DB2 Rename

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db2修改表名

db2 在修改表名的时候，表上不能有外键约束，不能被视图引用。。。。。。。。。

--例子

RENAME TABLE TPA_AVMACCOUNTTO TCASH_AVMACCOUNT ;

RENAME TABLE TPA_BOMACCOUNT TO TCASH_BOMACCOUNT ;

RENAME TABLE TPA_CSCTICKET TO TCASH_CSCTICKET ;

RENAME TABLE TPA_HEADINFO TO TCASH_HEADINFO ;

--db2 报了一大堆错误（刚开始有点怕怕的）

在发出 RENAME 语句之前，删除依赖于此表的视图、具体化查询表、触发器、SQL

函数、SQL 方法、检查约束、引用约束或 XSR 对象。对于依赖于此表的视图或具

体化查询表，请查询 SYSCAT.VIEWDEP 并使表与 BSCHEMA 和 BNAME 列匹配。对

于依赖于此表的触发器，请查询 SYSCAT.TRIGDEP 并使表与 BSCHEMA 和 BNAME

列匹配。对于 SQL 函数或 SQL 方法，请查询 SYSCAT.FUNCDEP 并使表与 BSCHEMA

和 BNAME 列匹配。对于表的检查约束，请查询 SYSCAT.CHECKS 并使表与

TABSCHEMA 和 TABBNAME 列匹配。对于依赖于此表的引用约束，请查询

SYSCAT.REFERENCES 并使表与 TABSCHEMA 和 TABNAME 列或者 REFTABSCHEMA 和

REFTABNAME 列匹配。对于为了进行将此表作为目标的分解而启用的 XSR 对象，

请查询 SYSCAT.XSROBJECTDEP 并使表与 BSCHEMA 和 BNAME 列匹配。

--看来限制条件真多，根据错误提示，查看对象的依赖性

select * from SYSCAT.VIEWDEP where bschema='L_SZ_V16' AND BNAME IN('TPA_AVMACCOUNT','TPA_BOMACCOUNT','TPA_CSCTICKET','TPA_HEADINFO');

select * from SYSCAT.TRIGDEP where bschema='L_SZ_V16' AND BNAME IN('TPA_AVMACCOUNT','TPA_BOMACCOUNT','TPA_CSCTICKET','TPA_HEADINFO');

select * from SYSCAT.FUNCDEP where bschema='L_SZ_V16' AND BNAME IN('TPA_AVMACCOUNT','TPA_BOMACCOUNT','TPA_CSCTICKET','TPA_HEADINFO');

SELECT * FROM SYSCAT.CHECKS WHERE TABSCHEMA='L_SZ_V16' AND TABNAME IN('TPA_AVMACCOUNT','TPA_BOMACCOUNT','TPA_CSCTICKET','TPA_HEADINFO');

SELECT * FROM SYSCAT.REFERENCES WHERE TABSCHEMA='L_SZ_V16' AND TABNAME IN('TPA_AVMACCOUNT','TPA_BOMACCOUNT','TPA_CSCTICKET','TPA_HEADINFO');

SELECT * FROM SYSCAT.REFERENCES WHERE REFTABSCHEMA='L_SZ_V16' AND REFTABNAME IN('TPA_AVMACCOUNT','TPA_BOMACCOUNT','TPA_CSCTICKET','TPA_HEADINFO');

SELECT * FROM SYSCAT.XSROBJECTDEP WHERE bschema='L_SZ_V16' AND BNAME IN('TPA_AVMACCOUNT','TPA_BOMACCOUNT','TPA_CSCTICKET','TPA_HEADINFO');

查看后，发现表上有外键约束，其他的都没有

--执行删除外键的sql

ALTER TABLE TPA_AVMACCOUNT DROP FOREIGN KEY FK57641F8FB2FBC862; ALTER TABLE TPA_CSCTICKET DROP FOREIGN KEY FK3505A84597A0F542;

COMMIT;

RENAME TABLE TPA_AVMACCOUNT TO TCASH_AVMACCOUNT ; RENAME TABLE TPA_BOMACCOUNT TO TCASH_BOMACCOUNT ; RENAME TABLE TPA_CSCTICKET TO TCASH_CSCTICKET ; RENAME TABLE TPA_HEADINFO TO TCASH_HEADINFO ;

COMMIT;

--执行创建外键的sql，表名TPA_开头的都修改为 TCASH开头，然后执行。

ALTER TABLE TCASH_CSCTICKET ADD CONSTRAINT FK3505A84597A0F542 FOREIGN KEY (BOMACCOUNT_RECORDID) REFERENCES TCASH_BOMACCOUNT(RECORDID) ON DELETE CASCADE ON UPDATE RESTRICT ENFORCED ENABLE QUERY OPTIMIZATION; ALTER TABLE TCASH_AVMACCOUNT ADD CONSTRAINT FK57641F8FB2FBC862 FOREIGN KEY (HEADINFO_RECORDID) REFERENCES TCASH_HEADINFO(RECORDID) ON DELETE CASCADE ON UPDATE RESTRICT ENFORCED ENABLE QUERY OPTIMIZATION; COMMIT;