tabe & query hashes made case insensitive (BUG#933)

mysql-test/r/query_cache.result:
  fixed charecter sets
  new case sensetive test
mysql-test/t/query_cache.test:
  fixed charecter sets
  new case sensetive test
sql/sql_cache.cc:
  query & table comparision should be case insensitive

mysql-test/r/query_cache.result

@@ -374,22 +374,23 @@ drop database mysqltest;
 show status like "Qcache_queries_in_cache";
 Variable_name	Value
 Qcache_queries_in_cache	0
-create table t1 (a char(1) not null);
-insert into t1 values("");
+create table t1 (a char(1) not null collate koi8r_general_ci);
+insert into t1 values(_koi8r"");
+set CHARACTER SET koi8r;
 select * from t1;
 a
 
 set CHARACTER SET cp1251_koi8;
 select * from t1;
 a
-
+
 set CHARACTER SET DEFAULT;
 show status like "Qcache_queries_in_cache";
 Variable_name	Value
-Qcache_queries_in_cache	1
+Qcache_queries_in_cache	2
 show status like "Qcache_hits";
 Variable_name	Value
-Qcache_hits	5
+Qcache_hits	4
 drop table t1;
 create database if not exists mysqltest;
 create table mysqltest.t1 (i int not null);
@@ -415,7 +416,7 @@ Variable_name	Value
 Qcache_queries_in_cache	2
 show status like "Qcache_hits";
 Variable_name	Value
-Qcache_hits	7
+Qcache_hits	6
 drop database mysqltest;
 drop table t1;
 create table t1 (i int not null);
@@ -429,7 +430,7 @@ FOUND_ROWS()
 4
 show status like "Qcache_hits";
 Variable_name	Value
-Qcache_hits	7
+Qcache_hits	6
 show status like "Qcache_queries_in_cache";
 Variable_name	Value
 Qcache_queries_in_cache	1
@@ -441,7 +442,7 @@ FOUND_ROWS()
 1
 show status like "Qcache_hits";
 Variable_name	Value
-Qcache_hits	7
+Qcache_hits	6
 show status like "Qcache_queries_in_cache";
 Variable_name	Value
 Qcache_queries_in_cache	2
@@ -454,7 +455,7 @@ FOUND_ROWS()
 4
 show status like "Qcache_hits";
 Variable_name	Value
-Qcache_hits	8
+Qcache_hits	7
 show status like "Qcache_queries_in_cache";
 Variable_name	Value
 Qcache_queries_in_cache	2
@@ -466,7 +467,7 @@ FOUND_ROWS()
 1
 show status like "Qcache_hits";
 Variable_name	Value
-Qcache_hits	9
+Qcache_hits	8
 show status like "Qcache_queries_in_cache";
 Variable_name	Value
 Qcache_queries_in_cache	2
@@ -535,7 +536,7 @@ a
 3
 show status like "Qcache_hits";
 Variable_name	Value
-Qcache_hits	12
+Qcache_hits	11
 show status like "Qcache_queries_in_cache";
 Variable_name	Value
 Qcache_queries_in_cache	2
@@ -552,7 +553,7 @@ a
 3
 show status like "Qcache_hits";
 Variable_name	Value
-Qcache_hits	13
+Qcache_hits	12
 show status like "Qcache_queries_in_cache";
 Variable_name	Value
 Qcache_queries_in_cache	2
@@ -561,6 +562,15 @@ set GLOBAL query_cache_min_res_unit=default;
 show global variables like "query_cache_min_res_unit";
 Variable_name	Value
 query_cache_min_res_unit	4096
+create table t1 (a int not null);
+insert into t1 values (1);
+select "aaa" from t1;
+aaa
+aaa
+select "AAA" from t1;
+AAA
+AAA
+drop table t1;
 create table t1 (a int);
 set GLOBAL query_cache_size=1000;
 show global variables like "query_cache_size";

mysql-test/t/query_cache.test

@@ -260,8 +260,9 @@ show status like "Qcache_queries_in_cache";
 #
 # Charset convertion (cp1251_koi8 always present)
 #
-create table t1 (a char(1) not null);
-insert into t1 values("");
+create table t1 (a char(1) not null collate koi8r_general_ci);
+insert into t1 values(_koi8r"");
+set CHARACTER SET koi8r;
 select * from t1;
 set CHARACTER SET cp1251_koi8;
 select * from t1;
@@ -368,6 +369,15 @@ drop table t2;
 set GLOBAL query_cache_min_res_unit=default;
 show global variables like "query_cache_min_res_unit";
 
+#
+# Case sensitive test
+#
+create table t1 (a int not null);
+insert into t1 values (1);
+select "aaa" from t1;
+select "AAA" from t1;
+drop table t1;
+
 #
 # Test of query cache resizing
 #

sql/sql_cache.cc

@@ -1422,10 +1422,10 @@ ulong Query_cache::init_cache()
 
   DUMP(this);
 
-  VOID(hash_init(&queries,system_charset_info,def_query_hash_size, 0, 0,
+  VOID(hash_init(&queries, &my_charset_bin, def_query_hash_size, 0, 0,
 		 query_cache_query_get_key, 0, 0));
 #ifndef FN_NO_CASE_SENCE
-  VOID(hash_init(&tables,system_charset_info,def_table_hash_size, 0, 0,
+  VOID(hash_init(&tables, &my_charset_bin, def_table_hash_size, 0, 0,
 		 query_cache_table_get_key, 0, 0));
 #else
   // windows, OS/2 or other case insensitive file names work around