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02.19.2008 at 12:30PM PST, ID: 23175592
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SQL query where columns of two tables do not match?

Tags: PostGreSQL, SQL
I am looking for a simple PostgreSQL query to show which rows that have fields in one table that are not found in another table.

select * from
(
select fieldA from schema1.table1
union all
select fieldB from schema1.table2

) tmp

I do not know how to use the group and count operators to extract only the rows where the fieldA and fieldB do not match.
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Question Stats
Zone: Database
Question Asked By: HawNets
Solution Provided By: ee_rlee
Participating Experts: 3
Solution Grade: B
Views: 37
Translate:
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02.20.2008 at 02:54AM PST, ID: 20936536

Rank: Master

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02.20.2008 at 04:20AM PST, ID: 20937052

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02.23.2008 at 05:38AM PST, ID: 20964863

Rank: Wizard

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