Fix bug #13622 Wrong view .frm created if some field's alias contain \n

View .frm parser assumes that query string will take only 1 line, with \n in
aliases query stringmay take several lines thus produces bad .frm file.

'query' parameter type changed from 'string' to 'escaped string'


sql/sql_view.cc:
  Fix bug #13622 \n in column alias results in broken .frm
  'query' parameter type changed to 'escaped string'
mysql-test/r/view.result:
  Test case for bug #13622 Wrong view .frm created if some field's alias contain \n
mysql-test/t/view.test:
  Test case for bug #13622 Wrong view .frm created if some field's alias contain \n

mysql-test/r/view.result

@@ -2323,3 +2323,11 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	3	Using where
 DROP VIEW v1,v2;
 DROP TABLE t1,t2,t3;
+create table t1 (f1 int);
+create view v1 as select t1.f1 as '123
+456' from t1;
+select * from v1;
+123
+456
+drop view v1;
+drop table t1;

mysql-test/t/view.test

@@ -2189,4 +2189,13 @@ EXPLAIN SELECT * FROM v2 WHERE a=1;
 DROP VIEW v1,v2;
 DROP TABLE t1,t2,t3;
 
+#
+# Bug #13622 Wrong view .frm created if some field's alias contain \n
+#
+create table t1 (f1 int);
+create view v1 as select t1.f1 as '123
+456' from t1;
+select * from v1;
+drop view v1;
+drop table t1;
 

sql/sql_view.cc

@@ -496,7 +496,7 @@ static const int num_view_backups= 3;
 static File_option view_parameters[]=
 {{{(char*) STRING_WITH_LEN("query")},
   offsetof(TABLE_LIST, query),
-  FILE_OPTIONS_STRING},
+  FILE_OPTIONS_ESTRING},
  {{(char*) STRING_WITH_LEN("md5")},
   offsetof(TABLE_LIST, md5),
   FILE_OPTIONS_STRING},