Foreign keys

[Giulio Simeone]

Hello,
when I try to insert a new record in a certain table I get the error

Cannot add or update a child row: a foreign key constraint fails

The table has three foreign keys and six other fields, but this error
appairs with every record I try to insert in the table, even if I
don't give any values to the foreign keys.

What can be the problem?

Thank you in advance!

[Rik]

On Thu, 05 Jul 2007 13:19:18 +0200, Giulio Simeone
<vi************@yahoo.itwrote:

Hello,
when I try to insert a new record in a certain table I get the error

Cannot add or update a child row: a foreign key constraint fails

The table has three foreign keys and six other fields, but this error
appairs with every record I try to insert in the table, even if I
don't give any values to the foreign keys.

What can be the problem?

This is a database question, not PHP, so ask in a database group.

That being said: in MySQL it's only possible to leave a foreign key
'empty' when using NULL, no other values allowed. So the field has to
allow NULL values, and NULL is not the same as 0 or an empty string.

--
Rik Wasmus