RE: finding differences between data sets ...
To merge 2 tables into a distinct (no dups) resultset, use UNION: SELECT MyField1, MyField2 FROM MyTable1 UNION SELECT MyField1, MyField2 FROM MyTable2 To see if a set of columns is NOTin another table, there are numerous ways: SELECT * FROM MyTable2 t2 WHERE NOT EXISTS ( SELECT MyField1, MyField2 FROM MyTable1 t1 WHERE t1.MyField1 […]
2003-08-22