MySQL程序不工作（更正）

我需要获取与正则表达式匹配的所有表名，并对给定的值执行更新查询，为此，我创建了以下MySQL过程，但MySQL告诉我，第3行有一个错误

我有以下MySql过程：

CREATE PROCEDURE example()
BEGIN
    DECLARE bdone INT;
    DECLARE var1 VARCHAR(250);
    DECLARE curs CURSOR FOR  SHOW tables like '%contenidos_extra%';
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET bDone = 1;
    OPEN curs;
    SET bdone = 0;
    REPEAT
        FETCH curs INTO var1,, b;
        UPDATE var1 SET `valor`='modified' WHERE nombre = 'prueba';
    UNTIL bdone END REPEAT;
    CLOSE curs;
END

delimiter //

CREATE PROCEDURE example()
BEGIN
    DECLARE bdone INT;
    DECLARE var1 VARCHAR(250);
    DECLARE curs CURSOR FOR  select table_name from information_schema.tables where table_name like '%contenidos_extra%';
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET bDone = 1;
    OPEN curs;
    SET bdone = 0;
    REPEAT
        FETCH curs INTO var1;
        UPDATE var1 SET `valor`='modified' WHERE nombre = 'prueba';
    UNTIL bdone END REPEAT;
    CLOSE curs;
END
//

delimiter ;

mysql告诉我这个错误：

#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 3 

---

在编写过程之前，需要更改分隔符：

CREATE PROCEDURE example()
BEGIN
    DECLARE bdone INT;
    DECLARE var1 VARCHAR(250);
    DECLARE curs CURSOR FOR  SHOW tables like '%contenidos_extra%';
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET bDone = 1;
    OPEN curs;
    SET bdone = 0;
    REPEAT
        FETCH curs INTO var1,, b;
        UPDATE var1 SET `valor`='modified' WHERE nombre = 'prueba';
    UNTIL bdone END REPEAT;
    CLOSE curs;
END

delimiter //

CREATE PROCEDURE example()
BEGIN
    DECLARE bdone INT;
    DECLARE var1 VARCHAR(250);
    DECLARE curs CURSOR FOR  select table_name from information_schema.tables where table_name like '%contenidos_extra%';
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET bDone = 1;
    OPEN curs;
    SET bdone = 0;
    REPEAT
        FETCH curs INTO var1;
        UPDATE var1 SET `valor`='modified' WHERE nombre = 'prueba';
    UNTIL bdone END REPEAT;
    CLOSE curs;
END
//

delimiter ;

注意：不能在过程中使用

显示表格

请看这里：

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我刚刚重读了这段代码，意识到您还有另一个问题。您需要使用动态SQL执行更新，因为您不能在变量中指定表名。必须为此使用动态SQL语句：

---

您的过程似乎没有任何正则表达式。您的

like

子句使用通配符匹配，而不是正则表达式。很抱歉，MySQL应该告诉您错误是什么。。在提问时，重要的是要包括给你的错误信息。值得将其编辑到您的问题中。mysql告诉我：您的SQL语法有错误；检查与MySQL服务器版本对应的手册，以获取第3行“”附近要使用的正确语法