Hi, I'm thinking about, what might be faster on SELECTs: a column with index which is NOT NULL and takes the value of 0 or a column which can take the NULL value instead of 0, also with index. My feeling sais, that 0 and NOT NULL should be a lot more faster, but perhaps it's not true? bye Alvar -- Alvar C.H. Freude | [EMAIL PROTECTED] Demo: http://www.online-demonstration.org/ | Mach mit! Blast-DE: http://www.assoziations-blaster.de/ | Blast-Dich-Fit Blast-EN: http://www.a-blast.org/ | Blast/english