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