno, + enroll_date, + depname, + sum(salary) OVER (PARTITION BY depname order by empno) depsalary, + min(salary) OVER (PARTITION BY depname order by enroll_date) depminsalary +FROM empsalary +ORDER BY depname, enroll_date; + +-- As above but adjust the ORDER BY clause to help ensure the plan with the +-- minimum amount of sorting wasn't a fluke. +EXPLAIN (COSTS OFF) +SELECT DISTINCT + empno, + enroll_date, + depname, + sum(salary) OVER (PARTITION BY depname order by empno) depsalary, + min(salary) OVER (PARTITION BY depname order by enroll_date) depminsalary +FROM empsalary +ORDER BY depname, empno; + +RESET enable_hashagg; + +-- Test Sort node reordering +EXPLAIN (COSTS OFF) +SELECT + lead(1) OVER (PARTITION BY depname ORDER BY salary, enroll_date), + lag(1) OVER (PARTITION BY depname ORDER BY salary,enroll_date,empno) +FROM empsalary; + +-- Test incremental sorting +EXPLAIN (COSTS OFF) +SELECT * FROM + (SELECT depname, + empno, + salary, + enroll_date, + row_number() OVER (PARTITION BY depname ORDER BY enroll_date) AS first_emp, + row_number() OVER (PARTITION BY depname ORDER BY enroll_date DESC) AS last_emp + FROM empsalary) emp +WHERE first_emp = 1 OR last_emp = 1; + +SELECT * FROM + (SELECT depname, + empno, + salary, + enroll_date, + row_number() OVER (PARTITION BY depname ORDER BY enroll_date) AS first_emp, + row_number() OVER (PARTITION BY depname ORDER BY enroll_date DESC) AS last_emp + FROM empsalary) emp +WHERE first_emp = 1 OR last_emp = 1; + +-- cleanup +DROP TABLE empsalary; + +-- test user-defined window function with named args and default args +CREATE FUNCTION nth_value_def(val anyelement, n integer = 1) RETURNS anyelement + LANGUAGE internal WINDOW IMMUTABLE STRICT AS 'window_nth_value'; + +SELECT nth_value_def(n := 2, val := ten) OVER (PARTITION BY four), ten, four + FROM (SELECT * FROM tenk1 WHERE unique2 < 10 ORDER BY four, ten) s; + +SELECT nth_value_def(ten) OVER (PARTITION BY four), ten, four + FROM (SELECT * FROM tenk1 WHERE unique2 < 10 ORDER BY four, ten) s; + +-- +-- Test the basic moving-aggregate machinery +-- + +-- create aggregates that record the series of transform calls (these are +-- intentionally not true inverses) + +CREATE FUNCTION logging_sfunc_nonstrict(text, anyelement) RETURNS text AS +$$ SELECT COALESCE($1, '') || '*' || quote_nullable($2) $$ +LANGUAGE SQL IMMUTABLE; + +CREATE FUNCTION logging_msfunc_nonstrict(text, anyelement) RETURNS text AS +$$ SELECT COALESCE($1, '') || '+' || quote_nullable($2) $$ +LANGUAGE SQL IMMUTABLE; + +CREATE FUNCTION logging_minvfunc_nonstrict(text, anyelement) RETURNS text AS +$$ SELECT $1 || '-' || quote_nullable($2) $$ +LANGUAGE SQL IMMUTABLE; + +CREATE AGGREGATE logging_agg_nonstrict (anyelement) +( + stype = text, + sfunc = logging_sfunc_nonstrict, + mstype = text, + msfunc = logging_msfunc_nonstrict, + minvfunc = logging_minvfunc_nonstrict +); + +CREATE AGGREGATE logging_agg_nonstrict_initcond (anyelement) +( + stype = text, + sfunc = logging_sfunc_nonstrict, + mstype = text, + msfunc = logging_msfunc_nonstrict, + minvfunc = logging_minvfunc_nonstrict, + initcond = 'I', + minitcond = 'MI' +); + +CREATE FUNCTION logging_sfunc_strict(text, anyelement) RETURNS text AS +$$ SELECT $1 || '*' || quote_nullable($2) $$ +LANGUAGE SQL STRICT IMMUTABLE; + +CREATE FUNCTION logging_msfunc_strict(text, anyelement) RETURNS text AS +$$ SELECT $1 || '+' || quote_nullable($2) $$ +LANGUAGE SQL STRICT IMMUTABLE; + +CREATE FUNCTION logging_minvfunc_strict(text, anyelement) RETURNS text AS +$$ SELECT $1 || '-' || quote_nullable($2) $$ +LANGUAGE SQL STRICT IMMUTABLE; + +CREATE AGGREGATE logging_agg_strict (text) +( + stype = text, + sfunc = logging_sfunc_strict, + mstype = text, + msfunc = logging_msfunc_strict, + minvfunc = logging_minvfunc_strict +); + +CREATE AGGREGATE logging_agg_strict_initcond (anyelement) +( + stype = text, + sfunc = logging_sfunc_strict, + mstype = text, + msfunc = logging_msfunc_strict, + minvfunc = logging_minvfunc_strict, + initcond = 'I', + minitcond = 'MI' +); + +-- test strict and non-strict cases +SELECT + p::text || ',' || i::text || ':' || COALESCE(v::text, 'NULL') AS row, + logging_agg_nonstrict(v) over wnd as nstrict, + logging_agg_nonstrict_initcond(v) over wnd as nstrict_init, + logging_agg_strict(v::text) over wnd as strict, + logging_agg_strict_initcond(v) over wnd as strict_init +FROM (VALUES + (1, 1, NULL), + (1, 2, 'a'), + (1, 3, 'b'), + (1, 4, NULL), + (1, 5, NULL), + (1, 6, 'c'), + (2, 1, NULL), + (2, 2, 'x'), + (3, 1, 'z') +) AS t(p, i, v) +WINDOW wnd AS (PARTITION BY P ORDER BY i ROWS BETWEEN 1 PRECEDING AND CURRENT ROW) +ORDER BY p, i; + +-- and again, but with filter +SELECT + p::text || ',' || i::text || ':' || + CASE WHEN f THEN COALESCE(v::text, 'NULL') ELSE '-' END as row, + logging_agg_nonstrict(v) filter(where f) over wnd as nstrict_filt, + logging_agg_nonstrict_initcond(v) filter(where f) over wnd as nstrict_init_filt, + logging_agg_strict(v::text) filter(where f) over wnd as strict_filt, + logging_agg_strict_initcond(v) filter(where f) over wnd as strict_init_filt +FROM (VALUES + (1, 1, true, NULL), + (1, 2, false, 'a'), + (1, 3, true, 'b'), + (1, 4, false, NULL), + (1, 5, false, NULL), + (1, 6, false, 'c'), + (2, 1, false, NULL), + (2, 2, true, 'x'), + (3, 1, true, 'z') +) AS t(p, i, f, v) +WINDOW wnd AS (PARTITION BY p ORDER BY i ROWS BETWEEN 1 PRECEDING AND CURRENT ROW) +ORDER BY p, i; + +-- test that volatile arguments disable moving-aggregate mode +SELECT + i::text || ':' || COALESCE(v::text, 'NULL') as row, + logging_agg_strict(v::text) + over wnd as inverse, + logging_agg_strict(v::text || CASE WHEN random() < 0 then '?' ELSE '' END) + over wnd as noinverse +FROM (VALUES + (1, 'a'), + (2, 'b'), + (3, 'c') +) AS t(i, v) +WINDOW wnd AS (ORDER BY i ROWS BETWEEN 1 PRECEDING AND CURRENT ROW) +ORDER BY i; + +SELECT + i::text || ':' || COALESCE(v::text, 'NULL') as row, + logging_agg_strict(v::text) filter(where true) + over wnd as inverse, + logging_agg_strict(v::text) filter(where random() >= 0) + over wnd as noinverse +FROM (VALUES + (1, 'a'), + (2, 'b'), + (3, 'c') +) AS t(i, v) +WINDOW wnd AS (ORDER BY i ROWS BETWEEN 1 PRECEDING AND CURRENT ROW) +ORDER BY i; + +-- test that non-overlapping windows don't use inverse transitions +SELECT + logging_agg_strict(v::text) OVER wnd +FROM (VALUES + (1, 'a'), + (2, 'b'), + (3, 'c') +) AS t(i, v) +WINDOW wnd AS (ORDER BY i ROWS BETWEEN CURRENT ROW AND CURRENT ROW) +ORDER BY i; + +-- test that returning NULL from the inverse transition functions +-- restarts the aggregation from scratch. The second aggregate is supposed +-- to test cases where only some aggregates restart, the third one checks +-- that one aggregate restarting doesn't cause others to restart. + +CREATE FUNCTION sum_int_randrestart_minvfunc(int4, int4) RETURNS int4 AS +$$ SELECT CASE WHEN random() < 0.2 THEN NULL ELSE $1 - $2 END $$ +LANGUAGE SQL STRICT; + +CREATE AGGREGATE sum_int_randomrestart (int4) +( + stype = int4, + sfunc = int4pl, + mstype = int4, + msfunc = int4pl, + minvfunc = sum_int_randrestart_minvfunc +); + +WITH +vs AS ( + SELECT i, (random() * 100)::int4 AS v + FROM generate_series(1, 100) AS i +), +sum_following AS ( + SELECT i, SUM(v) OVER + (ORDER BY i DESC ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS s + FROM vs +) +SELECT DISTINCT + sum_following.s = sum_int_randomrestart(v) OVER fwd AS eq1, + -sum_following.s = sum_int_randomrestart(-v) OVER fwd AS eq2, + 100*3+(vs.i-1)*3 = length(logging_agg_nonstrict(''::text) OVER fwd) AS eq3 +FROM vs +JOIN sum_following ON sum_following.i = vs.i +WINDOW fwd AS ( + ORDER BY vs.i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING +); + +-- +-- Test various built-in aggregates that have moving-aggregate support +-- + +-- test inverse transition functions handle NULLs properly +SELECT i,AVG(v::bigint) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,1),(2,2),(3,NULL),(4,NULL)) t(i,v); + +SELECT i,AVG(v::int) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,1),(2,2),(3,NULL),(4,NULL)) t(i,v); + +SELECT i,AVG(v::smallint) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,1),(2,2),(3,NULL),(4,NULL)) t(i,v); + +SELECT i,AVG(v::numeric) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,1.5),(2,2.5),(3,NULL),(4,NULL)) t(i,v); + +SELECT i,AVG(v::interval) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,'1 sec'),(2,'2 sec'),(3,NULL),(4,NULL)) t(i,v); + +SELECT i,SUM(v::smallint) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,1),(2,2),(3,NULL),(4,NULL)) t(i,v); + +SELECT i,SUM(v::int) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,1),(2,2),(3,NULL),(4,NULL)) t(i,v); + +SELECT i,SUM(v::bigint) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,1),(2,2),(3,NULL),(4,NULL)) t(i,v); + +SELECT i,SUM(v::money) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,'1.10'),(2,'2.20'),(3,NULL),(4,NULL)) t(i,v); + +SELECT i,SUM(v::interval) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,'1 sec'),(2,'2 sec'),(3,NULL),(4,NULL)) t(i,v); + +SELECT i,SUM(v::numeric) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,1.1),(2,2.2),(3,NULL),(4,NULL)) t(i,v); + +SELECT SUM(n::numeric) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,1.01),(2,2),(3,3)) v(i,n); + +SELECT i,COUNT(v) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,1),(2,2),(3,NULL),(4,NULL)) t(i,v); + +SELECT i,COUNT(*) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,1),(2,2),(3,NULL),(4,NULL)) t(i,v); + +SELECT VAR_POP(n::bigint) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,600),(2,470),(3,170),(4,430),(5,300)) r(i,n); + +SELECT VAR_POP(n::int) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,600),(2,470),(3,170),(4,430),(5,300)) r(i,n); + +SELECT VAR_POP(n::smallint) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,600),(2,470),(3,170),(4,430),(5,300)) r(i,n); + +SELECT VAR_POP(n::numeric) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,600),(2,470),(3,170),(4,430),(5,300)) r(i,n); + +SELECT VAR_SAMP(n::bigint) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,600),(2,470),(3,170),(4,430),(5,300)) r(i,n); + +SELECT VAR_SAMP(n::int) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,600),(2,470),(3,170),(4,430),(5,300)) r(i,n); + +SELECT VAR_SAMP(n::smallint) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,600),(2,470),(3,170),(4,430),(5,300)) r(i,n); + +SELECT VAR_SAMP(n::numeric) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,600),(2,470),(3,170),(4,430),(5,300)) r(i,n); + +SELECT VARIANCE(n::bigint) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,600),(2,470),(3,170),(4,430),(5,300)) r(i,n); + +SELECT VARIANCE(n::int) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,600),(2,470),(3,170),(4,430),(5,300)) r(i,n); + +SELECT VARIANCE(n::smallint) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,600),(2,470),(3,170),(4,430),(5,300)) r(i,n); + +SELECT VARIANCE(n::numeric) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,600),(2,470),(3,170),(4,430),(5,300)) r(i,n); + +SELECT STDDEV_POP(n::bigint) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,NULL),(2,600),(3,470),(4,170),(5,430),(6,300)) r(i,n); + +SELECT STDDEV_POP(n::int) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,NULL),(2,600),(3,470),(4,170),(5,430),(6,300)) r(i,n); + +SELECT STDDEV_POP(n::smallint) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,NULL),(2,600),(3,470),(4,170),(5,430),(6,300)) r(i,n); + +SELECT STDDEV_POP(n::numeric) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,NULL),(2,600),(3,470),(4,170),(5,430),(6,300)) r(i,n); + +SELECT STDDEV_SAMP(n::bigint) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,NULL),(2,600),(3,470),(4,170),(5,430),(6,300)) r(i,n); + +SELECT STDDEV_SAMP(n::int) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,NULL),(2,600),(3,470),(4,170),(5,430),(6,300)) r(i,n); + +SELECT STDDEV_SAMP(n::smallint) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,NULL),(2,600),(3,470),(4,170),(5,430),(6,300)) r(i,n); + +SELECT STDDEV_SAMP(n::numeric) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(1,NULL),(2,600),(3,470),(4,170),(5,430),(6,300)) r(i,n); + +SELECT STDDEV(n::bigint) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(0,NULL),(1,600),(2,470),(3,170),(4,430),(5,300)) r(i,n); + +SELECT STDDEV(n::int) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(0,NULL),(1,600),(2,470),(3,170),(4,430),(5,300)) r(i,n); + +SELECT STDDEV(n::smallint) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(0,NULL),(1,600),(2,470),(3,170),(4,430),(5,300)) r(i,n); + +SELECT STDDEV(n::numeric) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) + FROM (VALUES(0,NULL),(1,600),(2,470),(3,170),(4,430),(5,300)) r(i,n); + +-- test that inverse transition functions work with various frame options +SELECT i,SUM(v::int) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND CURRENT ROW) + FROM (VALUES(1,1),(2,2),(3,NULL),(4,NULL)) t(i,v); + +SELECT i,SUM(v::int) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND 1 FOLLOWING) + FROM (VALUES(1,1),(2,2),(3,NULL),(4,NULL)) t(i,v); + +SELECT i,SUM(v::int) OVER (ORDER BY i ROWS BETWEEN 1 PRECEDING AND 1 FOLLOWING) + FROM (VALUES(1,1),(2,2),(3,3),(4,4)) t(i,v); + +-- ensure aggregate over numeric properly recovers from NaN values +SELECT a, b, + SUM(b) OVER(ORDER BY A ROWS BETWEEN 1 PRECEDING AND CURRENT ROW) +FROM (VALUES(1,1::numeric),(2,2),(3,'NaN'),(4,3),(5,4)) t(a,b); + +-- It might be tempting for someone to add an inverse trans function for +-- float and double precision. This should not be done as it can give incorrect +-- results. This test should fail if anyone ever does this without thinking too +-- hard about it. +SELECT to_char(SUM(n::float8) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND 1 FOLLOWING),'999999999999999999999D9') + FROM (VALUES(1,1e20),(2,1)) n(i,n); + +SELECT i, b, bool_and(b) OVER w, bool_or(b) OVER w + FROM (VALUES (1,true), (2,true), (3,false), (4,false), (5,true)) v(i,b) + WINDOW w AS (ORDER BY i ROWS BETWEEN CURRENT ROW AND 1 FOLLOWING); + +-- Tests for problems with failure to walk or mutate expressions +-- within window frame clauses. + +-- test walker (fails with collation error if expressions are not walked) +SELECT array_agg(i) OVER w + FROM generate_series(1,5) i +WINDOW w AS (ORDER BY i ROWS BETWEEN (('foo' < 'foobar')::integer) PRECEDING AND CURRENT ROW); + +-- test mutator (fails when inlined if expressions are not mutated) +CREATE FUNCTION pg_temp.f(group_size BIGINT) RETURNS SETOF integer[] +AS $$ + SELECT array_agg(s) OVER w + FROM generate_series(1,5) s + WINDOW w AS (ORDER BY s ROWS BETWEEN CURRENT ROW AND GROUP_SIZE FOLLOWING) +$$ LANGUAGE SQL STABLE; + +EXPLAIN (costs off) SELECT * FROM pg_temp.f(2); +SELECT * FROM pg_temp.f(2); |