MDEV-11275 sql_mode=ORACLE: CAST(..AS VARCHAR(N))

mysql-test/suite/compat/oracle/r/type_varchar.result

+SET sql_mode=ORACLE;
+#
+#  MDEV-11275 sql_mode=ORACLE: CAST(..AS VARCHAR(N))
+#
+SELECT CAST(123 AS VARCHAR(10)) FROM DUAL;
+CAST(123 AS VARCHAR(10))
+123
+SELECT CAST(123 AS VARCHAR) FROM DUAL;
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ') FROM DUAL' at line 1

mysql-test/suite/compat/oracle/r/type_varchar2.result

@@ -13,3 +13,11 @@ t1	CREATE TABLE "t1" (
   "a" varchar(10) DEFAULT NULL
 )
 DROP TABLE t1;
+#
+#  MDEV-11275 sql_mode=ORACLE: CAST(..AS VARCHAR(N))
+#
+SELECT CAST(123 AS VARCHAR2(10)) FROM DUAL;
+CAST(123 AS VARCHAR2(10))
+123
+SELECT CAST(123 AS VARCHAR2) FROM DUAL;
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ') FROM DUAL' at line 1

mysql-test/suite/compat/oracle/t/type_varchar.test

+SET sql_mode=ORACLE;
+
+--echo #
+--echo #  MDEV-11275 sql_mode=ORACLE: CAST(..AS VARCHAR(N))
+--echo #
+
+SELECT CAST(123 AS VARCHAR(10)) FROM DUAL;
+--error ER_PARSE_ERROR
+SELECT CAST(123 AS VARCHAR) FROM DUAL;

mysql-test/suite/compat/oracle/t/type_varchar2.test

@@ -8,3 +8,12 @@ DROP TABLE varchar2;
 CREATE TABLE t1 (a VARCHAR2(10));
 SHOW CREATE TABLE t1;
 DROP TABLE t1;
+
+
+--echo #
+--echo #  MDEV-11275 sql_mode=ORACLE: CAST(..AS VARCHAR(N))
+--echo #
+
+SELECT CAST(123 AS VARCHAR2(10)) FROM DUAL;
+--error ER_PARSE_ERROR
+SELECT CAST(123 AS VARCHAR2) FROM DUAL;

sql/sql_yacc_ora.yy

@@ -10314,6 +10314,14 @@ cast_type:
           { Lex->charset= thd->variables.collation_connection; }
           opt_binary
           { $$.set(ITEM_CAST_CHAR, $2); }
+        | VARCHAR field_length
+          { Lex->charset= thd->variables.collation_connection; }
+          opt_binary
+          { $$.set(ITEM_CAST_CHAR, $2); }
+        | VARCHAR2 field_length
+          { Lex->charset= thd->variables.collation_connection; }
+          opt_binary
+          { $$.set(ITEM_CAST_CHAR, $2); }
         | NCHAR_SYM opt_field_length
           {
             Lex->charset= national_charset_info;