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fixed query cache with system database

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FN_NO_CASE_SENCE used instead of __WIN__ in table name handling of quary cache
This commit is contained in:
bell@sanja.is.com.ua 2002-10-08 00:26:15 +03:00
parent 33c27caeb5
commit 8d252004dc
3 changed files with 41 additions and 5 deletions
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10
mysql-test/r/query_cache.result
View file

@ -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

14
mysql-test/t/query_cache.test
View file

@ -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";

22
sql/sql_cache.cc
View file

@ -342,6 +342,12 @@ TODO list:
#define DUMP(C)
#endif
#ifdef FN_NO_CASE_SENCE
#define DB_NAME_PREPROCESS(C) tolower(C)
#else
#define DB_NAME_PREPROCESS(C) (C)
#endif
const char *query_cache_type_names[]= { "OFF", "ON", "DEMAND",NullS };
TYPELIB query_cache_type_typelib=
{
@ -1378,11 +1384,11 @@ ulong Query_cache::init_cache()
VOID(hash_init(&queries,def_query_hash_size, 0, 0,
query_cache_query_get_key, 0, 0));
#ifndef __WIN__
#ifndef FN_NO_CASE_SENCE
VOID(hash_init(&tables,def_table_hash_size, 0, 0,
query_cache_table_get_key, 0, 0));
#else
// windows case insensitive file names work around
// windows, OS/2 or other case insensitive file names work around
VOID(hash_init(&tables,def_table_hash_size, 0, 0,
query_cache_table_get_key, 0,
(lower_case_table_names?0:HASH_CASE_INSENSITIVE)));
@ -2432,7 +2438,7 @@ TABLE_COUNTER_TYPE Query_cache::is_cacheable(THD *thd, uint32 query_len,
lex->select->options,
(int) thd->variables.query_cache_type));
for (; tables_used; tables_used=tables_used->next)
for (; tables_used; tables_used= tables_used->next)
{
tables++;
DBUG_PRINT("qcache", ("table %s, db %s, type %u",
@ -2442,10 +2448,16 @@ TABLE_COUNTER_TYPE Query_cache::is_cacheable(THD *thd, uint32 query_len,
tables_used->table->file->has_transactions());
if (tables_used->table->db_type == DB_TYPE_MRG_ISAM ||
tables_used->table->tmp_table != NO_TMP_TABLE)
tables_used->table->tmp_table != NO_TMP_TABLE ||
(tables_used->db_length == 5 &&
DB_NAME_PREPROCESS(tables_used->db[0])=='m' &&
DB_NAME_PREPROCESS(tables_used->db[1])=='y' &&
DB_NAME_PREPROCESS(tables_used->db[2])=='s' &&
DB_NAME_PREPROCESS(tables_used->db[3])=='q' &&
DB_NAME_PREPROCESS(tables_used->db[4])=='l'))
{
DBUG_PRINT("qcache",
("select not cacheable: used MRG_ISAM or temporary table(s)"));
("select not cacheable: used MRG_ISAM, temporary or system table(s)"));
DBUG_RETURN(0);
}
if (tables_used->table->db_type == DB_TYPE_MRG_MYISAM)