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7fb9d64989
Part of MDEV-5336 Implement LOCK FOR BACKUP Originally both table metadata lock and global read lock protection were acquired before getting TABLE from table cache. This will be reordered in a future commit with MDL_BACKUP_XXX locks so that we first take table metadata lock, then get TABLE from table cache, then acquire analogue of global read lock. This patch both simplifies FLUSH TABLES code, makes FLUSH TABLES to lock less and also enables FLUSH TABLES code to be used with backup locks. The usage of FLUSH TABLES changes slightly: - FLUSH TABLES without any arguments will now only close not used tables and tables locked by the FLUSH TABLES connection. All not used table shares will be closed. Tables locked by the FLUSH TABLES connection will be reopened and re-locked after all others has stoped using the table (as before). If there was no locked tables, then FLUSH TABLES is instant and will not cause any waits. FLUSH TABLES will not wait for any in use table. - FLUSH TABLES with a table list, will ensure that the tables are closed before statement returns. The code is now only using MDL locks and not table share versions, which simplices the code greatly. One visible change is that the server will wait for the end of the transaction that are using the tables. Before FLUSH TABLES only waited for the statements to end. Signed-off-by: Monty <monty@mariadb.org>
130 lines
4.1 KiB
Plaintext
130 lines
4.1 KiB
Plaintext
#
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# Test how UPDATE detects what columns need to be read (or generated) in a row
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#
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# stored column depends on virtual column depends on updated column.
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# this tests TABLE::mark_virtual_columns_for_write()
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#
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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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update t1 set a=2;
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select * from t1;
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drop table t1;
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#
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# one keypart is virtual, the other keypart is updated
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# this tests TABLE::mark_columns_needed_for_update()
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#
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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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show create table t1;
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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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check table t1;
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drop table t1;
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#
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# note: prefix keys below
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#
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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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#
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# UPDATE disguised as INSERT
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#
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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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drop table t1;
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#
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# multi-UPDATE and const tables
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#
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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; select * from t;
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drop table t, t2;
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#
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# blobs
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# This tests BLOB_VALUE_ORPHANAGE
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#
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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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check table t; select * from t;
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update t set a=10, b=1, d=1;
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check table t; select * from t;
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replace t (a,b,d) values (10,2,2);
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check table t; select * from t;
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--error ER_WRONG_VALUE_COUNT_ON_ROW
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insert t(a,b,d) values (10) on duplicate key update b=3;
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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; select * from t;
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replace t (a,b,d) select 10,4,4;
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check table t; select * from t;
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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; select * from t;
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replace delayed t (a,b,d) values (10,6,6);
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flush tables t;
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check table t; select * from t;
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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 t;
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check table t; select * from t;
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--write_file $MYSQLTEST_VARDIR/tmp/vblobs.txt
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10 8 foo 8 foo
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EOF
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--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
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--eval load data infile '$MYSQLTEST_VARDIR/tmp/vblobs.txt' replace into table t
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--remove_file $MYSQLTEST_VARDIR/tmp/vblobs.txt
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check table t; select * from t;
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update t set a=11, b=9, d=9 where a>5;
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check table t; select * from t;
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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; select * from t;
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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; select * from t;
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drop table t, t1, t2;
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#
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# MDEV-13623 Assertion `!table || (!table->read_set || bitmap_is_set(table->read_set, field_index))' failed in virtual longlong Field_long::val_int
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#
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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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