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Fix for bug#15307 GROUP_CONCAT() with ORDER BY returns empty set on information_schema(2nd ver)

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Fill schema tables with data before filesort if it's necessary
This commit is contained in:
gluh@eagle.intranet.mysql.r18.ru
2006-01-24 16:48:19 +04:00
parent f2fa83fae0
commit b4f7c9bbd5
6 changed files with 37 additions and 1 deletions
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8
mysql-test/r/information_schema.result
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@@ -1089,3 +1089,11 @@ create table mysqltest.t1(a int);
select table_schema from information_schema.tables where table_schema='mysqltest';
table_schema
drop database mysqltest;
select column_type, group_concat(table_schema, '.', table_name), count(*) as num
from information_schema.columns where
table_schema='information_schema' and
(column_type = 'varchar(7)' or column_type = 'varchar(20)')
group by column_type order by num;
column_type group_concat(table_schema, '.', table_name) num
varchar(20) information_schema.COLUMNS 1
varchar(7) information_schema.ROUTINES,information_schema.VIEWS 2

9
mysql-test/t/information_schema.test
View File

@@ -800,3 +800,12 @@ create table mysqltest.t1(a int);
select table_schema from information_schema.tables where table_schema='mysqltest';
--exec chmod +r $MYSQL_TEST_DIR/var/master-data/mysqltest
drop database mysqltest;
#
# Bug#15307 GROUP_CONCAT() with ORDER BY returns empty set on information_schema
#
select column_type, group_concat(table_schema, '.', table_name), count(*) as num
from information_schema.columns where
table_schema='information_schema' and
(column_type = 'varchar(7)' or column_type = 'varchar(20)')
group by column_type order by num;