There is a note in 8.3 doc which explain why my company application is broken after I upgraded Postgresql from 8.1 to 8.3.
Is there an easy way of altering 8.3 version to behave like 8.1? For example: now with 8.3 when I pass data type to the substr function as first argument then I get an error. 8.1 version silently converted data value to string value.
The application is too big and implicit conversion wound solve the problem.