u013573560的博客

问题描述：MySQL新建表或在已有表新增字段时，由于字段使用了多个varchar，其长度过大，而导致出错。Row size too large. The maximum row size for the used table type, not counting BLOBs, is 65535. This includes storage overhead, check the manual. You have to change some columns to TEXT or BLOBs出.

问题描述：用mybatis时，有时不注意容易将sql写错，比如传参为：@Param("updateObjectIds") List<String> updateObjectIdsint deleteByUpdateObjectIds( @Param("groupId") String groupId, @Param("updateObjectIds") List<String> updateObjectIds );对应