Need to find and delete duplicate records in Netezza

Question

I need a netezza query to delete exact duplicate records and keep only unique records. with how many ways we can delete duplicates in netezza.

Thanks in advance. RG

Answer 1

这可能是至少软化的解决方案：

Create table X as select distinct * from YOURTABLE
;

----确保X看起来像你期望的那样----

Truncate table YOURTABLE
;
Insert into YOURTABLE select * from X
;

您可以选择将表格X创建为“临时”，但如果您不能100％确定自己在做什么，则丢失数据的风险可能会更高......