I'm having a problem with some row locks where one user does the lock
and another user try to do the same, but of course, the second one will
be waiting the first user unlock it.
I would like to know if there is a way to discover if that row is locked
before I try to do the lock.
I have been researching something like ROWID but I couldn't find
anything useful.
Thank's
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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
