[postmodern-devel] S-SQL extension :if=

[Andy Chambers]

Hi All,

If anyone's interested in using it, I made a little S-SQL extension

(def-sql-op :=if (a b)
  `(,@(case a
        (:null (sql-expand `(:is-null ,b)))
        (nil (sql-expand t))
        (otherwise (sql-expand `(:= ,a ,b))))))

I find it convenient when writing queries that take optional
parameters where if the parameter is not specified, you want to return
the row regardless of what value b takes.  Does anyone else write
little extensions like these?  Should we collect them in a contrib?


-- 
Andy Chambers
Software Engineer
(e) achambers at mcna.net
(t) 954-682-0573

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