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Bug#31630 debug assert with explain extended select ... from i_s

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added 'in_rows' column value for 'describe extended' for the case 
when 'describe' handles I_S table
This commit is contained in:
gluh@mysql.com/eagle.(none) 2007-11-02 12:39:14 +04:00
parent b0e9fa31af
commit 4198c2bcf5
3 changed files with 14 additions and 0 deletions
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5
mysql-test/r/information_schema.result
View file

@ -1604,4 +1604,9 @@ select * from `information_schema`.`VIEWS` where `TABLE_SCHEMA` = NULL;
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME VIEW_DEFINITION CHECK_OPTION IS_UPDATABLE DEFINER SECURITY_TYPE CHARACTER_SET_CLIENT COLLATION_CONNECTION
select * from `information_schema`.`VIEWS` where `TABLE_NAME` = NULL;
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME VIEW_DEFINITION CHECK_OPTION IS_UPDATABLE DEFINER SECURITY_TYPE CHARACTER_SET_CLIENT COLLATION_CONNECTION
explain extended select 1 from information_schema.TABLES;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE TABLES ALL NULL NULL NULL NULL NULL NULL Skip_open_table; Scanned all databases
Warnings:
Note 1003 select 1 AS `1` from `information_schema`.`TABLES`
End of 5.1 tests.

5
mysql-test/t/information_schema.test
View file

@ -1232,4 +1232,9 @@ select * from `information_schema`.`TRIGGERS` where `EVENT_OBJECT_TABLE` = NULL;
select * from `information_schema`.`VIEWS` where `TABLE_SCHEMA` = NULL;
select * from `information_schema`.`VIEWS` where `TABLE_NAME` = NULL;
#
# Bug#31630 debug assert with explain extended select ... from i_s
#
explain extended select 1 from information_schema.TABLES;
--echo End of 5.1 tests.

4
sql/sql_select.cc
View file

@ -15819,6 +15819,10 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order,
/* Add "rows" field to item_list. */
if (table_list->schema_table)
{
/* in_rows */
if (join->thd->lex->describe & DESCRIBE_EXTENDED)
item_list.push_back(item_null);
/* rows */
item_list.push_back(item_null);
}
else