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I have the table CREATE TABLE `patient` ( `idPatient` int(10) unsigned NOT NULL auto_increment, `LName` varchar(45) default NULL, `FName` varchar(45) default NULL, `PName` varchar(45) default NULL, `Street` varchar(45) default NULL, `House` int(10) unsigned default NULL, `Building` varchar(3) defaul...

I've selected around 166000 records from Mysql table. If I use TZReadOnlyQuer.Locate(field,fieldvalue,[]) then the method executes 10 minutes or great. And if I use TZQuery then the method execute in a moment. Why?
Delphi 7 and MySQL 4.1