annotate tests/selclause.ur @ 1886:b7cd3c7c7edd
Interpret 'table' signature items more flexibly, automatically adding (Ur) constraints to support a kind of subtyping over (SQL) constraint sets
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Adam Chlipala <adam@chlipala.net> |
| date |
Mon, 04 Nov 2013 15:14:23 -0500 |
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5c1f10cdac63 |
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1 table t : { A : int, B : string, C : float }
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2 table u : { D : int, E : string, F : float }
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3
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4 val q : transaction (list {T : { A : int, B : string, C : float}, U : { D : int }, X : string }) =
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5 queryL (SELECT t.*, u.D, 'hi' AS X
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6 FROM t, u)
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