Is there a way to do this? Im trying to LEFT JOIN to a table that needs to
select based on 2 keys, but the query Im writing only has the keys
individually in two separate tables, like this.
The documentation shows how to do this when you are using 2 keys from both
tables, but not 1 key from 1
Not sure if this is what you are asking, but how about:
SELECT *
FROM t1 LEFT JOIN t2 ON t1.c1 = t2.c2
Big Brother tells me that David Perron wrote:
Is there a way to do this? Im trying to LEFT JOIN to a table that needs to
select based on 2 keys, but the query Im writing only has the
It's tough to answer your question without seeing your actual table
structure. You can use AND in a join:
SELECT * FROM a1 LEFT JOIN b1 ON a1.f1=b1.f1 AND a1.f2=b1.f2
In you example query, MySQL will try to do the LEFT JOIN first (I'm
pretty sure), which is not what you what. But if you change
