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Lee R Liddick JrFlag for United States of America asked on

SQL query and if statement

In my where statement I need to check two areas, if the first isn't populated, check the other.

if a.C_EFF_DT is NOT NULL then a.C_EFF_DT < date(current date - 6 months)
if a.C_EFF_DT is NULL then b.C_EFF_DT < date(current date - 6 months)

So basically if the first C_EFF_DT is null then check the second C_EFF_DT, if it has a date, then check it and don't worry about the second date.
DatabasesSQL

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Lee R Liddick Jr

8/22/2022 - Mon
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plusone3055

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David Kroll

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ASKER
Lee R Liddick Jr

I didn't want this in CF...I am doing this in SAS SQL.  The case end in the where statement didn't work.  It doesn't like the less than sign...the query gives an error in the log.
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ASKER
Lee R Liddick Jr

I've requested that this question be closed as follows:

Accepted answer: 0 points for leerljr68's comment #a39901107

for the following reason:

Accepting own comment since I figured it out myself with no assistance from the other expert comments.  Thank you.
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ASKER
Lee R Liddick Jr

I'm awarding points to those who responded.
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rwheeler23
ASKER
Lee R Liddick Jr

Even though I answered my own question, I'm awarding points for taking the time to respond.  Thank you all.