Mercurial > urweb
view tests/join.ur @ 1578:7d2aa0ddc531
Some notes on 'T' for update/delete combinators
author | Adam Chlipala <adam@chlipala.net> |
---|---|
date | Thu, 20 Oct 2011 09:27:37 -0400 |
parents | f95d652086cd |
children |
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table t : { A : int, B : string, C : option string } fun main () = r <- oneRow (SELECT * FROM t); r <- oneRow (SELECT * FROM t AS T1, t AS T2); r <- oneRow (SELECT * FROM t AS T1 CROSS JOIN t AS T2); r <- oneRow (SELECT * FROM t AS T1 JOIN t AS T2 ON T1.A = T2.A); r <- oneRow (SELECT * FROM t AS T1 LEFT JOIN t AS T2 ON T1.A = T2.A); r <- oneRow (SELECT * FROM t AS T1 RIGHT OUTER JOIN t AS T2 ON T1.A = T2.A); r <- oneRow (SELECT * FROM t AS T1 FULL JOIN t AS T2 ON T1.A = T2.A); return <xml/>