不支持ALTER TABLE table_name ADD列。还有其他方法可以向表中添加列吗?
最佳答案
你错了Netezza支持添加列。 《数据库用户指南》的B-19部分对此进行了说明,并介绍了ALTER TABLE语法。
查看nzsql的输出:
LABDB(ADMIN)=> CREATE TABLE REGION2 AS SELECT * FROM REGION;
INSERT 0 4
Elapsed time: 0m0.138s
LABDB(ADMIN)=> ALTER TABLE REGION2 ADD r_col1 char(8);
ALTER TABLE
Elapsed time: 0m0.145s
LABDB(ADMIN)=> SELECT * FROM REGION2;
R_REGIONKEY | R_NAME | R_COMMENT | R_COL1
-------------+---------------------------+-----------------------------+--------
4 | ap | asia pacific |
3 | emea | europe, middle east, africa |
2 | sa | south america |
1 | na | north america |
(4 rows)
Elapsed time: 0m0.510s
LABDB(ADMIN)=> UPDATE REGION2 SET r_col1 = 'AABBAABB';
UPDATE 4
Elapsed time: 0m1.256s
LABDB(ADMIN)=> SELECT * FROM REGION2;
R_REGIONKEY | R_NAME | R_COMMENT | R_COL1
-------------+---------------------------+-----------------------------+----------
1 | na | north america | AABBAABB
3 | emea | europe, middle east, africa | AABBAABB
4 | ap | asia pacific | AABBAABB
2 | sa | south america | AABBAABB
(4 rows)
Elapsed time: 0m0.111s
LABDB(ADMIN)=>
关于netezza - Netezza:如何在表中添加列,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/10791332/