我正在尝试使用我找到的mysql函数,但我似乎遇到了一些错误。这是功能:
SET GLOBAL log_bin_trust_function_creators=1;
DROP FUNCTION IF EXISTS digits;
DELIMITER $$
CREATE FUNCTION digits( str CHAR(32) ) RETURNS CHAR(32)
BEGIN
DECLARE i, len SMALLINT DEFAULT 1;
DECLARE ret CHAR(32) DEFAULT '';
DECLARE c CHAR(1);
SET len = CHAR_LENGTH( str );
REPEAT
BEGIN
SET c = MID( str, i, 1 );
IF c BETWEEN '0' AND '9' THEN
SET ret=CONCAT(ret,c);
END IF;
SET i = i + 1;
END ;
UNTIL i > len END REPEAT;
RETURN ret;
END
$$
DELIMITER ;
SELECT digits('123ab45cde6789fg');
我正在使用Mariadb 5.5
Server version: 5.5.50-MariaDB MariaDB Server
以下是我看到的错误:
[Err] 1064 - 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 '$$
DELIMITER ;
我尝试了一些建议,例如更改最初是管道的分隔符。然而,将分隔符从END
旁边移动到我已经完成的下面,但两者中似乎都发生了错误。
我已经尝试过修改错误的基本修改,但它仍然会发生,似乎在删除此部分时我不再收到任何错误,但结果不正确。
REPEAT
BEGIN
SET c = MID( str, i, 1 );
IF c BETWEEN '0' AND '9' THEN
SET ret=CONCAT(ret,c);
END IF;
SET i = i + 1;
END ;
UNTIL i > len END REPEAT;
任何指针都会很棒。
更新
我测试过其他一些版本并遇到同样的问题。我目前正在使用Navicat。
Server version: 5.5.50-MariaDB MariaDB Server
Server version: 5.5.31-0ubuntu0.12.10.1 (Ubuntu)
Server version: 5.1.73 Source distribution
Server version: 5.5.52-MariaDB MariaDB Server
答案 0 :(得分:0)
我无法重现这个问题:
MariaDB [_]> SELECT VERSION();
+----------------+
| VERSION() |
+----------------+
| 5.5.56-MariaDB |
+----------------+
1 row in set (0.00 sec)
MariaDB [_]> SET GLOBAL log_bin_trust_function_creators=1;
Query OK, 0 rows affected (0.00 sec)
MariaDB [_]> DROP FUNCTION IF EXISTS digits;
Query OK, 0 rows affected (0.00 sec)
MariaDB [_]> DELIMITER $$
MariaDB [_]> CREATE FUNCTION digits( str CHAR(32) )
-> RETURNS CHAR(32)
-> BEGIN
-> DECLARE i, len SMALLINT DEFAULT 1;
-> DECLARE ret CHAR(32) DEFAULT '';
-> DECLARE c CHAR(1);
-> SET len = CHAR_LENGTH( str );
-> REPEAT
-> BEGIN
-> SET c = MID( str, i, 1 );
-> IF c BETWEEN '0' AND '9' THEN
-> SET ret=CONCAT(ret,c);
-> END IF;
-> SET i = i + 1;
-> END;
-> UNTIL i > len END REPEAT;
-> RETURN ret;
-> END$$
Query OK, 0 rows affected (0.00 sec)
MariaDB [_]> DELIMITER ;
MariaDB [_]> SELECT digits('123ab45cde6789fg');
+----------------------------+
| digits('123ab45cde6789fg') |
+----------------------------+
| 123456789 |
+----------------------------+
1 row in set (0.00 sec)