Posted by Bob Bedford on 09/09/05 10:04

We have no access to a mysql NG on my provider's server, so we ask here:

We have a long query (long in text) with a UNION between 2 select.

We have been informed that some times the query doesn't return any result.
We have tried on our server and we always get a result. BUT, trying on the
hosting server, many times the query doesn't return any result and doesn't
get any error.

Any idea ? does Union have any problem ? how to check if the query failed ?
My hoster said that sometimes the table can be locked (if the server is
overloaded) and then mysql doesn't return any result, but this seems to me
an aberration.

the query takes about 0.0050 sec to execute when it doesn't return any
result, and 0.030 when I get results

Please help !

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