Bug#27580 SPACE() function collation bug?

Problem: when character_set_connection=utf8,
mixing SPACE() with a non-Unicode column (e.g. for concat)
produced "illegal mix of collations" error.
Fix: Item_string() corresponding to space character
is now created using "ASCII" repertoire. Previously
it was incorrectly created using "UNICODE" repertoure, which
didn't allow to convert results of SPACE() to a non-Unicode
character set.

1 files changed, 16 insertions, 0 deletions

diff --git a/mysql-test/include/ctype_common.inc b/mysql-test/include/ctype_common.inc
index 202c508a9c9..b9bd7869967 100644
--- a/mysql-test/include/ctype_common.inc
+++ b/mysql-test/include/ctype_common.inc
@@ -13,6 +13,8 @@
 
 SET @safe_character_set_server= @@character_set_server;
 SET @safe_collation_server= @@collation_server;
+SET @safe_character_set_client= @@character_set_client;
+SET @safe_character_set_results= @@character_set_results;
 SET character_set_server= @test_character_set;
 SET collation_server= @test_collation;
 CREATE DATABASE d1;
@@ -51,8 +53,22 @@ SELECT c1 as want1result  from t1 where c1 like 'locatio%';
 SELECT c1 as want1result  from t1 where c1 like 'location%';
 DROP TABLE t1;
 
+#
+# Bug#27580 SPACE() function collation bug?
+#
+set names utf8;
+create table t1 (
+  name varchar(10),
+  level smallint unsigned);
+show create table t1;
+insert into t1 values ('string',1);
+select concat(name,space(level)), concat(name, repeat(' ',level)) from t1;
+drop table t1;
+
 DROP DATABASE d1;
 # Restore settings
 USE test;
 SET character_set_server= @safe_character_set_server;
 SET collation_server= @safe_collation_server;
+SET character_set_client= @safe_character_set_client;
+SET character_set_results= @safe_character_set_results;