Just wanted to put a short thank you note in here. I've been using PostgreSQL for a while, but only using basic SQL. The information in this thread pointed me to the information that I needed to read about to solve a problem which has been tormenting me, off and on, for a couple of months. I just couldn't solve the problem with ANSI standard SQL. But finally did with an array of my own composite data type. This allowed me to _easily_ find and report on some things which should have been identically defined on multiple systems, but were not.
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As of next week, passwords will be entered in Morse code.
Maranatha! <><
John McKown