[HACKERS] Question about ALTER TABLE SET TABLESPACE locing behaviour

[Hannu Krosing]

Does ALTER TABLE SET TABLESPACE lock the table while copying data to new
location ?

If so, then does it lock the whole table, or just the tuples belonging
to currently copied 1G file ?

----------------
Hannu



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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