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Hello! Can I use TZquery without TZupdateSQL? Or I will any problem if I don't use it?

Thanks!!!

Hello,

Of course you can use TZQuery (even for changing field values) but only for simple queries. In case you have a join or such, Zeos will even throw an exception to tell you that it won't work.
Only in those cases you need a TZUpdateSQL to tell Zeos how exactly to assemble your INSERT / UPDATE query.

Ok perfect!
Thanks!