mirror of
https://github.com/MariaDB/server.git
synced 2025-01-19 13:32:33 +01:00
365 lines
7.7 KiB
Text
365 lines
7.7 KiB
Text
SET @@session.storage_engine = 'MyISAM';
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create table t1 (a int,
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b int as (-a),
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c int as (-a) persistent);
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set sql_warnings = 1;
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#
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# *** INSERT ***
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#
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# INSERT INTO tbl_name VALUES... DEFAULT is specified against vcols
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insert into t1 values (1,default,default);
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select * from t1;
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a b c
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1 -1 -1
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delete from t1;
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select * from t1;
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a b c
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# INSERT INTO tbl_name VALUES... NULL is specified against vcols
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insert into t1 values (1,null,null);
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select * from t1;
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a b c
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1 -1 -1
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delete from t1;
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select * from t1;
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a b c
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# INSERT INTO tbl_name VALUES... a non-NULL value is specified against vcols
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insert into t1 values (1,2,3);
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Warnings:
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Warning 1906 The value specified for computed column 'b' in table 't1' ignored
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Warning 1906 The value specified for computed column 'c' in table 't1' ignored
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select * from t1;
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a b c
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1 -1 -1
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delete from t1;
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select * from t1;
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a b c
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# INSERT INTO tbl_name (<non_vcol_list>) VALUES...
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insert into t1 (a) values (1), (2);
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select * from t1;
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a b c
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1 -1 -1
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2 -2 -2
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delete from t1;
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select * from t1;
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a b c
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# INSERT INTO tbl_name (<normal+vcols>) VALUES... DEFAULT is specified
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# against vcols
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insert into t1 (a,b) values (1,default), (2,default);
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select * from t1;
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a b c
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1 -1 -1
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2 -2 -2
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delete from t1;
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select * from t1;
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a b c
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# INSERT INTO tbl_name (<normal+vcols>) VALUES... NULL is specified against vcols
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insert into t1 (a,b) values (1,null), (2,null);
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select * from t1;
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a b c
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1 -1 -1
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2 -2 -2
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delete from t1;
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select * from t1;
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a b c
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# INSERT INTO tbl_name (<normal+vcols>) VALUES... a non-NULL value is specified
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# against vcols
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insert into t1 (a,b) values (1,3), (2,4);
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Warnings:
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Warning 1906 The value specified for computed column 'b' in table 't1' ignored
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Warning 1906 The value specified for computed column 'b' in table 't1' ignored
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select * from t1;
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a b c
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1 -1 -1
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2 -2 -2
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delete from t1;
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select * from t1;
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a b c
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drop table t1;
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# Table with UNIQUE non-vcol field. INSERT INTO tbl_name VALUES... ON DUPLICATE
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# KEY UPDATE <non_vcol>=expr, <vcol>=expr
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create table t1 (a int unique,
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b int as (-a),
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c int as (-a) persistent);
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insert into t1 values (1,default,default);
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insert into t1 values (1,default,default)
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on duplicate key update a=2, b=default;
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select a,b,c from t1;
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a b c
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2 -2 -2
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delete from t1 where b in (1,2);
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select * from t1;
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a b c
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2 -2 -2
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drop table t1;
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# Table with UNIQUE vcol field. INSERT INTO tbl_name VALUES... ON DUPLICATE
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# KEY UPDATE <non_vcol>=expr, <vcol>=expr
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create table t1 (a int,
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b int as (-a),
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c int as (-a) persistent unique);
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insert into t1 values (1,default,default);
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insert into t1 values (1,default,default)
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on duplicate key update a=2, b=default;
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select a,b,c from t1;
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a b c
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2 -2 -2
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# CREATE new_table ... LIKE old_table
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# INSERT INTO new_table SELECT * from old_table
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create table t2 like t1;
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insert into t2 select * from t1;
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Warnings:
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Warning 1906 The value specified for computed column 'b' in table 't2' ignored
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Warning 1906 The value specified for computed column 'c' in table 't2' ignored
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select * from t1;
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a b c
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2 -2 -2
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drop table t2;
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# CREATE new_table ... LIKE old_table INSERT INTO new_table (<non-vcols>, <vcols>)
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# SELECT <non-vcols>, <vcols> from old_table
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insert into t1 values (1,default,default);
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select * from t1;
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a b c
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2 -2 -2
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1 -1 -1
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create table t2 like t1;
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insert into t2 (a,b) select a,b from t1;
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Warnings:
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Warning 1906 The value specified for computed column 'b' in table 't2' ignored
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Warning 1906 The value specified for computed column 'b' in table 't2' ignored
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select * from t2;
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a b c
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2 -2 -2
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1 -1 -1
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drop table t2;
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drop table t1;
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#
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# *** UPDATE ***
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#
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# UPDATE tbl_name SET non-vcol=expr WHERE non-vcol=expr
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create table t1 (a int,
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b int as (-a),
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c int as (-a) persistent);
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insert into t1 (a) values (1), (2);
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select * from t1;
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a b c
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1 -1 -1
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2 -2 -2
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update t1 set a=3 where a=2;
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select * from t1;
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a b c
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1 -1 -1
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3 -3 -3
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delete from t1;
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select * from t1;
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a b c
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# UPDATE tbl_name SET vcol=expr WHERE non-vcol=expr
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insert into t1 (a) values (1), (2);
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select * from t1;
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a b c
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1 -1 -1
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2 -2 -2
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update t1 set c=3 where a=2;
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Warnings:
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Warning 1906 The value specified for computed column 'c' in table 't1' ignored
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select * from t1;
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a b c
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1 -1 -1
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2 -2 -2
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delete from t1;
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select * from t1;
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a b c
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# UPDATE tbl_name SET non-vcol=expr WHERE vcol=expr
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insert into t1 (a) values (1), (2);
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select * from t1;
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a b c
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1 -1 -1
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2 -2 -2
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update t1 set a=3 where b=-2;
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select * from t1;
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a b c
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1 -1 -1
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3 -3 -3
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delete from t1;
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select * from t1;
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a b c
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# UPDATE tbl_name SET vcol=expr WHERE vcol=expr
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insert into t1 (a) values (1), (2);
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select * from t1;
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a b c
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1 -1 -1
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2 -2 -2
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update t1 set c=3 where b=-2;
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Warnings:
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Warning 1906 The value specified for computed column 'c' in table 't1' ignored
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select * from t1;
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a b c
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1 -1 -1
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2 -2 -2
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delete from t1;
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select * from t1;
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a b c
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drop table t1;
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# INDEX created on vcol
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# UPDATE tbl_name SET non-vcol=expr WHERE vcol=const
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create table t1 (a int,
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b int as (-a),
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c int as (-a) persistent unique);
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insert into t1 (a) values (1), (2);
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select * from t1;
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a b c
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1 -1 -1
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2 -2 -2
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update t1 set a=3 where c=-2;
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select * from t1;
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a b c
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1 -1 -1
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3 -3 -3
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delete from t1;
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select * from t1;
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a b c
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# INDEX created on vcol
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# UPDATE tbl_name SET non-vcol=expr WHERE vcol=between const1 and const2
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insert into t1 (a) values (1), (2);
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select * from t1;
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a b c
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1 -1 -1
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2 -2 -2
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update t1 set a=3 where c between -3 and -2;
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select * from t1;
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a b c
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1 -1 -1
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3 -3 -3
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delete from t1;
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select * from t1;
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a b c
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# No INDEX created on vcol
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# UPDATE tbl_name SET non-vcol=expr WHERE vcol=between const1 and const2
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insert into t1 (a) values (1), (2);
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select * from t1;
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a b c
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1 -1 -1
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2 -2 -2
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update t1 set a=3 where b between -3 and -2;
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select * from t1;
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a b c
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1 -1 -1
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3 -3 -3
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delete from t1;
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select * from t1;
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a b c
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# INDEX created on vcol
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# UPDATE tbl_name SET non-vcol=expr
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# WHERE vcol=between const1 and const2 ORDER BY vcol
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insert into t1 (a) values (1), (2), (3), (4), (5);
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select * from t1;
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a b c
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1 -1 -1
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2 -2 -2
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3 -3 -3
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4 -4 -4
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5 -5 -5
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update t1 set a=6 where c between -1 and 0
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order by c;
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select * from t1;
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a b c
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6 -6 -6
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2 -2 -2
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3 -3 -3
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4 -4 -4
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5 -5 -5
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delete from t1 where c between -6 and 0;
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select * from t1;
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a b c
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# INDEX created on vcol
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# UPDATE tbl_name SET non-vcol=expr
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# WHERE vcol=between const1 and const2 ORDER BY vcol LIMIT 2
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insert into t1 (a) values (1), (2), (3), (4), (5);
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select * from t1;
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a b c
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5 -5 -5
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4 -4 -4
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3 -3 -3
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2 -2 -2
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1 -1 -1
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update t1 set a=6 where c between -1 and 0
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order by c limit 2;
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select * from t1;
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a b c
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5 -5 -5
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4 -4 -4
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3 -3 -3
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2 -2 -2
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6 -6 -6
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delete from t1 where c between -2 and 0 order by c;
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select * from t1;
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a b c
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5 -5 -5
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4 -4 -4
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3 -3 -3
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6 -6 -6
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delete from t1;
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# INDEX created on vcol
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# UPDATE tbl_name SET non-vcol=expr
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# WHERE indexed vcol=between const1 and const2 and non-indexed vcol=const3
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insert into t1 (a) values (1), (2), (3), (4), (5);
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select * from t1;
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a b c
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1 -1 -1
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2 -2 -2
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3 -3 -3
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4 -4 -4
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5 -5 -5
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update t1 set a=6 where (c between -2 and 0) and (b=-1);
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select * from t1;
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a b c
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6 -6 -6
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2 -2 -2
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3 -3 -3
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4 -4 -4
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5 -5 -5
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delete from t1;
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# INDEX created on vcol
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# UPDATE tbl_name SET non-vcol=expr
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# WHERE indexed vcol=between const1 and const2 and non-indexed vcol=const3
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# ORDER BY indexed vcol
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insert into t1 (a) values (1), (2), (3), (4), (5);
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select * from t1;
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a b c
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1 -1 -1
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2 -2 -2
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3 -3 -3
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4 -4 -4
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5 -5 -5
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update t1 set a=6 where (c between -2 and 0) and (b=-1) order by c;
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select * from t1;
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a b c
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6 -6 -6
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2 -2 -2
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3 -3 -3
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4 -4 -4
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5 -5 -5
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delete from t1;
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drop table t1;
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#
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# *** REPLACE ***
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#
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# UNIQUE INDEX on vcol
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# REPLACE tbl_name (non-vcols) VALUES (non-vcols);
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create table t1 (a int,
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b int as (-a),
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c int as (-a) persistent unique,
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d varchar(16));
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insert into t1 (a,d) values (1,'a'), (2,'b');
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select * from t1;
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a b c d
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1 -1 -1 a
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2 -2 -2 b
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replace t1 (a,d) values (1,'c');
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select * from t1;
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a b c d
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1 -1 -1 c
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2 -2 -2 b
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delete from t1;
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select * from t1;
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a b c d
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set sql_warnings = 0;
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drop table t1;
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