"Mauricio Fernandez A." <[EMAIL PROTECTED]> writes: > The only strange thing in the query is that ac.potencialpacientes is > smallint[] (in fact is the only thing with sense I can see in the error > message) but I am not using the '<' operator as it suggest.
No, but you're trying to GROUP BY ac.potencialpacientes, and in 7.3 the only way to do grouping is sort/unique. So you have to be able to sort the datatype, and 7.3 doesn't have code to do comparison of arrays. > Can somebody help me?. Upgrade. 7.3 is pretty ancient anyway. Quite aside from lack of features, its performance is poor compared to 8.1. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match