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Diffstat (limited to 'src/test/regress/sql/groupingsets.sql')
| -rw-r--r-- | src/test/regress/sql/groupingsets.sql | 592 |
1 files changed, 592 insertions, 0 deletions
diff --git a/src/test/regress/sql/groupingsets.sql b/src/test/regress/sql/groupingsets.sql new file mode 100644 index 0000000..90ba272 --- /dev/null +++ b/src/test/regress/sql/groupingsets.sql @@ -0,0 +1,592 @@ +-- +-- grouping sets +-- + +-- test data sources + +create temp view gstest1(a,b,v) + as values (1,1,10),(1,1,11),(1,2,12),(1,2,13),(1,3,14), + (2,3,15), + (3,3,16),(3,4,17), + (4,1,18),(4,1,19); + +create temp table gstest2 (a integer, b integer, c integer, d integer, + e integer, f integer, g integer, h integer); +copy gstest2 from stdin; +1 1 1 1 1 1 1 1 +1 1 1 1 1 1 1 2 +1 1 1 1 1 1 2 2 +1 1 1 1 1 2 2 2 +1 1 1 1 2 2 2 2 +1 1 1 2 2 2 2 2 +1 1 2 2 2 2 2 2 +1 2 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 +\. + +create temp table gstest3 (a integer, b integer, c integer, d integer); +copy gstest3 from stdin; +1 1 1 1 +2 2 2 2 +\. +alter table gstest3 add primary key (a); + +create temp table gstest4(id integer, v integer, + unhashable_col bit(4), unsortable_col xid); +insert into gstest4 +values (1,1,b'0000','1'), (2,2,b'0001','1'), + (3,4,b'0010','2'), (4,8,b'0011','2'), + (5,16,b'0000','2'), (6,32,b'0001','2'), + (7,64,b'0010','1'), (8,128,b'0011','1'); + +create temp table gstest_empty (a integer, b integer, v integer); + +create function gstest_data(v integer, out a integer, out b integer) + returns setof record + as $f$ + begin + return query select v, i from generate_series(1,3) i; + end; + $f$ language plpgsql; + +-- basic functionality + +set enable_hashagg = false; -- test hashing explicitly later + +-- simple rollup with multiple plain aggregates, with and without ordering +-- (and with ordering differing from grouping) + +select a, b, grouping(a,b), sum(v), count(*), max(v) + from gstest1 group by rollup (a,b); +select a, b, grouping(a,b), sum(v), count(*), max(v) + from gstest1 group by rollup (a,b) order by a,b; +select a, b, grouping(a,b), sum(v), count(*), max(v) + from gstest1 group by rollup (a,b) order by b desc, a; +select a, b, grouping(a,b), sum(v), count(*), max(v) + from gstest1 group by rollup (a,b) order by coalesce(a,0)+coalesce(b,0); + +-- various types of ordered aggs +select a, b, grouping(a,b), + array_agg(v order by v), + string_agg(v::text, ':' order by v desc), + percentile_disc(0.5) within group (order by v), + rank(1,2,12) within group (order by a,b,v) + from gstest1 group by rollup (a,b) order by a,b; + +-- test usage of grouped columns in direct args of aggs +select grouping(a), a, array_agg(b), + rank(a) within group (order by b nulls first), + rank(a) within group (order by b nulls last) + from (values (1,1),(1,4),(1,5),(3,1),(3,2)) v(a,b) + group by rollup (a) order by a; + +-- nesting with window functions +select a, b, sum(c), sum(sum(c)) over (order by a,b) as rsum + from gstest2 group by rollup (a,b) order by rsum, a, b; + +-- nesting with grouping sets +select sum(c) from gstest2 + group by grouping sets((), grouping sets((), grouping sets(()))) + order by 1 desc; +select sum(c) from gstest2 + group by grouping sets((), grouping sets((), grouping sets(((a, b))))) + order by 1 desc; +select sum(c) from gstest2 + group by grouping sets(grouping sets(rollup(c), grouping sets(cube(c)))) + order by 1 desc; +select sum(c) from gstest2 + group by grouping sets(a, grouping sets(a, cube(b))) + order by 1 desc; +select sum(c) from gstest2 + group by grouping sets(grouping sets((a, (b)))) + order by 1 desc; +select sum(c) from gstest2 + group by grouping sets(grouping sets((a, b))) + order by 1 desc; +select sum(c) from gstest2 + group by grouping sets(grouping sets(a, grouping sets(a), a)) + order by 1 desc; +select sum(c) from gstest2 + group by grouping sets(grouping sets(a, grouping sets(a, grouping sets(a), ((a)), a, grouping sets(a), (a)), a)) + order by 1 desc; +select sum(c) from gstest2 + group by grouping sets((a,(a,b)), grouping sets((a,(a,b)),a)) + order by 1 desc; + +-- empty input: first is 0 rows, second 1, third 3 etc. +select a, b, sum(v), count(*) from gstest_empty group by grouping sets ((a,b),a); +select a, b, sum(v), count(*) from gstest_empty group by grouping sets ((a,b),()); +select a, b, sum(v), count(*) from gstest_empty group by grouping sets ((a,b),(),(),()); +select sum(v), count(*) from gstest_empty group by grouping sets ((),(),()); + +-- empty input with joins tests some important code paths +select t1.a, t2.b, sum(t1.v), count(*) from gstest_empty t1, gstest_empty t2 + group by grouping sets ((t1.a,t2.b),()); + +-- simple joins, var resolution, GROUPING on join vars +select t1.a, t2.b, grouping(t1.a, t2.b), sum(t1.v), max(t2.a) + from gstest1 t1, gstest2 t2 + group by grouping sets ((t1.a, t2.b), ()); + +select t1.a, t2.b, grouping(t1.a, t2.b), sum(t1.v), max(t2.a) + from gstest1 t1 join gstest2 t2 on (t1.a=t2.a) + group by grouping sets ((t1.a, t2.b), ()); + +select a, b, grouping(a, b), sum(t1.v), max(t2.c) + from gstest1 t1 join gstest2 t2 using (a,b) + group by grouping sets ((a, b), ()); + +-- check that functionally dependent cols are not nulled +select a, d, grouping(a,b,c) + from gstest3 + group by grouping sets ((a,b), (a,c)); + +-- check that distinct grouping columns are kept separate +-- even if they are equal() +explain (costs off) +select g as alias1, g as alias2 + from generate_series(1,3) g + group by alias1, rollup(alias2); + +select g as alias1, g as alias2 + from generate_series(1,3) g + group by alias1, rollup(alias2); + +-- check that pulled-up subquery outputs still go to null when appropriate +select four, x + from (select four, ten, 'foo'::text as x from tenk1) as t + group by grouping sets (four, x) + having x = 'foo'; + +select four, x || 'x' + from (select four, ten, 'foo'::text as x from tenk1) as t + group by grouping sets (four, x) + order by four; + +select (x+y)*1, sum(z) + from (select 1 as x, 2 as y, 3 as z) s + group by grouping sets (x+y, x); + +select x, not x as not_x, q2 from + (select *, q1 = 1 as x from int8_tbl i1) as t + group by grouping sets(x, q2) + order by x, q2; + +-- check qual push-down rules for a subquery with grouping sets +explain (verbose, costs off) +select * from ( + select 1 as x, q1, sum(q2) + from int8_tbl i1 + group by grouping sets(1, 2) +) ss +where x = 1 and q1 = 123; + +select * from ( + select 1 as x, q1, sum(q2) + from int8_tbl i1 + group by grouping sets(1, 2) +) ss +where x = 1 and q1 = 123; + +-- check handling of pulled-up SubPlan in GROUPING() argument (bug #17479) +explain (verbose, costs off) +select grouping(ss.x) +from int8_tbl i1 +cross join lateral (select (select i1.q1) as x) ss +group by ss.x; + +select grouping(ss.x) +from int8_tbl i1 +cross join lateral (select (select i1.q1) as x) ss +group by ss.x; + +explain (verbose, costs off) +select (select grouping(ss.x)) +from int8_tbl i1 +cross join lateral (select (select i1.q1) as x) ss +group by ss.x; + +select (select grouping(ss.x)) +from int8_tbl i1 +cross join lateral (select (select i1.q1) as x) ss +group by ss.x; + +-- simple rescan tests + +select a, b, sum(v.x) + from (values (1),(2)) v(x), gstest_data(v.x) + group by rollup (a,b); + +select * + from (values (1),(2)) v(x), + lateral (select a, b, sum(v.x) from gstest_data(v.x) group by rollup (a,b)) s; + +-- min max optimization should still work with GROUP BY () +explain (costs off) + select min(unique1) from tenk1 GROUP BY (); + +-- Views with GROUPING SET queries +CREATE VIEW gstest_view AS select a, b, grouping(a,b), sum(c), count(*), max(c) + from gstest2 group by rollup ((a,b,c),(c,d)); + +select pg_get_viewdef('gstest_view'::regclass, true); + +-- Nested queries with 3 or more levels of nesting +select(select (select grouping(a,b) from (values (1)) v2(c)) from (values (1,2)) v1(a,b) group by (a,b)) from (values(6,7)) v3(e,f) GROUP BY ROLLUP(e,f); +select(select (select grouping(e,f) from (values (1)) v2(c)) from (values (1,2)) v1(a,b) group by (a,b)) from (values(6,7)) v3(e,f) GROUP BY ROLLUP(e,f); +select(select (select grouping(c) from (values (1)) v2(c) GROUP BY c) from (values (1,2)) v1(a,b) group by (a,b)) from (values(6,7)) v3(e,f) GROUP BY ROLLUP(e,f); + +-- Combinations of operations +select a, b, c, d from gstest2 group by rollup(a,b),grouping sets(c,d); +select a, b from (values (1,2),(2,3)) v(a,b) group by a,b, grouping sets(a); + +-- Tests for chained aggregates +select a, b, grouping(a,b), sum(v), count(*), max(v) + from gstest1 group by grouping sets ((a,b),(a+1,b+1),(a+2,b+2)) order by 3,6; +select(select (select grouping(a,b) from (values (1)) v2(c)) from (values (1,2)) v1(a,b) group by (a,b)) from (values(6,7)) v3(e,f) GROUP BY ROLLUP((e+1),(f+1)); +select(select (select grouping(a,b) from (values (1)) v2(c)) from (values (1,2)) v1(a,b) group by (a,b)) from (values(6,7)) v3(e,f) GROUP BY CUBE((e+1),(f+1)) ORDER BY (e+1),(f+1); +select a, b, sum(c), sum(sum(c)) over (order by a,b) as rsum + from gstest2 group by cube (a,b) order by rsum, a, b; +select a, b, sum(c) from (values (1,1,10),(1,1,11),(1,2,12),(1,2,13),(1,3,14),(2,3,15),(3,3,16),(3,4,17),(4,1,18),(4,1,19)) v(a,b,c) group by rollup (a,b); +select a, b, sum(v.x) + from (values (1),(2)) v(x), gstest_data(v.x) + group by cube (a,b) order by a,b; + +-- Test reordering of grouping sets +explain (costs off) +select * from gstest1 group by grouping sets((a,b,v),(v)) order by v,b,a; + +-- Agg level check. This query should error out. +select (select grouping(a,b) from gstest2) from gstest2 group by a,b; + +--Nested queries +select a, b, sum(c), count(*) from gstest2 group by grouping sets (rollup(a,b),a); + +-- HAVING queries +select ten, sum(distinct four) from onek a +group by grouping sets((ten,four),(ten)) +having exists (select 1 from onek b where sum(distinct a.four) = b.four); + +-- Tests around pushdown of HAVING clauses, partially testing against previous bugs +select a,count(*) from gstest2 group by rollup(a) order by a; +select a,count(*) from gstest2 group by rollup(a) having a is distinct from 1 order by a; +explain (costs off) + select a,count(*) from gstest2 group by rollup(a) having a is distinct from 1 order by a; + +select v.c, (select count(*) from gstest2 group by () having v.c) + from (values (false),(true)) v(c) order by v.c; +explain (costs off) + select v.c, (select count(*) from gstest2 group by () having v.c) + from (values (false),(true)) v(c) order by v.c; + +-- HAVING with GROUPING queries +select ten, grouping(ten) from onek +group by grouping sets(ten) having grouping(ten) >= 0 +order by 2,1; +select ten, grouping(ten) from onek +group by grouping sets(ten, four) having grouping(ten) > 0 +order by 2,1; +select ten, grouping(ten) from onek +group by rollup(ten) having grouping(ten) > 0 +order by 2,1; +select ten, grouping(ten) from onek +group by cube(ten) having grouping(ten) > 0 +order by 2,1; +select ten, grouping(ten) from onek +group by (ten) having grouping(ten) >= 0 +order by 2,1; + +-- FILTER queries +select ten, sum(distinct four) filter (where four::text ~ '123') from onek a +group by rollup(ten); + +-- More rescan tests +select * from (values (1),(2)) v(a) left join lateral (select v.a, four, ten, count(*) from onek group by cube(four,ten)) s on true order by v.a,four,ten; +select array(select row(v.a,s1.*) from (select two,four, count(*) from onek group by cube(two,four) order by two,four) s1) from (values (1),(2)) v(a); + +-- Grouping on text columns +select sum(ten) from onek group by two, rollup(four::text) order by 1; +select sum(ten) from onek group by rollup(four::text), two order by 1; + +-- hashing support + +set enable_hashagg = true; + +-- failure cases + +select count(*) from gstest4 group by rollup(unhashable_col,unsortable_col); +select array_agg(v order by v) from gstest4 group by grouping sets ((id,unsortable_col),(id)); + +-- simple cases + +select a, b, grouping(a,b), sum(v), count(*), max(v) + from gstest1 group by grouping sets ((a),(b)) order by 3,1,2; +explain (costs off) select a, b, grouping(a,b), sum(v), count(*), max(v) + from gstest1 group by grouping sets ((a),(b)) order by 3,1,2; + +select a, b, grouping(a,b), sum(v), count(*), max(v) + from gstest1 group by cube(a,b) order by 3,1,2; +explain (costs off) select a, b, grouping(a,b), sum(v), count(*), max(v) + from gstest1 group by cube(a,b) order by 3,1,2; + +-- shouldn't try and hash +explain (costs off) + select a, b, grouping(a,b), array_agg(v order by v) + from gstest1 group by cube(a,b); + +-- unsortable cases +select unsortable_col, count(*) + from gstest4 group by grouping sets ((unsortable_col),(unsortable_col)) + order by unsortable_col::text; + +-- mixed hashable/sortable cases +select unhashable_col, unsortable_col, + grouping(unhashable_col, unsortable_col), + count(*), sum(v) + from gstest4 group by grouping sets ((unhashable_col),(unsortable_col)) + order by 3, 5; +explain (costs off) + select unhashable_col, unsortable_col, + grouping(unhashable_col, unsortable_col), + count(*), sum(v) + from gstest4 group by grouping sets ((unhashable_col),(unsortable_col)) + order by 3,5; + +select unhashable_col, unsortable_col, + grouping(unhashable_col, unsortable_col), + count(*), sum(v) + from gstest4 group by grouping sets ((v,unhashable_col),(v,unsortable_col)) + order by 3,5; +explain (costs off) + select unhashable_col, unsortable_col, + grouping(unhashable_col, unsortable_col), + count(*), sum(v) + from gstest4 group by grouping sets ((v,unhashable_col),(v,unsortable_col)) + order by 3,5; + +-- empty input: first is 0 rows, second 1, third 3 etc. +select a, b, sum(v), count(*) from gstest_empty group by grouping sets ((a,b),a); +explain (costs off) + select a, b, sum(v), count(*) from gstest_empty group by grouping sets ((a,b),a); +select a, b, sum(v), count(*) from gstest_empty group by grouping sets ((a,b),()); +select a, b, sum(v), count(*) from gstest_empty group by grouping sets ((a,b),(),(),()); +explain (costs off) + select a, b, sum(v), count(*) from gstest_empty group by grouping sets ((a,b),(),(),()); +select sum(v), count(*) from gstest_empty group by grouping sets ((),(),()); +explain (costs off) + select sum(v), count(*) from gstest_empty group by grouping sets ((),(),()); + +-- check that functionally dependent cols are not nulled +select a, d, grouping(a,b,c) + from gstest3 + group by grouping sets ((a,b), (a,c)); +explain (costs off) + select a, d, grouping(a,b,c) + from gstest3 + group by grouping sets ((a,b), (a,c)); + +-- simple rescan tests + +select a, b, sum(v.x) + from (values (1),(2)) v(x), gstest_data(v.x) + group by grouping sets (a,b) + order by 1, 2, 3; +explain (costs off) + select a, b, sum(v.x) + from (values (1),(2)) v(x), gstest_data(v.x) + group by grouping sets (a,b) + order by 3, 1, 2; +select * + from (values (1),(2)) v(x), + lateral (select a, b, sum(v.x) from gstest_data(v.x) group by grouping sets (a,b)) s; +explain (costs off) + select * + from (values (1),(2)) v(x), + lateral (select a, b, sum(v.x) from gstest_data(v.x) group by grouping sets (a,b)) s; + +-- Tests for chained aggregates +select a, b, grouping(a,b), sum(v), count(*), max(v) + from gstest1 group by grouping sets ((a,b),(a+1,b+1),(a+2,b+2)) order by 3,6; +explain (costs off) + select a, b, grouping(a,b), sum(v), count(*), max(v) + from gstest1 group by grouping sets ((a,b),(a+1,b+1),(a+2,b+2)) order by 3,6; +select a, b, sum(c), sum(sum(c)) over (order by a,b) as rsum + from gstest2 group by cube (a,b) order by rsum, a, b; +explain (costs off) + select a, b, sum(c), sum(sum(c)) over (order by a,b) as rsum + from gstest2 group by cube (a,b) order by rsum, a, b; +select a, b, sum(v.x) + from (values (1),(2)) v(x), gstest_data(v.x) + group by cube (a,b) order by a,b; +explain (costs off) + select a, b, sum(v.x) + from (values (1),(2)) v(x), gstest_data(v.x) + group by cube (a,b) order by a,b; + +-- Verify that we correctly handle the child node returning a +-- non-minimal slot, which happens if the input is pre-sorted, +-- e.g. due to an index scan. +BEGIN; +SET LOCAL enable_hashagg = false; +EXPLAIN (COSTS OFF) SELECT a, b, count(*), max(a), max(b) FROM gstest3 GROUP BY GROUPING SETS(a, b,()) ORDER BY a, b; +SELECT a, b, count(*), max(a), max(b) FROM gstest3 GROUP BY GROUPING SETS(a, b,()) ORDER BY a, b; +SET LOCAL enable_seqscan = false; +EXPLAIN (COSTS OFF) SELECT a, b, count(*), max(a), max(b) FROM gstest3 GROUP BY GROUPING SETS(a, b,()) ORDER BY a, b; +SELECT a, b, count(*), max(a), max(b) FROM gstest3 GROUP BY GROUPING SETS(a, b,()) ORDER BY a, b; +COMMIT; + +-- More rescan tests +select * from (values (1),(2)) v(a) left join lateral (select v.a, four, ten, count(*) from onek group by cube(four,ten)) s on true order by v.a,four,ten; +select array(select row(v.a,s1.*) from (select two,four, count(*) from onek group by cube(two,four) order by two,four) s1) from (values (1),(2)) v(a); + +-- Rescan logic changes when there are no empty grouping sets, so test +-- that too: +select * from (values (1),(2)) v(a) left join lateral (select v.a, four, ten, count(*) from onek group by grouping sets(four,ten)) s on true order by v.a,four,ten; +select array(select row(v.a,s1.*) from (select two,four, count(*) from onek group by grouping sets(two,four) order by two,four) s1) from (values (1),(2)) v(a); + +-- test the knapsack + +set enable_indexscan = false; +set hash_mem_multiplier = 1.0; +set work_mem = '64kB'; +explain (costs off) + select unique1, + count(two), count(four), count(ten), + count(hundred), count(thousand), count(twothousand), + count(*) + from tenk1 group by grouping sets (unique1,twothousand,thousand,hundred,ten,four,two); +explain (costs off) + select unique1, + count(two), count(four), count(ten), + count(hundred), count(thousand), count(twothousand), + count(*) + from tenk1 group by grouping sets (unique1,hundred,ten,four,two); + +set work_mem = '384kB'; +explain (costs off) + select unique1, + count(two), count(four), count(ten), + count(hundred), count(thousand), count(twothousand), + count(*) + from tenk1 group by grouping sets (unique1,twothousand,thousand,hundred,ten,four,two); + +-- check collation-sensitive matching between grouping expressions +-- (similar to a check for aggregates, but there are additional code +-- paths for GROUPING, so check again here) + +select v||'a', case grouping(v||'a') when 1 then 1 else 0 end, count(*) + from unnest(array[1,1], array['a','b']) u(i,v) + group by rollup(i, v||'a') order by 1,3; +select v||'a', case when grouping(v||'a') = 1 then 1 else 0 end, count(*) + from unnest(array[1,1], array['a','b']) u(i,v) + group by rollup(i, v||'a') order by 1,3; + +-- Bug #16784 +create table bug_16784(i int, j int); +analyze bug_16784; +alter table bug_16784 set (autovacuum_enabled = 'false'); +update pg_class set reltuples = 10 where relname='bug_16784'; + +insert into bug_16784 select g/10, g from generate_series(1,40) g; + +set work_mem='64kB'; +set enable_sort = false; + +select * from + (values (1),(2)) v(a), + lateral (select a, i, j, count(*) from + bug_16784 group by cube(i,j)) s + order by v.a, i, j; + +-- +-- Compare results between plans using sorting and plans using hash +-- aggregation. Force spilling in both cases by setting work_mem low +-- and altering the statistics. +-- + +create table gs_data_1 as +select g%1000 as g1000, g%100 as g100, g%10 as g10, g + from generate_series(0,1999) g; + +analyze gs_data_1; +alter table gs_data_1 set (autovacuum_enabled = 'false'); +update pg_class set reltuples = 10 where relname='gs_data_1'; + +set work_mem='64kB'; + +-- Produce results with sorting. + +set enable_sort = true; +set enable_hashagg = false; +set jit_above_cost = 0; + +explain (costs off) +select g100, g10, sum(g::numeric), count(*), max(g::text) +from gs_data_1 group by cube (g1000, g100,g10); + +create table gs_group_1 as +select g100, g10, sum(g::numeric), count(*), max(g::text) +from gs_data_1 group by cube (g1000, g100,g10); + +-- Produce results with hash aggregation. + +set enable_hashagg = true; +set enable_sort = false; + +explain (costs off) +select g100, g10, sum(g::numeric), count(*), max(g::text) +from gs_data_1 group by cube (g1000, g100,g10); + +create table gs_hash_1 as +select g100, g10, sum(g::numeric), count(*), max(g::text) +from gs_data_1 group by cube (g1000, g100,g10); + +set enable_sort = true; +set work_mem to default; +set hash_mem_multiplier to default; + +-- Compare results + +(select * from gs_hash_1 except select * from gs_group_1) + union all +(select * from gs_group_1 except select * from gs_hash_1); + +drop table gs_group_1; +drop table gs_hash_1; + +-- GROUP BY DISTINCT + +-- "normal" behavior... +select a, b, c +from (values (1, 2, 3), (4, null, 6), (7, 8, 9)) as t (a, b, c) +group by all rollup(a, b), rollup(a, c) +order by a, b, c; + +-- ...which is also the default +select a, b, c +from (values (1, 2, 3), (4, null, 6), (7, 8, 9)) as t (a, b, c) +group by rollup(a, b), rollup(a, c) +order by a, b, c; + +-- "group by distinct" behavior... +select a, b, c +from (values (1, 2, 3), (4, null, 6), (7, 8, 9)) as t (a, b, c) +group by distinct rollup(a, b), rollup(a, c) +order by a, b, c; + +-- ...which is not the same as "select distinct" +select distinct a, b, c +from (values (1, 2, 3), (4, null, 6), (7, 8, 9)) as t (a, b, c) +group by rollup(a, b), rollup(a, c) +order by a, b, c; + +-- test handling of outer GroupingFunc within subqueries +explain (costs off) +select (select grouping(v1)) from (values ((select 1))) v(v1) group by cube(v1); +select (select grouping(v1)) from (values ((select 1))) v(v1) group by cube(v1); + +explain (costs off) +select (select grouping(v1)) from (values ((select 1))) v(v1) group by v1; +select (select grouping(v1)) from (values ((select 1))) v(v1) group by v1; + +-- end |