diff options
Diffstat (limited to 'mysql-test/main/win_first_last_value.test')
| -rw-r--r-- | mysql-test/main/win_first_last_value.test | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/mysql-test/main/win_first_last_value.test b/mysql-test/main/win_first_last_value.test new file mode 100644 index 00000000..d027eb84 --- /dev/null +++ b/mysql-test/main/win_first_last_value.test @@ -0,0 +1,90 @@ +create table t1 ( + pk int primary key, + a int, + b int, + c char(10), + d decimal(10, 3), + e real +); + +insert into t1 values +( 1, 0, 1, 'one', 0.1, 0.001), +( 2, 0, 2, 'two', 0.2, 0.002), +( 3, 0, 3, 'three', 0.3, 0.003), +( 4, 1, 2, 'three', 0.4, 0.004), +( 5, 1, 1, 'two', 0.5, 0.005), +( 6, 1, 1, 'one', 0.6, 0.006), +( 7, 2, NULL, 'n_one', 0.5, 0.007), +( 8, 2, 1, 'n_two', NULL, 0.008), +( 9, 2, 2, NULL, 0.7, 0.009), +(10, 2, 0, 'n_four', 0.8, 0.010), +(11, 2, 10, NULL, 0.9, NULL); + +select pk, first_value(pk) over (order by pk), + last_value(pk) over (order by pk), + first_value(pk) over (order by pk desc), + last_value(pk) over (order by pk desc) +from t1 +order by pk desc; + +#enable after fix MDEV-28535 +--disable_view_protocol +select pk, + first_value(pk) over (order by pk + RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING), + last_value(pk) over (order by pk + RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING), + first_value(pk) over (order by pk desc + RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING), + last_value(pk) over (order by pk desc + RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) +from t1 +order by pk; +--enable_view_protocol + +select pk, + first_value(pk) over (order by pk desc), + last_value(pk) over (order by pk desc) +from t1; + +select pk, a, b, c, d, e, + first_value(b) over (partition by a order by pk) as fst_b, + last_value(b) over (partition by a order by pk) as lst_b, + first_value(c) over (partition by a order by pk) as fst_c, + last_value(c) over (partition by a order by pk) as lst_c, + first_value(d) over (partition by a order by pk) as fst_d, + last_value(d) over (partition by a order by pk) as lst_d, + first_value(e) over (partition by a order by pk) as fst_e, + last_value(e) over (partition by a order by pk) as lst_e +from t1; + +drop table t1; + +--echo # +--echo # MDEV-11746: Wrong result upon using FIRST_VALUE with a window frame +--echo # +create table t1 (i int); +insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10); + +select i, + first_value(i) OVER (order by i rows between CURRENT ROW and 1 FOLLOWING) as fst_1f, + last_value(i) OVER (order by i rows between CURRENT ROW and 1 FOLLOWING) as last_1f, + first_value(i) OVER (order by i rows between 1 PRECEDING AND 1 FOLLOWING) as fst_1p1f, + last_value(i) OVER (order by i rows between 1 PRECEDING AND 1 FOLLOWING) as fst_1p1f, + first_value(i) OVER (order by i rows between 2 PRECEDING AND 1 PRECEDING) as fst_2p1p, + last_value(i) OVER (order by i rows between 2 PRECEDING AND 1 PRECEDING) as fst_2p1p, + first_value(i) OVER (order by i rows between 1 FOLLOWING AND 2 FOLLOWING) as fst_1f2f, + last_value(i) OVER (order by i rows between 1 FOLLOWING AND 2 FOLLOWING) as fst_1f2f +from t1; + +drop table t1; + +--echo # +--echo # MDEV-12861 FIRST_VALUE() does not preserve the exact data type +--echo # + +CREATE TABLE t1 (a INT, b INT, c FLOAT); +INSERT INTO t1 VALUES (1,1,1),(1,2,2),(2,1,1),(2,2,2); +CREATE TABLE t2 AS SELECT a, FIRST_VALUE(b) OVER(), FIRST_VALUE(c) OVER() FROM t1 GROUP BY a; +SHOW CREATE TABLE t2; +DROP TABLE t2,t1; |