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MDEV-17778: Alter table leads to a truncation warning with ANALYZE command

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Alter statement changed the THD structure by setting the value to FIELD_CHECK_WARN
and then not resetting it back. This led ANALYZE to throw a warning which previously
it didn't.
This commit is contained in:
Varun Gupta 2018-12-10 00:34:41 +05:30
commit 8aef7f2bb9
6 changed files with 47 additions and 18 deletions
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21
mysql-test/main/alter_table.result
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@ -2469,3 +2469,24 @@ DROP TABLE t1;
#
# End of 10.2 tests
#
#
# MDEV-17778: Alter table leads to a truncation warning with ANALYZE command
#
set @save_use_stat_tables= @@use_stat_tables;
set @save_optimizer_use_condition_selectivity= @@optimizer_use_condition_selectivity;
set @@optimizer_use_condition_selectivity=4;
set @@use_stat_tables=PREFERABLY;
create table t1 (a int)engine=InnoDB;
insert into t1 values (1),(1),(2),(3);
analyze table t1;
Table Op Msg_type Msg_text
test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
alter table t1 change a b int;
analyze table t1;
Table Op Msg_type Msg_text
test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
set @@use_stat_tables= @save_use_stat_tables;
set @@optimizer_use_condition_selectivity= @save_optimizer_use_condition_selectivity;
drop table t1;