From 202f34e2f51cc888cecb6d1be683cf01ba3fbf88 Mon Sep 17 00:00:00 2001
From: unknown <svoj@mysql.com/april.(none)>
Date: Fri, 13 Apr 2007 02:31:34 +0500
Subject: [PATCH] BUG#25951 - ignore/use index does not work with fulltext

IGNORE/USE/FORCE INDEX hints were honored when choosing FULLTEXT
index.

With this fix these hints are ignored. For regular indexes we may
perform table scan instead of index lookup when IGNORE INDEX was
specified. We cannot do this for FULLTEXT in NLQ mode.


mysql-test/r/fulltext.result:
  A test case for bug#25951.
mysql-test/t/fulltext.test:
  A test case for bug#25951.
sql/item_func.cc:
  IGNOR/USE/FORCE INDEX hints should not be honored when choosing FULLTEXT
  index.

  Use proper bitmap, that is not modified by IGNORE/USE/FORCE INDEX hints.
---
 mysql-test/r/fulltext.result |  7 +++++++
 mysql-test/t/fulltext.test   | 10 ++++++++++
 sql/item_func.cc             |  2 +-
 3 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/mysql-test/r/fulltext.result b/mysql-test/r/fulltext.result
index c1dd5f80d5c..3700ace4b19 100644
--- a/mysql-test/r/fulltext.result
+++ b/mysql-test/r/fulltext.result
@@ -447,3 +447,10 @@ a	MATCH(a) AGAINST('test1 test')
 test1	0.68526661396027
 DEALLOCATE PREPARE stmt;
 DROP TABLE t1;
+CREATE TABLE t1 (a VARCHAR(255), FULLTEXT(a));
+SELECT * FROM t1 IGNORE INDEX(a) WHERE MATCH(a) AGAINST('test');
+a
+ALTER TABLE t1 DISABLE KEYS;
+SELECT * FROM t1 WHERE MATCH(a) AGAINST('test');
+ERROR HY000: Can't find FULLTEXT index matching the column list
+DROP TABLE t1;
diff --git a/mysql-test/t/fulltext.test b/mysql-test/t/fulltext.test
index d5ce6241490..1a9a6b578dc 100644
--- a/mysql-test/t/fulltext.test
+++ b/mysql-test/t/fulltext.test
@@ -369,4 +369,14 @@ EXECUTE stmt;
 DEALLOCATE PREPARE stmt;
 DROP TABLE t1;
 
+#
+# BUG#25951 - ignore/use index does not work with fulltext
+#
+CREATE TABLE t1 (a VARCHAR(255), FULLTEXT(a));
+SELECT * FROM t1 IGNORE INDEX(a) WHERE MATCH(a) AGAINST('test');
+ALTER TABLE t1 DISABLE KEYS;
+--error 1191
+SELECT * FROM t1 WHERE MATCH(a) AGAINST('test');
+DROP TABLE t1;
+
 # End of 4.1 tests
diff --git a/sql/item_func.cc b/sql/item_func.cc
index 88c3dfcdfc0..c6b2fa5cc3e 100644
--- a/sql/item_func.cc
+++ b/sql/item_func.cc
@@ -3158,7 +3158,7 @@ bool Item_func_match::fix_index()
   for (keynr=0 ; keynr < table->keys ; keynr++)
   {
     if ((table->key_info[keynr].flags & HA_FULLTEXT) &&
-        (table->keys_in_use_for_query.is_set(keynr)))
+        (table->keys_in_use.is_set(keynr)))
     {
       ft_to_key[fts]=keynr;
       ft_cnt[fts]=0;