diff --git a/mysql-test/r/func_gconcat.result b/mysql-test/r/func_gconcat.result
index 5c3c2f10000..2b6079d5ffd 100644
--- a/mysql-test/r/func_gconcat.result
+++ b/mysql-test/r/func_gconcat.result
@@ -168,7 +168,7 @@ REQ_ID	URL
 1	X
 5	X,X,X
 select REQ_ID, Group_Concat(URL) as URL, Min(t1.URL_ID) urll,
-Max(t1.URL_ID)
 urlg from t1, t2 where t2.URL_ID = t1.URL_ID group by REQ_ID;
+Max(t1.URL_ID) urlg from t1, t2 where t2.URL_ID = t1.URL_ID group by REQ_ID;
 REQ_ID	URL	urll	urlg
 1	X	4	4
 5	X,X,X	4	5
diff --git a/mysql-test/r/query_cache.result b/mysql-test/r/query_cache.result
index d1ef5ab828e..a6aca2f983c 100644
--- a/mysql-test/r/query_cache.result
+++ b/mysql-test/r/query_cache.result
@@ -709,3 +709,50 @@ Variable_name	Value
 Qcache_queries_in_cache	2
 SET OPTION SQL_SELECT_LIMIT=DEFAULT;
 drop table t1;
+SET NAMES koi8r;
+CREATE TABLE t1 (a char(1) character set koi8r);
+INSERT INTO t1 VALUES (_koi8r'á'),(_koi8r'Á');
+SELECT a,'Â','â'='Â' FROM t1;
+a	Â	'â'='Â'
+á	Â	1
+Á	Â	1
+show status like "Qcache_hits";
+Variable_name	Value
+Qcache_hits	12
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	1
+set collation_connection=koi8r_bin;
+SELECT a,'Â','â'='Â' FROM t1;
+a	Â	'â'='Â'
+á	Â	0
+Á	Â	0
+show status like "Qcache_hits";
+Variable_name	Value
+Qcache_hits	12
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	2
+set character_set_client=cp1251;
+SELECT a,'Â','â'='Â' FROM t1;
+a	÷	'×'='÷'
+á	÷	0
+Á	÷	0
+show status like "Qcache_hits";
+Variable_name	Value
+Qcache_hits	12
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	3
+set character_set_results=cp1251;
+SELECT a,'Â','â'='Â' FROM t1;
+a	Â	'â'='Â'
+À	Â	0
+à	Â	0
+show status like "Qcache_hits";
+Variable_name	Value
+Qcache_hits	12
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	4
+DROP TABLE t1;
diff --git a/mysql-test/t/func_gconcat.test b/mysql-test/t/func_gconcat.test
index b10f6d2af21..e82d732d42c 100644
--- a/mysql-test/t/func_gconcat.test
+++ b/mysql-test/t/func_gconcat.test
@@ -94,7 +94,7 @@ t2.URL_ID = t1.URL_ID group by REQ_ID;
 # check min/max function
 --replace_result www.help.com X www.host.com X www.google.com X
 select REQ_ID, Group_Concat(URL) as URL, Min(t1.URL_ID) urll,
-Max(t1.URL_ID)
 urlg from t1, t2 where t2.URL_ID = t1.URL_ID group by REQ_ID;
+Max(t1.URL_ID) urlg from t1, t2 where t2.URL_ID = t1.URL_ID group by REQ_ID;
 
 drop table t1;
 drop table t2;
diff --git a/mysql-test/t/query_cache.test b/mysql-test/t/query_cache.test
index dcdf70ee612..ed4c5c91c4d 100644
--- a/mysql-test/t/query_cache.test
+++ b/mysql-test/t/query_cache.test
@@ -487,3 +487,50 @@ select * from t1;
 show status like "Qcache_queries_in_cache";
 SET OPTION SQL_SELECT_LIMIT=DEFAULT;
 drop table t1;
+
+#
+# Test character set related variables:
+#   character_set_result
+#   character_set_client
+#   charactet_set_connection/collation_connection
+# If at least one of the above variables has changed,
+# the cached query can't be reused. In the below test
+# absolutely the same query is used several times,
+# SELECT should fetch different results for every instance. 
+# No hits should be produced.
+# New cache entry should appear for every SELECT.
+#
+SET NAMES koi8r;
+CREATE TABLE t1 (a char(1) character set koi8r);
+INSERT INTO t1 VALUES (_koi8r'á'),(_koi8r'Á');
+#
+# Run select
+#
+SELECT a,'Â','â'='Â' FROM t1;
+show status like "Qcache_hits";
+show status like "Qcache_queries_in_cache";
+#
+# Change collation_connection and run the same query again
+#
+set collation_connection=koi8r_bin;
+SELECT a,'Â','â'='Â' FROM t1; 
+show status like "Qcache_hits";
+show status like "Qcache_queries_in_cache";
+#
+# Now change character_set_client and run the same query again
+#
+set character_set_client=cp1251;
+SELECT a,'Â','â'='Â' FROM t1; 
+show status like "Qcache_hits";
+show status like "Qcache_queries_in_cache";
+#
+# And finally change character_set_results and run the same query again
+#
+set character_set_results=cp1251;
+SELECT a,'Â','â'='Â' FROM t1; 
+show status like "Qcache_hits";
+show status like "Qcache_queries_in_cache";
+#
+# Keep things tidy
+#
+DROP TABLE t1;