Jie Liang <[EMAIL PROTECTED]> writes: > the original schema includes another constraint which using a user defined > function to check whether url is validate or not. So are you saying it was just a bug in this user-defined function? Or is there something we need to investigate? regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://www.postgresql.org/search.mpl