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create table t1 ( pk int primary key, a int, b int ); create table t2 ( pk int primary key, a int, b int, c char(10) ); insert into t2 values ( 1, 0, 1, 'one'), ( 2, 0, 2, 'two'), ( 3, 0, 3, 'three'), ( 4, 1, 1, 'one'), ( 5, 1, 1, 'two'), ( 6, 1, 2, 'three'); # First try some invalid queries. select std(c) over (order by a) from t2; std(c) over (order by a) 0 0 0 0 0 0 # Empty frame. select std(b) over (order by a rows between 2 following and 1 following) as exp from t2; exp NULL NULL NULL NULL NULL NULL select std(b) over (order by a range between 2 following and 1 following) as exp from t2; exp NULL NULL NULL NULL NULL NULL select std(b) over (order by a rows between 1 preceding and 2 preceding) as exp from t2; exp NULL NULL NULL NULL NULL NULL select std(b) over (order by a range between 1 preceding and 2 preceding) as exp from t2; exp NULL NULL NULL NULL NULL NULL select std(b) over (order by a rows between 1 following and 0 following) as exp from t2; exp NULL NULL NULL NULL NULL NULL select std(b) over (order by a range between 1 following and 0 following) as exp from t2; exp NULL NULL NULL NULL NULL NULL select std(b) over (order by a rows between 1 following and 0 preceding) as exp from t2; exp NULL NULL NULL NULL NULL NULL select std(b) over (order by a range between 1 following and 0 preceding) as exp from t2; exp NULL NULL NULL NULL NULL NULL select std(b) over (order by a rows between 0 following and 1 preceding) as exp from t2; exp NULL NULL NULL NULL NULL NULL select std(b) over (order by a range between 0 following and 1 preceding) as exp from t2; exp NULL NULL NULL NULL NULL NULL # 1 row frame. select std(b) over (order by a rows between current row and current row) as exp from t2; exp 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 select std(b) over (order by a rows between 0 preceding and current row) as exp from t2; exp 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 select std(b) over (order by a rows between 0 preceding and 0 preceding) as exp from t2; exp 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 select std(b) over (order by a rows between 0 preceding and 0 following) as exp from t2; exp 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 select std(b) over (order by a rows between 0 following and 0 preceding) as exp from t2; exp 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 select std(b) over (order by a rows between 0 following and current row) as exp from t2; ERROR HY000: Unacceptable combination of window frame bound specifications select std(b) over (order by a rows between current row and 0 following) as exp from t2; exp 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 # Only peers frame. select a, b, std(b) over (order by a range between 0 preceding and 0 preceding) as exp from t2; a b exp 0 1 0.8165 0 2 0.8165 0 3 0.8165 1 1 0.4714 1 1 0.4714 1 2 0.4714 select a, b, std(b) over (order by a range between 0 preceding and current row) as exp from t2; a b exp 0 1 0.8165 0 2 0.8165 0 3 0.8165 1 1 0.4714 1 1 0.4714 1 2 0.4714 select a, b, std(b) over (order by a range between current row and 0 preceding) as exp from t2; ERROR HY000: Unacceptable combination of window frame bound specifications select a, b, std(b) over (order by a range between current row and 0 following) as exp from t2; a b exp 0 1 0.8165 0 2 0.8165 0 3 0.8165 1 1 0.4714 1 1 0.4714 1 2 0.4714 select a, b, std(b) over (order by a range between 0 following and 0 following) as exp from t2; a b exp 0 1 0.8165 0 2 0.8165 0 3 0.8165 1 1 0.4714 1 1 0.4714 1 2 0.4714 # 2 rows frame. select pk, a, b, std(b) over (order by a, b, pk rows between 1 preceding and current row) as exp from t2; pk a b exp 1 0 1 0.0000 2 0 2 0.5000 3 0 3 0.5000 4 1 1 1.0000 5 1 1 0.0000 6 1 2 0.5000 select pk, a, b, std(b) over (order by a, b, pk rows between 1 preceding and 0 preceding) as exp from t2; pk a b exp 1 0 1 0.0000 2 0 2 0.5000 3 0 3 0.5000 4 1 1 1.0000 5 1 1 0.0000 6 1 2 0.5000 select pk, a, b, std(b) over (order by a, b, pk rows between current row and 1 following) as exp from t2; pk a b exp 1 0 1 0.5000 2 0 2 0.5000 3 0 3 1.0000 4 1 1 0.0000 5 1 1 0.5000 6 1 2 0.0000 select pk, a, b, std(b) over (order by a, b, pk rows between 0 following and 1 following) as exp from t2; pk a b exp 1 0 1 0.5000 2 0 2 0.5000 3 0 3 1.0000 4 1 1 0.0000 5 1 1 0.5000 6 1 2 0.0000 # 2 peers frame. select pk, a, b, std(b) over (order by a range between 1 preceding and current row) as exp from t2; pk a b exp 1 0 1 0.8165 2 0 2 0.8165 3 0 3 0.8165 4 1 1 0.7454 5 1 1 0.7454 6 1 2 0.7454 select pk, a, b, std(b) over (order by a range between 1 preceding and 0 preceding) as exp from t2; pk a b exp 1 0 1 0.8165 2 0 2 0.8165 3 0 3 0.8165 4 1 1 0.7454 5 1 1 0.7454 6 1 2 0.7454 select pk, a, b, std(b) over (order by a range between current row and 1 following) as exp from t2; pk a b exp 1 0 1 0.7454 2 0 2 0.7454 3 0 3 0.7454 4 1 1 0.4714 5 1 1 0.4714 6 1 2 0.4714 select pk, a, b, std(b) over (order by a range between 0 following and 1 following) as exp from t2; pk a b exp 1 0 1 0.7454 2 0 2 0.7454 3 0 3 0.7454 4 1 1 0.4714 5 1 1 0.4714 6 1 2 0.4714 drop table t1; drop table t2;