haskell/esqueleto
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104 Commits

Author SHA1 Message Date
Paul Berens
d690e0b425 Implement CASE support 
* This seems to work but I don't have in-depth tests yet
 * I seem to still have some oddity here and there which needs to be
 nailed down
 * This only implements the "full" CASE syntax, not the simplified, and
 it makes ELSE mandatory, (its optional with CASE)
 2014-11-02 01:31:54 -07:00
Felipe Lessa
ba577a0111 Functor Value. 2014-07-12 12:00:54 -03:00
Felipe Lessa
bfdb140e46
Bump version to 1.4.3. 2014-07-12 00:27:23 -03:00
Mitchell Rosen
22f03c2e39 change coalesceDefault argument order 2014-07-11 19:51:01 -07:00
Mitchell Rosen
e735378f90 added coalesce/coalesceDefault functions 2014-07-11 16:03:04 -07:00
Felipe Lessa
46fa0cafcf Export an unValue function. 2014-05-08 10:55:08 -03:00
Felipe Lessa
b04be7d615 Small doc improvements. 2014-05-08 10:47:51 -03:00
Felipe Lessa
466de1f96b Add "since" to rand's doc. 2014-04-08 19:31:51 -03:00
Erik de Castro Lopo
d37331e04d Implement orderBy[rand] modifier. 2014-04-09 05:56:25 +10:00
João Cristóvão
753e4bccac Added num class restriction to random, round_, floor_. 2013-09-19 09:30:16 +01:00
João Cristóvão
0033050806 Merge branch 'master' of github.com:meteficha/esqueleto 2013-09-15 21:57:04 +01:00
Felipe Lessa
c5c76959bd Move public insertSelect API to Language module. 2013-09-15 04:03:40 -03:00
João Cristóvão
161621cbd4 sum_ result type may not be the same as the parameters type. 2013-09-11 10:48:12 +01:00
Danny B
e77e056f5b Handle NULL result in avg_ too. 2013-08-08 16:46:01 +11:00
Danny B
068ec9b1ae Proper NULL handling in max_, min_ and sum_. 
- return expr (Value (Maybe a))
- add joinV to join nested Maybes in an expr
 2013-08-08 15:51:31 +11:00
Danny B
83dc4a433c Make max_, min_ and sum_ less general. 2013-08-07 15:27:29 +11:00
Sam Anklesaria
3641f36326 added tests for math and aggregation functions 2013-07-03 15:46:22 +09:00
Sam Anklesaria
30c321ee03 common math and aggregation sql functions 2013-07-02 19:39:17 +09:00
Felipe Lessa
d056545c3e Bump version to 1.2.2. 2013-05-20 12:35:54 -03:00
Takahiro HIMURA
893f1cd54b Add HAVING support. 2013-05-19 08:21:52 +09:00
Felipe Lessa
1e633a8dd9 Upgrade to persistent 1.2 and bump version to 1.2. 
Note that version 1.1 was skipped for the sake of bringing
esqueleto's version to parity with persistent's.
 2013-04-29 18:21:44 -03:00
Mitsutoshi Aoe
0889709403 Add support for COUNT(expr) 2013-03-07 20:04:43 +09:00
Felipe Lessa
8759774ede Doc typo. 2012-11-29 13:54:55 -02:00
Felipe Lessa
5514f68994 Support for IN and NOT IN. 2012-11-28 18:23:52 -02:00
Felipe Lessa
4769d30b18 Add support for EXISTS and NOT EXISTS. 2012-11-28 18:23:07 -02:00
Danny B
8a79bdaad1 Add some tuple magic to groupBy. 
Now you can say things like:
groupBy (foo ^. FooId, foo ^. FooName, Bar ^. BarName)
instead of:
groupBy $ foo ^. Fooid
groupBy $ foo ^. FooName
groupBy $ Bar ^. BarName
 2012-09-23 23:11:24 +11:00
Danny B
3c932f5a79 Add support for GROUP BY. 2012-09-23 06:07:01 +11:00
Felipe Lessa
94b19267ee New functions limit and offset. 2012-09-09 14:28:28 -03:00
Felipe Lessa
5a0974f4c0 New text-related functions like, (%), concat_ and (++.). 2012-09-09 12:20:15 -03:00
Felipe Lessa
a5b93ff329 Typo. 2012-09-06 10:58:13 -03:00
Felipe Lessa
da6a669366 Add warning about unsupported JOINs to from's docs. 2012-09-06 10:40:39 -03:00
Felipe Lessa
4822172a42 Haddock fix. 2012-09-06 10:37:20 -03:00
Felipe Lessa
25f632398d Better top-level docs for internal modules. 2012-09-06 10:35:55 -03:00
Felipe Lessa
17a2cb65a9 Haddock fixes. 2012-09-06 09:49:14 -03:00
Felipe Lessa
1cb5c19288 Better 'from' documentation. 2012-09-06 09:46:08 -03:00
Felipe Lessa
f718be86da Instead of using rawSql's Single, use a new data type Value. 
First of all, Value is a nicer name than Single.

However the main reason is to avoid error calls and to get better
feedback about the code from GHC.  Because of the GHC bug #6124,
we had many calls to 'error' just to avoid spurious warnings.  By
using data (instead of newtype) for Value we're able to avoid
them.  This commit removes *19* error calls from Sql.hs that GHC
is now able to prove that are unreachable.
 2012-09-06 01:40:52 -03:00
Felipe Lessa
cc72ee9811 Misleading fixity declaration. 2012-09-06 01:28:06 -03:00
Felipe Lessa
077458ad56 Typos. 2012-09-06 01:27:34 -03:00
Felipe Lessa
df63cd864b COUNT(*). 2012-09-05 23:18:56 -03:00
Felipe Lessa
0f677e9246 Add UPDATE support. 2012-09-05 23:09:02 -03:00
Felipe Lessa
f5c046775a Generalize types of numerical operations. 
Persistent doesn't ask for Num and everything has
worked very well so far.  Not having a Num constraint
also allows those operations to work on Maybes.
 2012-09-05 22:57:16 -03:00
Felipe Lessa
3f2f1fdea7 Avoid a lot of redundant parenthesis. 
Although this commit should not change the behaviour of any code,
it does make the resulting SQL a lot more pleasant to the eye.
 2012-09-05 20:45:35 -03:00
Felipe Lessa
dad271a75a Prettify LANGUAGE pragmas. 2012-09-05 19:16:28 -03:00
Felipe Lessa
9a24c7774c Allow SELECT DISTINCT queries as well. 2012-09-05 19:14:03 -03:00
Felipe Lessa
7bb68cc233 Allow any parenthesization of JOINs. 2012-09-05 15:55:59 -03:00
Felipe Lessa
1e19d8625b Implement JOIN and ON clauses. Also add (?.). 2012-09-05 15:38:14 -03:00
Felipe Lessa
80d60bb9b6 Avoid using capitalized "Esqueleto" when referring to the library. 2012-09-04 18:37:02 -03:00
Felipe Lessa
31b4b0669f orderBy, asc, desc. 2012-09-04 18:12:40 -03:00
Felipe Lessa
c601613162 isNothing, just, nothing. 2012-09-04 18:12:25 -03:00
Felipe Lessa
670eebbc96 fromSingle is internal. 2012-09-03 23:13:19 -03:00
Felipe Lessa
2986d0996e Nicer 'from' interface. 
Instead of

  select $ do
    (x,y,z) <- from
    where_ (z^.f ==. y^.f)
    return (x, y^.f, z)

now you may write

  select $
  from $ \(x,y,z) -> do
    where_ (z^.f ==. y^.f)
    return (x, y^.f, z)

Now the only difference in reading order wrt. SQL is the return
on the bottom of the expression. =)

Note that this does not change at all the expressivity of the
language since

  oldFrom = from return
 2012-09-03 17:03:07 -03:00
Felipe Lessa
33d04d5f27 Implement sub. 2012-09-03 15:57:20 -03:00
Felipe Lessa
aba36832f6 Second prototype, now using finally tagless style. 2012-09-03 15:42:28 -03:00
Felipe Lessa
acc119e61f Initial skeleton. 2012-09-03 11:38:22 -03:00