Native Postgresql uses the dollar-integer syntax for placeholders in prepared queries and doesn't support question marks at all, that is emulated by DBD::Pg. That is why you have to take care when you use question marks in SQL comments or as an operator, you have to escape them.

In reply to Re^2: RFC: Placeholder creation for SQL statements by kikuchiyo
in thread RFC: Placeholder creation for SQL statements by LanX

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