CREATE TABLE t1 ( id INT UNSIGNED AUTO_INCREMENT NOT NULL PRIMARY KEY, a VARCHAR(200), b TEXT ) ENGINE= InnoDB; CREATE FULLTEXT INDEX idx on t1 (a,b); INSERT INTO t1 (a,b) VALUES ('MySQL from Tutorial','DBMS stands for DataBase ...') , ('when To Use MySQL Well','After that you went through a ...'), ('where will Optimizing MySQL','what In this tutorial we will show ...'), ('MySQL from Tutorial','DBMS stands for DataBase ...') , ('when To Use MySQL Well','After that you went through a ...'), ('where will Optimizing MySQL','what In this tutorial we will show ...'), ('MySQL from Tutorial','DBMS stands for DataBase ...') , ('when To Use MySQL Well','After that you went through a ...'), ('where will Optimizing MySQL','what In this tutorial we will show ...'); SET @saved_debug_dbug = @@SESSION.debug_dbug; SET SESSION debug_dbug="+d,fts_instrument_result_cache_limit"; SELECT COUNT(*) FROM t1 WHERE MATCH (a,b) AGAINST ('mysql' IN BOOLEAN MODE); COUNT(*) 9 SELECT COUNT(*) FROM t1 WHERE MATCH (a,b) AGAINST ('mysql' WITH QUERY EXPANSION); ERROR HY000: Table handler out of memory SELECT COUNT(*) FROM t1 WHERE MATCH (a,b) AGAINST ('"mysql database"' IN BOOLEAN MODE); ERROR HY000: Table handler out of memory SELECT COUNT(*) FROM t1 WHERE MATCH (a,b) AGAINST ('"mysql database" @ 5' IN BOOLEAN MODE); ERROR HY000: Table handler out of memory SET SESSION debug_dbug=@saved_debug_dbug; DROP TABLE t1; SET GLOBAL innodb_ft_result_cache_limit=default;