Some key in the table is null when it shouldnt be, or the type of the join
keys isnt the same. i have had issues when importing data from a dump so
i've had to do a FORIEGN_KEY_CHECKS=0
>
> So I have made a table called 'uid' where on uid is the only field in
> the table.  Then I make another table called 'users' where there are
> two  fields, 'uid1' and 'uid2' and both uid values have foreign key
> constraints referencing the 'uid' field in the uid table.
>
> No problem, tables are created and are all empty.
>
> Then I try inserting a uid varchar value of 'test' into the uid
> table...
>
> ok works,
>
> Then I try inserting a uid1 and uid2 varchar value of 'test' into the
> users table...
>
> I get a foreign key constraint error or 1216:
>
>  #<MysqlError: Cannot add or update a child row: a foreign key
> constraint fails>
> 1216
>
>
> Does anyone know what I am doing wrong?
>
> Thanks,
> -Cere
>
>
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