X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=t%2Fprefetch%2Fgrouped.t;h=27d3865f05dc40ab35716b4a5b1e5354573bd3dd;hb=908aa1bb761ec1da5c061fe9f687598e3f1934bc;hp=a0caecdfd4eb8f6dca5ed799c24773d5402d7008;hpb=a2287768f5c3dd665c469d7f9dfe99d369ff6781;p=dbsrgits%2FDBIx-Class.git

diff --git a/t/prefetch/grouped.t b/t/prefetch/grouped.t
index a0caecd..27d3865 100644
--- a/t/prefetch/grouped.t
+++ b/t/prefetch/grouped.t
@@ -1,13 +1,14 @@
 use strict;
 use warnings;
+
 use Test::More;
 
 use lib qw(t/lib);
 use DBICTest;
 use DBIC::SqlMakerTest;
+use DBIx::Class::SQLMaker::LimitDialects;
 
-#plan tests => 6;
-plan 'no_plan';
+my $ROWS = DBIx::Class::SQLMaker::LimitDialects->__rows_bindtype;
 
 my $schema = DBICTest->init_schema();
 my $sdebug = $schema->storage->debug;
@@ -28,7 +29,6 @@ for ($cd_rs->all) {
   my $track_rs = $schema->resultset ('Track')->search (
     { 'me.cd' => { -in => [ $cd_rs->get_column ('cdid')->all ] } },
     {
-      # the select/as is deliberately silly to test both funcs and refs below
       select => [
         'me.cd',
         { count => 'me.trackid' },
@@ -42,6 +42,9 @@ for ($cd_rs->all) {
     },
   );
 
+  # this used to fuck up ->all, do not remove!
+  ok ($track_rs->first, 'There is stuff in the rs');
+
   is($track_rs->count, 5, 'Prefetched count with groupby');
   is($track_rs->all, 5, 'Prefetched objects with groupby');
 
@@ -50,14 +53,13 @@ for ($cd_rs->all) {
     $schema->storage->debugcb ( sub { $query_cnt++ } );
     $schema->storage->debug (1);
 
-    $track_rs->reset;
     while (my $collapsed_track = $track_rs->next) {
       my $cdid = $collapsed_track->get_column('cd');
       is($collapsed_track->get_column('track_count'), 3, "Correct count of tracks for CD $cdid" );
       ok($collapsed_track->cd->title, "Prefetched title for CD $cdid" );
     }
 
-    is ($query_cnt, 0, 'No queries on prefetched titles');
+    is ($query_cnt, 1, 'Single query on prefetched titles');
     $schema->storage->debugcb (undef);
     $schema->storage->debug ($sdebug);
   }
@@ -65,8 +67,6 @@ for ($cd_rs->all) {
   # Test sql by hand, as the sqlite db will simply paper over
   # improper group/select combinations
   #
-  # the exploded IN needs fixing below, coming in another branch
-  #
   is_same_sql_bind (
     $track_rs->count_rs->as_query,
     '(
@@ -75,12 +75,13 @@ for ($cd_rs->all) {
           SELECT me.cd
             FROM track me
             JOIN cd cd ON cd.cdid = me.cd
-          WHERE ( me.cd IN ( ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? ) )
+          WHERE ( me.cd IN ( ?, ?, ?, ?, ? ) )
           GROUP BY me.cd
         )
-      count_subq
+      me
     )',
-    [ map { [ 'me.cd' => $_] } ($cd_rs->get_column ('cdid')->all) ],
+    [ map { [ { sqlt_datatype => 'integer', dbic_colname => 'me.cd' }
+      => $_ ] } ($cd_rs->get_column ('cdid')->all) ],
     'count() query generated expected SQL',
   );
 
@@ -89,19 +90,17 @@ for ($cd_rs->all) {
     '(
       SELECT me.cd, me.track_count, cd.cdid, cd.artist, cd.title, cd.year, cd.genreid, cd.single_track
         FROM (
-          SELECT me.cd, COUNT (me.trackid) AS track_count,
+          SELECT me.cd, COUNT (me.trackid) AS track_count
             FROM track me
             JOIN cd cd ON cd.cdid = me.cd
-          WHERE ( me.cd IN ( ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? ) )
+          WHERE ( me.cd IN ( ?, ?, ?, ?, ? ) )
           GROUP BY me.cd
-          ) as me
+          ) me
         JOIN cd cd ON cd.cdid = me.cd
-      WHERE ( me.cd IN ( ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? ) )
+      WHERE ( me.cd IN ( ?, ?, ?, ?, ? ) )
     )',
-    [ map
-      { [ 'me.cd' => $_] }
-      ( $cd_rs->get_column ('cdid')->all, $cd_rs->get_column ('cdid')->all )
-    ],
+    [ map { [ { sqlt_datatype => 'integer', dbic_colname => 'me.cd' }
+      => $_ ] } ( ($cd_rs->get_column ('cdid')->all) x 2 ) ],
     'next() query generated expected SQL',
   );
 
@@ -132,14 +131,19 @@ for ($cd_rs->all) {
 # test a has_many/might_have prefetch at the same level
 # Note that one of the CDs now has 4 tracks instead of 3
 {
-  my $most_tracks_rs = $cd_rs->search ({}, {
-    prefetch => 'liner_notes',  # tracks are alredy prefetched
-    select => ['me.cdid', { count => 'tracks.trackid' } ],
-    as => [qw/cdid track_count/],
-    group_by => 'me.cdid',
-    order_by => { -desc => 'track_count' },
-    rows => 2,
-  });
+  my $most_tracks_rs = $schema->resultset ('CD')->search (
+    {
+      'me.cdid' => { '!=' => undef },  # duh - this is just to test WHERE
+    },
+    {
+      prefetch => [qw/tracks liner_notes/],
+      select => ['me.cdid', { count => 'tracks.trackid' }, { max => 'tracks.trackid', -as => 'maxtr'} ],
+      as => [qw/cdid track_count max_track_id/],
+      group_by => 'me.cdid',
+      order_by => [ { -desc => 'track_count' }, { -asc => 'maxtr' } ],
+      rows => 2,
+    }
+  );
 
   is_same_sql_bind (
     $most_tracks_rs->count_rs->as_query,
@@ -148,42 +152,42 @@ for ($cd_rs->all) {
         FROM (
           SELECT me.cdid
             FROM cd me
-            LEFT JOIN track tracks ON tracks.cd = me.cdid
-            LEFT JOIN liner_notes liner_notes ON liner_notes.liner_id = me.cdid
-          WHERE ( tracks.cd IS NOT NULL )
+          WHERE ( me.cdid IS NOT NULL )
           GROUP BY me.cdid
-          LIMIT 2
-        ) count_subq
+          LIMIT ?
+        ) me
     )',
-    [],
+    [[$ROWS => 2]],
     'count() query generated expected SQL',
   );
 
   is_same_sql_bind (
     $most_tracks_rs->as_query,
     '(
-      SELECT me.cdid, me.track_count, tracks.trackid, tracks.cd, tracks.position, tracks.title, tracks.last_updated_on, tracks.last_updated_at, liner_notes.liner_id, liner_notes.notes
+      SELECT  me.cdid, me.track_count, me.maxtr,
+              tracks.trackid, tracks.cd, tracks.position, tracks.title, tracks.last_updated_on, tracks.last_updated_at,
+              liner_notes.liner_id, liner_notes.notes
         FROM (
-          SELECT me.cdid, COUNT( tracks.trackid ) AS track_count
+          SELECT me.cdid, COUNT( tracks.trackid ) AS track_count, MAX( tracks.trackid ) AS maxtr
             FROM cd me
             LEFT JOIN track tracks ON tracks.cd = me.cdid
-          WHERE ( tracks.cd IS NOT NULL )
+          WHERE ( me.cdid IS NOT NULL )
           GROUP BY me.cdid
-          ORDER BY track_count DESC
-          LIMIT 2
+          ORDER BY track_count DESC, maxtr ASC
+          LIMIT ?
         ) me
         LEFT JOIN track tracks ON tracks.cd = me.cdid
         LEFT JOIN liner_notes liner_notes ON liner_notes.liner_id = me.cdid
-      WHERE ( tracks.cd IS NOT NULL )
-      ORDER BY track_count DESC, tracks.cd
+      WHERE ( me.cdid IS NOT NULL )
+      ORDER BY track_count DESC, maxtr ASC
     )',
-    [],
+    [[$ROWS => 2]],
     'next() query generated expected SQL',
   );
 
   is ($most_tracks_rs->count, 2, 'Limit works');
   my $top_cd = $most_tracks_rs->first;
-  is ($top_cd->id, 2, 'Correct cd fetched on top'); # 2 because of the slice(1,1) above
+  is ($top_cd->id, 2, 'Correct cd fetched on top'); # 2 because of the slice(1,1) earlier
 
   my $query_cnt = 0;
   $schema->storage->debugcb ( sub { $query_cnt++ } );
@@ -202,3 +206,156 @@ for ($cd_rs->all) {
   $schema->storage->debugcb (undef);
   $schema->storage->debug ($sdebug);
 }
+
+# make sure that distinct still works
+{
+  my $rs = $schema->resultset("CD")->search({}, {
+    prefetch => 'tags',
+    order_by => 'cdid',
+    distinct => 1,
+  });
+
+  is_same_sql_bind (
+    $rs->as_query,
+    '(
+      SELECT me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track,
+             tags.tagid, tags.cd, tags.tag
+        FROM (
+          SELECT me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track
+            FROM cd me
+          GROUP BY me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track
+          ORDER BY cdid
+        ) me
+        LEFT JOIN tags tags ON tags.cd = me.cdid
+      ORDER BY cdid
+    )',
+    [],
+    'Prefetch + distinct resulted in correct group_by',
+  );
+
+  is ($rs->all, 5, 'Correct number of CD objects');
+  is ($rs->count, 5, 'Correct count of CDs');
+}
+
+# RT 47779, test group_by as a scalar ref
+{
+  my $track_rs = $schema->resultset ('Track')->search (
+    { 'me.cd' => { -in => [ $cd_rs->get_column ('cdid')->all ] } },
+    {
+      select => [
+        'me.cd',
+        { count => 'me.trackid' },
+      ],
+      as => [qw/
+        cd
+        track_count
+      /],
+      group_by => \'SUBSTR(me.cd, 1, 1)',
+      prefetch => 'cd',
+    },
+  );
+
+  is_same_sql_bind (
+    $track_rs->count_rs->as_query,
+    '(
+      SELECT COUNT( * )
+        FROM (
+          SELECT SUBSTR(me.cd, 1, 1)
+            FROM track me
+            JOIN cd cd ON cd.cdid = me.cd
+          WHERE ( me.cd IN ( ?, ?, ?, ?, ? ) )
+          GROUP BY SUBSTR(me.cd, 1, 1)
+        )
+      me
+    )',
+    [ map { [ { sqlt_datatype => 'integer', dbic_colname => 'me.cd' }
+      => $_ ] } ($cd_rs->get_column ('cdid')->all) ],
+    'count() query generated expected SQL',
+  );
+}
+
+{
+    my $cd_rs = $schema->resultset('CD')->search({}, {
+            distinct => 1,
+            join     => [qw/ tracks /],
+            prefetch => [qw/ artist /],
+        });
+    is($cd_rs->count, 5, 'complex prefetch + non-prefetching has_many join count correct');
+    is($cd_rs->all, 5, 'complex prefetch + non-prefetching has_many join number of objects correct');
+
+    # make sure join tracks was thrown out
+    is_same_sql_bind (
+      $cd_rs->as_query,
+      '(
+        SELECT me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track,
+               artist.artistid, artist.name, artist.rank, artist.charfield
+          FROM (
+            SELECT me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track
+              FROM cd me
+              JOIN artist artist ON artist.artistid = me.artist
+            GROUP BY me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track
+          ) me
+          JOIN artist artist ON artist.artistid = me.artist
+      )',
+      [],
+    );
+
+
+
+    # try the same as above, but add a condition so the tracks join can not be thrown away
+    my $cd_rs2 = $cd_rs->search ({ 'tracks.title' => { '!=' => 'ugabuganoexist' } });
+    is($cd_rs2->count, 5, 'complex prefetch + non-prefetching restricted has_many join count correct');
+    is($cd_rs2->all, 5, 'complex prefetch + non-prefetching restricted has_many join number of objects correct');
+
+    # the outer group_by seems like a necessary evil, if someone can figure out how to take it away
+    # without breaking compat - be my guest
+    is_same_sql_bind (
+      $cd_rs2->as_query,
+      '(
+        SELECT me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track,
+               artist.artistid, artist.name, artist.rank, artist.charfield
+          FROM (
+            SELECT me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track
+              FROM cd me
+              LEFT JOIN track tracks ON tracks.cd = me.cdid
+              JOIN artist artist ON artist.artistid = me.artist
+            WHERE ( tracks.title != ? )
+            GROUP BY me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track
+          ) me
+          LEFT JOIN track tracks ON tracks.cd = me.cdid
+          JOIN artist artist ON artist.artistid = me.artist
+        WHERE ( tracks.title != ? )
+        GROUP BY me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track,
+                 artist.artistid, artist.name, artist.rank, artist.charfield
+      )',
+      [ map { [ { sqlt_datatype => 'varchar', sqlt_size => 100, dbic_colname => 'tracks.title' }
+            => 'ugabuganoexist' ] } (1,2)
+      ],
+    );
+}
+
+{
+    my $rs = $schema->resultset('CD')->search({},
+        {
+           '+select' => [{ count => 'tags.tag' }],
+           '+as' => ['test_count'],
+           prefetch => ['tags'],
+           distinct => 1,
+           order_by => {'-asc' => 'tags.tag'},
+           rows => 1
+        }
+    );
+    is_same_sql_bind($rs->as_query, q{
+        (SELECT me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track, me.test_count, tags.tagid, tags.cd, tags.tag
+          FROM (SELECT me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track, COUNT( tags.tag ) AS test_count
+                FROM cd me LEFT JOIN tags tags ON tags.cd = me.cdid
+            GROUP BY me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track, tags.tag
+            ORDER BY tags.tag ASC LIMIT ?)
+            me
+          LEFT JOIN tags tags ON tags.cd = me.cdid
+         ORDER BY tags.tag ASC
+        )
+    }, [[$ROWS => 1]]);
+}
+
+done_testing;