Re: SQL join, limit to one row per employee -- MIDRANGE-L

Subject: Re: SQL join, limit to one row per employee
From: cesco <emaxt6@xxxxxxxxx>
Date: Tue, 13 May 2025 15:26:28 +0000 (UTC)
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I have an SQL doing an inner join between two tables.
The results have two rows for some employees, due to one table having two 'active' rows for that employee.
How can I write my SQL to only have one row for that employee?

Whenever you have this situation, you can
- use WITH to construct a testable CTE with the desired cardinality, desidered row filtering, that you then join to
- or if more idiomatic use a LATERAL (basically with LATERAL you can have native I/O CHAIN like results... i.e pick the first record etc.).

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Follow-Ups:

Re: SQL join, limit to one row per employee , K Crawford

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