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Bug#12518

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"COLUMN_DEFAULT has wrong value if NOT NULL is set"
  Show NULL instead of empty string when no default value is set


mysql-test/r/information_schema.result:
  test for bug 12518
mysql-test/t/information_schema.test:
  test for bug 12518
sql/sql_show.cc:
  report NULL for information schema result when there is no default value
This commit is contained in:
unknown
2005-08-15 17:14:55 +01:00
parent 3b422187f6
commit 2fc78cb3fd
3 changed files with 20 additions and 0 deletions
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9
mysql-test/r/information_schema.result
View File

@ -958,3 +958,12 @@ trigger_schema trigger_name
test tr1 test tr1
use test; use test;
drop table t1; drop table t1;
create table t1 (a int not null, b int);
use information_schema;
select column_name, column_default from columns
where table_schema='test' and table_name='t1';
column_name column_default
a NULL
b NULL
use test;
drop table t1;

10
mysql-test/t/information_schema.test
View File

@ -639,3 +639,13 @@ select trigger_schema, trigger_name from triggers where
trigger_name='tr1'; trigger_name='tr1';
use test; use test;
drop table t1; drop table t1;
#
# Bug#12518 COLUMN_DEFAULT has wrong value if NOT NULL is set
#
create table t1 (a int not null, b int);
use information_schema;
select column_name, column_default from columns
where table_schema='test' and table_name='t1';
use test;
drop table t1;

1
sql/sql_show.cc
View File

@ -2462,6 +2462,7 @@ static int get_schema_column_record(THD *thd, struct st_table_list *tables,
table->field[5]->set_notnull(); table->field[5]->set_notnull();
} }
else if (field->unireg_check == Field::NEXT_NUMBER || else if (field->unireg_check == Field::NEXT_NUMBER ||
lex->orig_sql_command != SQLCOM_SHOW_FIELDS ||
field->maybe_null()) field->maybe_null())
table->field[5]->set_null(); // Null as default table->field[5]->set_null(); // Null as default
else else