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From: PG Bug reporting form <noreply@postgresql.org>
To: pgsql-bugs@lists.postgresql.org
Cc: jounts@gmail.com
Subject: BUG #17762: date field casts to null in case section with join's
Date: Fri, 27 Jan 2023 12:21:11 +0000
Message-ID: <17762-1a82488048c89e3c@postgresql.org> (raw)

The following bug has been logged on the website:

Bug reference:      17762
Logged by:          Evgeny Nee
Email address:      jounts@gmail.com
PostgreSQL version: 15.1
Operating system:   debian 11
Description:        

Query works fine:
SELECT id, 
CASE
    WHEN date_field IS NOT NULL THEN date_field::TEXT
END AS date_str
FROM my_table

But this query:
SELECT t1id, t2.name, 
CASE
    WHEN t1.date_field IS NOT NULL THEN t1.date_field::TEXT
END AS date_str
FROM my_table t1
JOIN my_table2 t2 ON t1.id = t2.id

returns: null in date_str



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