Hi,
Joost Kraaijeveld wrote:
Does PostgreSQL lock the entire row in a table if I update only 1
column?
Yes. In PostgreSQL, an update is much like a delete + insert. A
concurrent transaction will still see the old row. Thus the lock only
prevents other writing transactions, not readers.
Regards
Markus
P.S.: please do not cross post such questions.
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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
