Tom Lane wrote:
Quite aside from the compatibility and how-useful-is-it-really
arguments, I think this'd be a bad idea in the abstract. SQL is not one
of those languages that assigns semantic significance to the shape of
whitespace [1]. We should NOT introduce any such concept into psql,
because it'd fundamentally break the lexical structure of the language.
+1
Regards,
Thomas Hallgren
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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
