如何从MySQL表中删除列 - Code

给定使用以下方法创建的表:

CREATE TABLE tbl_Country
(
  CountryId INT NOT NULL AUTO_INCREMENT,
  IsDeleted bit,
  PRIMARY KEY (CountryId) 
)

如何删除IsDeleted列?

当前回答

ALTER TABLE `tablename` DROP `columnname`;

Or,

ALTER TABLE `tablename` DROP COLUMN `columnname`;

2012-12-20 09:06:51

其他回答

使用ALTER TABLE和DROP COLUMN从表中删除列，使用CHANGE或MODIFY更改列。

ALTER TABLE tbl_Country DROP COLUMN IsDeleted;
ALTER TABLE tbl_Country MODIFY IsDeleted tinyint(1) NOT NULL;
ALTER TABLE tbl_Country CHANGE IsDeleted IsDeleted tinyint(1) NOT NULL;

2012-12-20 09:08:28

你可以使用

alter table <tblname> drop column <colname>

2012-12-20 09:07:29

ALTER TABLE `tablename` DROP `columnname`;

Or,

ALTER TABLE `tablename` DROP COLUMN `columnname`;

2012-12-20 09:06:51

使用改变:

ALTER TABLE `tbl_Country` DROP COLUMN `column_name`;

2012-12-20 09:06:38

ALTER TABLE tbl_Country DROP columnName;

2012-12-20 09:06:23

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