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

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