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Re: Return LEFT JOINed tables when one has no matching column

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Harald Fuchs wrote:
In article <4A425379.90907@xxxxxxxxxxx>,
Madison Kelly <linux@xxxxxxxxxxx> writes:

SELECT
	a.tbl1_name,
	b.tbl2_date,
	c.tbl3_value AS some_value
FROM
	table_1 a
LEFT JOIN
	table_2 b ON (a.tbl1_id=b.tbl2_tbl1_id)
LEFT JOIN
	table_3 c ON (a.tbl1_id=c.tbl3_tbl1_id)
WHERE
	c.tbl3_variable='some_variable'
AND
	a.tbl1_id=123;

  I want the data from table_1 and table_2 to return and table_3 to
return NULL when there is no matching
c.tbl3_variable='some_variable'. Is this possible?

Move "c.tbl3_variable='some_variable'" from WHERE to c's ON clause.

Bingo, thank you!

Madi

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