1 # Test to ensure we get a consistent result set wether or not we use the
2 # prefetch option in combination rows (LIMIT).
10 use DBIC::SqlMakerTest;
11 use DBIx::Class::SQLMaker::LimitDialects;
13 my $ROWS = DBIx::Class::SQLMaker::LimitDialects->__rows_bindtype;
15 my $schema = DBICTest->init_schema();
18 my $no_prefetch = $schema->resultset('Artist')->search(
19 [ # search deliberately contrived
20 { 'artwork.cd_id' => undef },
21 { 'tracks.title' => { '!=' => 'blah-blah-1234568' }}
23 { rows => 3, join => { cds => [qw/artwork tracks/] },
27 my $use_prefetch = $no_prefetch->search(
30 select => ['me.artistid', 'me.name'],
31 as => ['artistid', 'name'],
33 order_by => { -desc => 'name' },
37 # add an extra +select to make sure it does not throw things off
38 # we also expect it to appear in both selectors, as we can not know
39 # for sure which part of the query it applies to (may be order_by,
40 # maybe something else)
42 # we use a reference to the same array in bind vals, because
43 # is_deeply picks up this difference too (not sure if bug or
45 $use_prefetch = $use_prefetch->search({}, {
46 '+columns' => { monkeywrench => \[ 'me.artistid + ?', [ \ 'inTEger' => 1 ] ] },
49 my $bind_int_resolved = sub { [ { sqlt_datatype => 'inTEger' } => 1 ] };
50 my $bind_vc_resolved = sub { [
51 { sqlt_datatype => 'varchar', sqlt_size => 100, dbic_colname => 'tracks.title' }
52 => 'blah-blah-1234568'
55 $use_prefetch->as_query,
57 SELECT me.artistid + ?,
59 cds.cdid, cds.artist, cds.title, cds.year, cds.genreid, cds.single_track
61 SELECT me.artistid + ?,
65 ON cds.artist = me.artistid
66 LEFT JOIN cd_artwork artwork
67 ON artwork.cd_id = cds.cdid
68 LEFT JOIN track tracks
69 ON tracks.cd = cds.cdid
70 WHERE artwork.cd_id IS NULL
72 GROUP BY me.artistid + ?, me.artistid, me.name
73 ORDER BY name DESC LIMIT ?
76 ON cds.artist = me.artistid
77 LEFT JOIN cd_artwork artwork
78 ON artwork.cd_id = cds.cdid
79 LEFT JOIN track tracks
80 ON tracks.cd = cds.cdid
81 WHERE artwork.cd_id IS NULL
86 $bind_int_resolved->(), # outer select
87 $bind_int_resolved->(), # inner select
88 $bind_vc_resolved->(), # inner where
89 $bind_int_resolved->(), # inner group_by
91 $bind_vc_resolved->(), # outer where
93 'Expected SQL on complex limited prefetch'
96 is($no_prefetch->count, $use_prefetch->count, '$no_prefetch->count == $use_prefetch->count');
98 scalar ($no_prefetch->all),
99 scalar ($use_prefetch->all),
100 "Amount of returned rows is right"
103 my $artist_many_cds = $schema->resultset('Artist')->search ( {}, {
105 group_by => 'me.artistid',
106 having => \ 'count(cds.cdid) > 1',
110 $no_prefetch = $schema->resultset('Artist')->search(
111 { artistid => $artist_many_cds->id },
115 $use_prefetch = $no_prefetch->search ({}, { prefetch => 'cds' });
117 my $normal_artist = $no_prefetch->single;
118 my $prefetch_artist = $use_prefetch->find({ name => $artist_many_cds->name });
119 my $prefetch2_artist = $use_prefetch->first;
122 $prefetch_artist->cds->count,
123 $normal_artist->cds->count,
124 "Count of child rel with prefetch + rows => 1 is right (find)"
127 $prefetch2_artist->cds->count,
128 $normal_artist->cds->count,
129 "Count of child rel with prefetch + rows => 1 is right (first)"
133 scalar ($prefetch_artist->cds->all),
134 scalar ($normal_artist->cds->all),
135 "Amount of child rel rows with prefetch + rows => 1 is right (find)"
138 scalar ($prefetch2_artist->cds->all),
139 scalar ($normal_artist->cds->all),
140 "Amount of child rel rows with prefetch + rows => 1 is right (first)"
144 sub { $use_prefetch->single },
145 qr/\Qsingle() can not be used on resultsets collapsing a has_many/,
146 'single() with multiprefetch is illegal',
151 $use_prefetch->search(
152 {'tracks.title' => { '!=' => 'foo' }},
153 { order_by => \ 'some oddball literal sql', join => { cds => 'tracks' } }
155 }, qr/A required group_by clause could not be constructed automatically/,
158 my $artist = $use_prefetch->search({'cds.title' => $artist_many_cds->cds->first->title })->next;
159 is($artist->cds->count, 1, "count on search limiting prefetched has_many");
161 # try with double limit
162 my $artist2 = $use_prefetch->search({'cds.title' => { '!=' => $artist_many_cds->cds->first->title } })->slice (0,0)->next;
163 is($artist2->cds->count, 2, "count on search limiting prefetched has_many");
165 # make sure 1:1 joins do not force a subquery (no point to exercise the optimizer, if at all available)
166 # get cd's that have any tracks and their artists
167 my $single_prefetch_rs = $schema->resultset ('CD')->search (
168 { 'me.year' => 2010, 'artist.name' => 'foo' },
169 { prefetch => ['tracks', 'artist'], rows => 15 },
172 $single_prefetch_rs->as_query,
175 me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track,
176 tracks.trackid, tracks.cd, tracks.position, tracks.title, tracks.last_updated_on, tracks.last_updated_at,
177 artist.artistid, artist.name, artist.rank, artist.charfield
180 me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track
182 JOIN artist artist ON artist.artistid = me.artist
183 WHERE ( ( artist.name = ? AND me.year = ? ) )
186 LEFT JOIN track tracks
187 ON tracks.cd = me.cdid
189 ON artist.artistid = me.artist
190 WHERE ( ( artist.name = ? AND me.year = ? ) )
193 [ { sqlt_datatype => 'varchar', sqlt_size => 100, dbic_colname => 'artist.name' } => 'foo' ],
194 [ { sqlt_datatype => 'varchar', sqlt_size => 100, dbic_colname => 'me.year' } => 2010 ],
196 [ { sqlt_datatype => 'varchar', sqlt_size => 100, dbic_colname => 'artist.name' } => 'foo' ],
197 [ { sqlt_datatype => 'varchar', sqlt_size => 100, dbic_colname => 'me.year' } => 2010 ],
199 'No grouping of non-multiplying resultsets',
202 my $many_one_many_rs = $schema->resultset('CD')->search({}, {
203 prefetch => { tracks => { lyrics => 'lyric_versions' } },
205 order_by => ['lyrics.track_id'],
209 $many_one_many_rs->as_query,
211 SELECT me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track,
212 tracks.trackid, tracks.cd, tracks.position, tracks.title, tracks.last_updated_on, tracks.last_updated_at,
213 lyrics.lyric_id, lyrics.track_id, lyric_versions.id, lyric_versions.lyric_id, lyric_versions.text
215 SELECT me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track
217 LEFT JOIN track tracks
218 ON tracks.cd = me.cdid
219 LEFT JOIN lyrics lyrics
220 ON lyrics.track_id = tracks.trackid
221 GROUP BY me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track
222 ORDER BY MIN(lyrics.track_id)
225 LEFT JOIN track tracks
226 ON tracks.cd = me.cdid
227 LEFT JOIN lyrics lyrics
228 ON lyrics.track_id = tracks.trackid
229 LEFT JOIN lyric_versions lyric_versions
230 ON lyric_versions.lyric_id = lyrics.lyric_id
231 ORDER BY lyrics.track_id
234 [ { sqlt_datatype => 'integer' } => 2 ]
236 'Correct SQL on indirectly multiplied orderer',
239 my $cond_on_multi_ord_by_single = $schema->resultset('CD')->search(
241 'tracks.position' => { '!=', 1 },
244 prefetch => [qw( tracks artist )],
245 order_by => 'artist.name',
251 $cond_on_multi_ord_by_single->as_query,
253 SELECT me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track,
254 tracks.trackid, tracks.cd, tracks.position, tracks.title, tracks.last_updated_on, tracks.last_updated_at,
255 artist.artistid, artist.name, artist.rank, artist.charfield
257 SELECT me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track
259 LEFT JOIN track tracks
260 ON tracks.cd = me.cdid
262 ON artist.artistid = me.artist
263 WHERE tracks.position != ?
264 GROUP BY me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track, artist.name
268 LEFT JOIN track tracks
269 ON tracks.cd = me.cdid
271 ON artist.artistid = me.artist
272 WHERE tracks.position != ?
276 [ { dbic_colname => "tracks.position", sqlt_datatype => "int" }
279 [ { sqlt_datatype => "integer" }
282 [ { dbic_colname => "tracks.position", sqlt_datatype => "int" }
286 'Correct SQl on prefetch with limit of restricting multi ordered by a single'