一,问题发生 今天(18/1/18),我在尝试删除一个定义为auto_increment的主键时(所用语句:alter table test drop primary key)结果报了如下错误。 Incorrect table definition; there can be only one auto column and it must be defined as a key 翻译:错误的表定义,一个表只能有一个自增列并且该列必须是主键。
解决SQLSyntaxErrorException: Incorrect table definition; there can be only one auto column and it must be defined as a key异常 问题描述 mysql数据库使用sql建表语句新建一张表,并还有自增的列 Caused by: java.sql.SQLSyntaxErrorException: Incorrect table definition; there can be only one auto column...
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MySQL 错误:there can be only one auto column and it must be defined as a key 原因是你有一个字段A设置了auto_increment,另一个字段B又被设为主键,这是错误的,因为MySQL将自动增长的字段看作主键,因此按照这 样的逻辑,你的表里就有两个主键,所以方法是将B字段的主键索引去掉,如果你的...
Incorrect table definition; there can be only one auto column and it must be defined as a key 不正确的表定义;只能有一个自动列,必须将其定义为键 创建数据库时候: 设为自增的字段必须是主键,而我用的是客户端,表是批量从SQLServer复制到MySQL的,导致最后MySQL表中主键丢失,设置id为主键并设为自增后,...
原主键module_id保留Auto Increment(自增)属性,如下图中的2 执行该操作(即执行如下sql语句),将会报错:ERROR 1075: Incorrect table definition; there can be only one auto column and it must be defined as a key。 ALTER TABLE `AAAAA` DROP PRIMARY KEY, ...
竖栏例:We had stupidly been looking at the wrong column of figures.我们真笨,一直MySQL 错误:there can be only one auto column and it must bedefined as a key原因是你有一个字段A设置了auto_increment,另一个字段B又被设为主键,这是错误的,因为MySQL将自动增长的字段看作主键,因此...
删除主键时,出错:[Err] 1075 - Incorrect table definition; there can be only one auto column and it must be defined as a key altertabletable_namedropprimarykey; # [Err] 1075 这是因为,建表时,该主键设置的是自增属性:即AUTO_INCREMENT
不正确表定义;只能有一个自动栏,它必须被定义为关键 不
SQL 错误 [1075] [42000]: Incorrect table definition; there can be only one auto column and it must be defined as a key 删除自增属性id,且改字段设置为唯一主键时,报上面的错误 解决办法:先去除该字段的自增属性再删除