重命名DB2中的列 [英] Rename column in DB2

问题描述

我正在尝试在一个已经存在数据的表中重命名一列.但是下面是它抛出的错误.请咨询.

I am trying to rename a column in one table where data already exists. But below is the error it is throwing.Please advice.

我尝试过的语法

ALTER TABLE TPR.PRODUCT_FEATURE RENAME COLUMN PRODUCT_ID TO SERVICE_ID

错误:

[错误]脚本行:23-23 ------------------------无法处理对象类型"COLUMN"上的DROP，ALTER，TRANSFER OWNERSHIP，REVOKE或CREATE或REPLACE，因为存在依赖于该对象的类型"PRIMARY KEY"的对象"PRODUCT_FEATURE_X01".SQLCODE = -478，SQLSTATE= 42893，驾驶员= 3.67.28

[Error] Script lines: 23-23 ------------------------ DROP, ALTER, TRANSFER OWNERSHIP, REVOKE, or CREATE OR REPLACE on object type "COLUMN" cannot be processed because there is an object "PRODUCT_FEATURE_X01", of type "PRIMARY KEY", which depends on it.. SQLCODE=-478, SQLSTATE=42893, DRIVER=3.67.28

请看一下，我需要删除并重新创建是唯一的选择.请指教.

Looks me to, I need to drop and recreate is the only option. Please advice.

推荐答案

删除约束:

ALTER TABLE TPR.PRODUCT_FEATURE 
    DROP CONSTRAINT PRODUCT_FEATURE_X01

然后更改表格:

ALTER TABLE TPR.PRODUCT_FEATURE RENAME COLUMN PRODUCT_ID TO SERVICE_ID

然后添加新约束:

ALTER TABLE TPR.PRODUCT_FEATURE
      ADD CONSTRAINT PRODUCT_FEATURE_X01
      PRIMARY KEY (insert,columns,here)

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