Question

嗨，有人可以看看这个并告诉我哪里出错了。我有一个SQL语句，当我使用php回应时，我将其设为屏幕

INSERT INTO 'moviedb'.'genre' SET 'GenreID' = '18' , 'GenreName' = 'Drama' ON DUPLICATE KEY UPDATE 'GenreName' = 'Drama' WHERE 'GenreID' = '18'
INSERT INTO 'moviedb'.'genre' SET 'GenreID' = '16' , 'GenreName' = 'Animation' ON DUPLICATE KEY UPDATE 'GenreName' = 'Animation' WHERE 'GenreID' = '16'

这是声明

$sql="INSERT INTO 'moviedb'.'genre' SET 'GenreID' = '{$genresID[$i]}' , 'GenreName' = '{$genreName[$i]}' ON DUPLICATE KEY UPDATE 'GenreName' = '{$genreName[$i]}' WHERE 'GenreID' = '{$genresID[$i]}'";

这是我收到的错误：

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 ''moviedb'.'genre' SET 'GenreID' = '18' , 'GenreName' = 'Drama' ON DUPLICATE KEY ' at line 1

非常感谢任何帮助，提前谢谢。

Answer 1

您无法将WHERE与ON DUPLICATE KEY合并。

删除WHERE子句，MySql只会更新导致重复键的行。

对于多行INSERT，使用VALUES()告诉MySql更新要插入的值，例如：

INSERT INTO moviedb.genre (GenreID,GenreName)
VALUES ('18', 'Drama'),
    ('16', 'Animation')
ON DUPLICATE KEY UPDATE
  GenreName = VALUES(GenreName);

Answer 2

您正在引用mysql字段...

你应该使用反引号（`）而不是单引号...单引号用于值，反引号用于字段。

INSERT INTO `moviedb`.`genre` SET `GenreID` = '18' , `GenreName` = 'Drama' ON DUPLICATE KEY UPDATE `GenreName` = VALUES(`GenreName`);
INSERT INTO `moviedb`.`genre` SET `GenreID` = '16' , `GenreName` = 'Animation' ON DUPLICATE KEY UPDATE `GenreName` = VALUES(`GenreName`);

Answer 3

INSERT INTO `moviedb`.`genre` SET `GenreID` = '18' , `GenreName` = 'Drama' ON DUPLICATE KEY UPDATE `GenreName` = 'Drama' WHERE `GenreID` = '18'
INSERT INTO `moviedb`.`genre` SET `GenreID` = '16' , `GenreName` = 'Animation' ON DUPLICATE KEY UPDATE `GenreName` = 'Animation' WHERE `GenreID` = '16'

你已经完成了。

MySQL ON DUPLICATE KEY UPDATE问题

3 个答案: