mysql删除主键索引，删除索引语法
### Incorrect table definition; there can be only one auto column and it must be defined as a key ## 更新id列，去掉 AUTO_INCREMENT ALTER TABLE mytest_config_back MODIFY COLUMN `id` INT(11) NOT NULL; ## 删除主键索引 ALTER TABLE 表名 DROP INDEX 索引名称; ALTER TABLE mytest_config_back DROP INDEX `PRIMARY`;
