do not allow to cache queries with INTO clause

mysql-test/r/query_cache.result:
  INTO OUTFILE/DUMPFILE test
mysql-test/t/query_cache.test:
  INTO OUTFILE/DUMPFILE test

mysql-test/r/query_cache.result

@@ -564,3 +564,15 @@ show status like "Qcache_queries_in_cache";
 Variable_name	Value
 Qcache_queries_in_cache	0
 drop table t1;
+drop table if exists t1;
+create table t1 (a int);
+insert into t1 values (1),(2),(3);
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	0
+select * from t1 into outfile "query_caceh.out.file";
+select * from t1 limit 1 into dumpfile "query_cache.dump.file";
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	0
+drop table t1;

mysql-test/t/query_cache.test

@@ -406,4 +406,17 @@ select * from t1;
 show status like "Qcache_queries_in_cache";
 load data infile '../../std_data/words.dat' into table t1;
 show status like "Qcache_queries_in_cache";
+drop table t1;
+
+#
+# INTO OUTFILE/DUMPFILE test
+#
+
+drop table if exists t1;
+create table t1 (a int);
+insert into t1 values (1),(2),(3);
+show status like "Qcache_queries_in_cache";
+select * from t1 into outfile "query_caceh.out.file";
+select * from t1 limit 1 into dumpfile "query_cache.dump.file";
+show status like "Qcache_queries_in_cache";
 drop table t1;
\ No newline at end of file

sql/sql_yacc.yy

@@ -2448,13 +2448,17 @@ procedure_item:
 opt_into:
 	INTO OUTFILE TEXT_STRING
 	{
-	  if (!(Lex->exchange= new sql_exchange($3.str,0)))
+	  THD *thd= current_thd;
+	  thd->safe_to_cache_query= 0; 
+	  if (!(thd->lex.exchange= new sql_exchange($3.str,0)))
 	    YYABORT;
 	}
 	opt_field_term opt_line_term
 	| INTO DUMPFILE TEXT_STRING
 	{
-	  if (!(Lex->exchange= new sql_exchange($3.str,1)))
+	  THD *thd= current_thd;
+	  thd->safe_to_cache_query= 0;
+	  if (!(thd->lex.exchange= new sql_exchange($3.str,1)))
 	    YYABORT;
 	};