From df84c534ddea900333b77d3537cfa55f9e7b99b7 Mon Sep 17 00:00:00 2001
From: "jimw@mysql.com" <>
Date: Mon, 7 Mar 2005 18:15:19 -0800
Subject: [PATCH] Flush entries from the query cache for tables used in
 administrative statements that may alter the table, such as REPAIR TABLE.
 (Bug #8480)

---
 mysql-test/r/query_cache.result | 20 ++++++++++++++++++++
 mysql-test/t/query_cache.test   | 12 ++++++++++++
 sql/sql_table.cc                |  4 +++-
 3 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/mysql-test/r/query_cache.result b/mysql-test/r/query_cache.result
index 85fe77b1f10..af86f67f8c3 100644
--- a/mysql-test/r/query_cache.result
+++ b/mysql-test/r/query_cache.result
@@ -717,4 +717,24 @@ select * from t1;
 a
 drop table t1;
 drop table t1;
+set global query_cache_size=1024*1024;
+flush query cache;
+create table t1 ( a int );
+insert into t1 values (1);
+select a from t1;
+a
+1
+select a from t1;
+a
+1
+show status like 'qcache_queries_in_cache';
+Variable_name	Value
+Qcache_queries_in_cache	1
+repair table t1;
+Table	Op	Msg_type	Msg_text
+test.t1	repair	status	OK
+show status like 'qcache_queries_in_cache';
+Variable_name	Value
+Qcache_queries_in_cache	0
+drop table t1;
 set GLOBAL query_cache_size=0;
diff --git a/mysql-test/t/query_cache.test b/mysql-test/t/query_cache.test
index 61fbadde1e1..35eefececf3 100644
--- a/mysql-test/t/query_cache.test
+++ b/mysql-test/t/query_cache.test
@@ -533,4 +533,16 @@ select * from t1;
 drop table t1;
 drop table t1;
 
+# Bug #8480: REPAIR TABLE needs to flush the table from the query cache
+set global query_cache_size=1024*1024;
+flush query cache;
+create table t1 ( a int );
+insert into t1 values (1);
+select a from t1;
+select a from t1;
+show status like 'qcache_queries_in_cache';
+repair table t1;
+show status like 'qcache_queries_in_cache';
+drop table t1;
+
 set GLOBAL query_cache_size=0;
diff --git a/sql/sql_table.cc b/sql/sql_table.cc
index 33bdd992efb..20d9b1dcb7d 100644
--- a/sql/sql_table.cc
+++ b/sql/sql_table.cc
@@ -1318,7 +1318,9 @@ static int mysql_admin_table(THD* thd, TABLE_LIST* tables,
       thd->exit_cond(old_message);
       if (thd->killed)
 	goto err;
-      open_for_modify=0;
+      /* Flush entries in the query cache involving this table. */
+      query_cache_invalidate3(thd, table->table, 0);
+      open_for_modify= 0;
     }
 
     int result_code = (table->table->file->*operator_func)(thd, check_opt);