[英]join two tables where unique id is 0 in other table
我猜你想要表中的所有行。 如果是这样,只需使用left join
:
select *
from media_taxonomy_map as mtm left join
media_taxonomy as mt
on mtm.media_taxonomy_id = mt.media_taxonomy_id;
如果您特别想要 match 或0
,那么您可以过滤:
select *
from media_taxonomy_map as mtm left join
media_taxonomy as mt
on mtm.media_taxonomy_id = mt.media_taxonomy_id
where mtm.media_taxonomy_id = 0 or mt.media_taxonomy_id is not null;
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