我有这个sql文件：

USE mydb;

DROP PROCEDURE IF EXISTS execSql;
DELIMITER //
CREATE PROCEDURE execSql (
                     IN sqlq VARCHAR(5000)
                      ) COMMENT 'Executes the statement'
BEGIN
  PREPARE stmt FROM sqlq;
  EXECUTE stmt;
  DEALLOCATE PREPARE stmt;
END //
DELIMITER ;          

当我尝试运行它时

#cat file.sql | mysql -p

我明白了

ERROR 1064 (42000) at line 6: 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 'sqlq;
  EXECUTE stmt;
  DEALLOCATE PREPARE stmt;
  END' at line 5

我究竟做错了什么？

解决方法:

您只能准备和执行sql,它是一个字符串文字或包含该语句文本的用户变量.尝试

USE mydb;

DROP PROCEDURE IF EXISTS execSql;
DELIMITER //
CREATE PROCEDURE execSql (
                 IN sqlq VARCHAR(5000)
                  ) COMMENT 'Executes the statement'
BEGIN
  SET @sqlv=sqlq;
  PREPARE stmt FROM @sqlv;
  EXECUTE stmt;
  DEALLOCATE PREPARE stmt;
END //
DELIMITER ;