in reply to Implementing named infix operators with parser hook?

Don't know if it helps but you can overload all keywords, functions and operators in Postgresql, and have them call a perl subroutine instead, e.g for something like BETWEEN (doc snippet:) 
CREATE OPERATOR name (
    PROCEDURE = function_name
    [, LEFTARG = left_type ] [, RIGHTARG = right_type ]
    [, COMMUTATOR = com_op ] [, NEGATOR = neg_op ]
    [, RESTRICT = res_proc ] [, JOIN = join_proc ]
    [, HASHES ] [, MERGES ]
)

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Re^2: Implementing named infix operators with parser hook?
by LanX (Saint) on Aug 17, 2018 at 12:21 UTC
    Thanks! :)

    It doesn't help here, because I'm DB agnostic and this goes the other way round.

    But it's good to know and shows a nice way to model such overloads.

    Cheers Rolf
    (addicted to the Perl Programming Language :)
    Wikisyntax for the Monastery FootballPerl is like chess, only without the dice

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