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POEsqueleto `selectDistinct` not working
 

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    <p><code>selectDistinct</code> seems to not be working for me, it's probably a simple error. the query:</p> <pre><code> info &lt;- runDB $ E.selectDistinct $ E.from $ \(tp `E.InnerJoin` rnd `E.InnerJoin` h) -&gt; do E.on (rnd E.^. RoundId E.==. h E.^. HoleRound) E.on (tp E.^. TpartTournament E.==. rnd E.^. RoundTourn) E.where_ ((tp E.^. TpartTournament E.==. E.val tId )) E.orderBy [E.asc (tp E.^. TpartId)] return (tp, rnd, h) </code></pre> <p>I'm quite sure that this represents the sql query which works:</p> <pre><code>SELECT DISTINCT tpart.id, round.name, hole.hole_num, hole.score from tpart inner join round on round.tourn = tpart.tournament inner join hole on hole.round = round.id where tpart.tournament = 1; </code></pre> <p>To view the results I have a test handler to just print the result table. Notice that for tpart 1, round 1, there are multiple hole 1 and hole 2. In postgresql <code>SELECT DISTINICT</code> removed these duplicates.</p> <pre><code> TpartId, RoundName, holeNum, HoleScore Key {unKey = PersistInt64 1}, round 1, 1, 6 Key {unKey = PersistInt64 1}, round 1, 2, 4 Key {unKey = PersistInt64 1}, round 1, 1, 6 Key {unKey = PersistInt64 1}, round 1, 2, 4 Key {unKey = PersistInt64 1}, round 1, 1, 6 Key {unKey = PersistInt64 1}, round 1, 2, 4 Key {unKey = PersistInt64 1}, round 2, 1, 3 Key {unKey = PersistInt64 1}, round 2, 2, 5 Key {unKey = PersistInt64 1}, round 2, 1, 3 Key {unKey = PersistInt64 1}, round 2, 2, 5 Key {unKey = PersistInt64 1}, round 2, 1, 3 Key {unKey = PersistInt64 1}, round 2, 2, 5 Key {unKey = PersistInt64 3}, round 1, 1, 6 Key {unKey = PersistInt64 3}, round 1, 2, 4 Key {unKey = PersistInt64 3}, round 1, 1, 6 Key {unKey = PersistInt64 3}, round 1, 2, 4 Key {unKey = PersistInt64 3}, round 1, 1, 6 Key {unKey = PersistInt64 3}, round 1, 2, 4 Key {unKey = PersistInt64 3}, round 2, 1, 3 Key {unKey = PersistInt64 3}, round 2, 2, 5 Key {unKey = PersistInt64 3}, round 2, 1, 3 Key {unKey = PersistInt64 3}, round 2, 2, 5 Key {unKey = PersistInt64 3}, round 2, 1, 3 Key {unKey = PersistInt64 3}, round 2, 2, 5 </code></pre> <p>Sorry for the illegibility. Any help would be appreciated! </p>
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    1. COto get closer to discovering your problem turn on query logging as mentioned at http://hackage.haskell.org/package/esqueleto-1.3.4.2/docs/Database-Esqueleto-Internal-Sql.html#v:toRawSql
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