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16b1cb6502
multi-update first runs a select to find affected rows, then performs a separate update step. On the second step WITH CHECK OPTION rows are read with rnd_read, but the first step might've been done with keyread. keyread over indexed virtual columns only reads the column's value, not dependent base columns. This is reflected in the read_set too. But on the rnd_read step base columns must be read - thus we need to update the read_set before doing updates.
168 lines
4.5 KiB
Plaintext
168 lines
4.5 KiB
Plaintext
create table t1 (a int, b int as (a+1), c int as (b+1) stored);
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insert t1 set a=1;
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select * from t1;
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a b c
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1 2 3
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update t1 set a=2;
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select * from t1;
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a b c
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2 3 4
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drop table t1;
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create table t1 (a int, c int as(a), p varchar(20) as(y), y char(20), index (p,c));
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insert into t1 (a,y) values(1, "yyy");
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update t1 set a = 100 where a = 1;
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drop table t1;
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create table t1 (
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a varchar(10000),
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b varchar(3000),
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c varchar(14000) generated always as (concat(a,b)) virtual,
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d varchar(5000) generated always as (b) virtual,
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e int(11) generated always as (10) virtual,
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h int(11) not null primary key,
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index(c(100), d(20)));
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insert t1 (a,b,h) values (repeat('g', 10000), repeat('x', 2800), 1);
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update t1 set a = repeat(cast(1 as char), 2000);
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drop table t1;
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create table t1 (
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a varchar(10000),
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b varchar(3000),
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c varchar(14000) generated always as (concat(a,b)) virtual,
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i varchar(5000) generated always as (b) virtual,
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d varchar(5000) generated always as (i) virtual,
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e int(11) generated always as (10) virtual,
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h int(11) not null primary key,
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index(c(100), d(20)));
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insert t1 (a,b,h) values (repeat('g', 10000), repeat('x', 2800), 1);
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update t1 set a = repeat(cast(1 as char), 2000);
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drop table t1;
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create table t1(a blob not null, b int, c varbinary (10) generated always as (a) virtual, unique (c(9)));
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insert t1 (a,b) values ('a', 1);
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replace t1 set a = 'a',b =1;
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insert t1 (a,b) values ('a', 1) on duplicate key update a='b', b=2;
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select * from t1;
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a b c
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b 2 b
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drop table t1;
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create table t (a int primary key, b int, c int as (b), index (c));
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insert t (a,b) values (9,0);
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create table t2 select * from t;
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update t, t2 set t.b=10 where t.a=t2.a;
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check table t;
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Table Op Msg_type Msg_text
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test.t check status OK
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select * from t;
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a b c
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9 10 10
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drop table t, t2;
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create table t1 (a int, b int, c int, d int, e int);
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insert t1 values (1,2,3,4,5), (1,2,3,4,5);
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SET STATEMENT sql_mode = 'NO_ENGINE_SUBSTITUTION' FOR
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create table t (a int primary key,
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b int, c blob as (b), index (c(57)),
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d blob, e blob as (d), index (e(57)))
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replace select * from t1;
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Warnings:
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Warning 1906 The value specified for generated column 'c' in table 't' ignored
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Warning 1906 The value specified for generated column 'e' in table 't' ignored
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Warning 1906 The value specified for generated column 'c' in table 't' ignored
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Warning 1906 The value specified for generated column 'e' in table 't' ignored
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check table t;
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Table Op Msg_type Msg_text
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test.t check status OK
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select * from t;
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a b c d e
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1 2 2 4 4
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update t set a=10, b=1, d=1;
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check table t;
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Table Op Msg_type Msg_text
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test.t check status OK
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select * from t;
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a b c d e
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10 1 1 1 1
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replace t (a,b,d) values (10,2,2);
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check table t;
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Table Op Msg_type Msg_text
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test.t check status OK
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select * from t;
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a b c d e
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10 2 2 2 2
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insert t(a,b,d) values (10) on duplicate key update b=3;
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ERROR 21S01: Column count doesn't match value count at row 1
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insert t(a,b,d) values (10,2,2) on duplicate key update b=3, d=3;
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check table t;
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Table Op Msg_type Msg_text
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test.t check status OK
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select * from t;
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a b c d e
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10 3 3 3 3
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replace t (a,b,d) select 10,4,4;
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check table t;
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Table Op Msg_type Msg_text
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test.t check status OK
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select * from t;
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a b c d e
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10 4 4 4 4
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insert t(a,b,d) select 10,4,4 on duplicate key update b=5, d=5;
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check table t;
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Table Op Msg_type Msg_text
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test.t check status OK
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select * from t;
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a b c d e
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10 5 5 5 5
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replace delayed t (a,b,d) values (10,6,6);
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flush tables;
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check table t;
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Table Op Msg_type Msg_text
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test.t check status OK
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select * from t;
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a b c d e
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10 6 6 6 6
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insert delayed t(a,b,d) values (10,6,6) on duplicate key update b=7, d=7;
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flush tables;
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check table t;
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Table Op Msg_type Msg_text
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test.t check status OK
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select * from t;
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a b c d e
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10 7 7 7 7
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load data infile 'MYSQLTEST_VARDIR/tmp/vblobs.txt' replace into table t;
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check table t;
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Table Op Msg_type Msg_text
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test.t check status OK
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select * from t;
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a b c d e
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10 8 8 8 8
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update t set a=11, b=9, d=9 where a>5;
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check table t;
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Table Op Msg_type Msg_text
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test.t check status OK
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select * from t;
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a b c d e
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11 9 9 9 9
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create table t2 select * from t;
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update t, t2 set t.b=10, t.d=10 where t.a=t2.a;
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check table t;
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Table Op Msg_type Msg_text
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test.t check status OK
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select * from t;
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a b c d e
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11 10 10 10 10
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update t, t tt set t.b=11, tt.d=11 where t.a=tt.a;
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check table t;
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Table Op Msg_type Msg_text
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test.t check status OK
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select * from t;
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a b c d e
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11 11 11 11 11
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drop table t, t1, t2;
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create table t (f1 int, f2 int, f3 int as (f1*2) virtual, key(f3,f2));
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insert into t (f1,f2) values (1,1),(2,2);
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create view v as
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select a2.f1, a2.f2, a1.f3
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from t a1, t a2
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where a2.f3 <> 0
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with local check option;
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update v set f3 = 52;
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drop view v;
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drop table t;
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