"Kevin Grittner" <[EMAIL PROTECTED]> writes: > Attached is a patch for the documentation. We currently state that we > don't know of any production DBMS which uses predicate locking. Current > versions of at least two commercial products (Sybase ASE and Microsoft > SQL Server) do use it.
Are they actually doing fully-general predicate locks (able to cope with arbitrary predicate conditions), or merely index range locks? I don't mind expanding the docs, but the context of the statement is the cost of doing general predicate locking, and pointing to DBMSes that do a subset case doesn't make that statement invalid. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster