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comparison sql.ur @ 13:d05943db55e8

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Sql.joiner
author Adam Chlipala <adam@chlipala.net>
date Mon, 21 Mar 2011 10:16:12 -0400
parents 799f43bce62b
children 744bf911dcc6
comparison
equal deleted inserted replaced
12:a6730c3cfea7 13:d05943db55e8
11 (exp : rest :: {Type} -> [rest ~ key] => sql_exp [tn = key ++ rest] [] [] bool) 11 (exp : rest :: {Type} -> [rest ~ key] => sql_exp [tn = key ++ rest] [] [] bool)
12 [rest :: {Type}] [rest ~ [nm = t] ++ key] => 12 [rest :: {Type}] [rest ~ [nm = t] ++ key] =>
13 (WHERE {{tn}}.{nm} = {@sql_inject inj v} AND {exp [[nm = t] ++ rest] !})) 13 (WHERE {{tn}}.{nm} = {@sql_inject inj v} AND {exp [[nm = t] ++ rest] !}))
14 (fn [rest :: {Type}] [rest ~ []] => (WHERE TRUE)) 14 (fn [rest :: {Type}] [rest ~ []] => (WHERE TRUE))
15 fl m r [_] ! 15 fl m r [_] !
16
17 fun joiner [tn1 :: Name] [tn2 :: Name] [fs] [ofs1] [ofs2] [[tn1] ~ [tn2]] [fs ~ ofs1] [fs ~ ofs2]
18 (fl : folder fs) =
19 @fold
20 [fn key => rest1 :: {Type} -> rest2 :: {Type} -> [rest1 ~ key] => [rest2 ~ key] => sql_exp [tn1 = key ++ rest1, tn2 = key ++ rest2] [] [] bool]
21 (fn [nm :: Name] [t :: Type] [key :: {Type}] [[nm] ~ key]
22 (exp : rest1 :: {Type} -> rest2 :: {Type} -> [rest1 ~ key] => [rest2 ~ key]
23 => sql_exp [tn1 = key ++ rest1, tn2 = key ++ rest2] [] [] bool)
24 [rest1 :: {Type}] [rest2 :: {Type}] [rest1 ~ [nm = t] ++ key] [rest2 ~ [nm = t] ++ key] =>
25 (WHERE {{tn1}}.{nm} = {{tn2}}.{nm} AND {exp [[nm = t] ++ rest1] [[nm = t] ++ rest2] ! !}))
26 (fn [rest1 :: {Type}] [rest2 :: {Type}] [rest1 ~ []] [rest2 ~ []] => (WHERE TRUE))
27 fl [_] [_] ! !