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Patch changing how ALTER TABLE implementation handles table locking

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and invalidation in the most general case (non-temporary table and
not simple RENAME or ENABLE/DISABLE KEYS or partitioning command).

See comment for sql/sql_table.cc for more information.

These changes are prerequisite for 5.1 version of fix for bug #23667
"CREATE TABLE LIKE is not isolated from alteration by other connections"
This commit is contained in:
dlenev@mockturtle.local
2007-05-19 10:49:56 +04:00
parent e4a3189c4f
commit b0dfdc2b83
9 changed files with 399 additions and 173 deletions
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24
mysql-test/r/innodb_mysql.result
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@ -796,4 +796,28 @@ lock table t2 write;
alter table t2 modify i int default 4, rename t1;
unlock tables;
drop table t1;
drop table if exists t1;
create table t1 (i int);
insert into t1 values ();
lock table t1 write;
alter table t1 modify i int default 1;
insert into t1 values ();
select * from t1;
i
NULL
1
alter table t1 change i c char(10) default "Two";
insert into t1 values ();
select * from t1;
c
NULL
1
Two
unlock tables;
select * from t1;
c
NULL
1
Two
drop tables t1;
End of 5.1 tests