从DB2到Netezza的迁移

Question

I have one query in DB2 which has mentioned below. What would be the syntax for the same in NETEZZA?

select distinct acct_num from GTD_demo_dim where ACCT_NUM fetch first 1 rows only);

Answer 1

First, I don't think your statement is valid.

select distinct acct_num from GTD_demo_dim where ACCT_NUM fetch first 1 rows only);

The where clause needs to be finished and you've used a closing parenthesis without an opening one.

fetch first is common (standard?) ODBC syntax, so it's very likely that this will work. However, the usual way to do this in netezza is using a limit. All that said, this is how I'd query and expect the intended result (omitting your where since I can't infer the intent):

select distinct acct_num from gtd_demo_dim limit 1;