fixed query cache with system database

FN_NO_CASE_SENCE used instead of __WIN__ in table name handling of quary cache


mysql-test/r/query_cache.result:
  query cache with system database test
mysql-test/t/query_cache.test:
  query cache with system database test
sql/sql_cache.cc:
  fixed query cache with system database
  FN_NO_CASE_SENCE used instead of __WIN__

2 files changed, 24 insertions, 0 deletions

diff --git a/mysql-test/r/query_cache.result b/mysql-test/r/query_cache.result
index 7c53074b6da..a09f4608142 100644
--- a/mysql-test/r/query_cache.result
+++ b/mysql-test/r/query_cache.result
@@ -526,3 +526,13 @@ show status like "Qcache_queries_in_cache";
 Variable_name	Value
 Qcache_queries_in_cache	2
 drop table t1, t2, t3;
+use mysql;
+select * from db;
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	0
+use test;
+select * from mysql.db;
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	0
diff --git a/mysql-test/t/query_cache.test b/mysql-test/t/query_cache.test
index 5dc6d1047f4..a0d2a34ee76 100644
--- a/mysql-test/t/query_cache.test
+++ b/mysql-test/t/query_cache.test
@@ -367,3 +367,17 @@ show status like "Qcache_queries_in_cache";
 select * from t3;
 show status like "Qcache_queries_in_cache";
 drop table t1, t2, t3;
+
+#
+# system databse test
+#
+use mysql;
+disable_result_log;
+select * from db;
+enable_result_log;
+show status like "Qcache_queries_in_cache";
+use test;
+disable_result_log;
+select * from mysql.db;
+enable_result_log;
+show status like "Qcache_queries_in_cache";