make the DB2/AS400 storage a subclass of DB2, do RNO detection, fix FetchFirst
[dbsrgits/DBIx-Class.git] / t / sqlmaker / limit_dialects / fetch_first.t
diff --git a/t/sqlmaker/limit_dialects/fetch_first.t b/t/sqlmaker/limit_dialects/fetch_first.t
new file mode 100644 (file)
index 0000000..f084782
--- /dev/null
@@ -0,0 +1,218 @@
+use strict;
+use warnings;
+
+use Test::More;
+use lib qw(t/lib);
+use DBICTest;
+use DBIC::SqlMakerTest;
+
+my $schema = DBICTest->init_schema;
+
+# based on toplimit.t
+delete $schema->storage->_sql_maker->{_cached_syntax};
+$schema->storage->_sql_maker->limit_dialect ('FetchFirst');
+
+my $books_45_and_owners = $schema->resultset ('BooksInLibrary')->search ({}, { prefetch => 'owner', rows => 2, offset => 3 });
+
+for my $null_order (
+  undef,
+  '',
+  {},
+  [],
+  [{}],
+) {
+  my $rs = $books_45_and_owners->search ({}, {order_by => $null_order });
+  is_same_sql_bind(
+      $rs->as_query,
+      '(SELECT id, source, owner, title, price, owner__id, owner__name
+          FROM (
+            SELECT me.id, me.source, me.owner, me.title, me.price, owner.id AS owner__id, owner.name AS owner__name
+              FROM books me
+              JOIN owners owner ON owner.id = me.owner
+            WHERE ( source = ? )
+            ORDER BY me.id
+            FETCH FIRST 5 ROWS ONLY
+          ) me
+        ORDER BY me.id DESC
+        FETCH FIRST 2 ROWS ONLY
+       )',
+    [ [ { sqlt_datatype => 'varchar', sqlt_size => 100, dbic_colname => 'source' }
+        => 'Library' ] ],
+  );
+}
+
+
+for my $ord_set (
+  {
+    order_by => \'foo DESC',
+    order_inner => 'foo DESC',
+    order_outer => 'ORDER__BY__1 ASC',
+    order_req => 'ORDER__BY__1 DESC',
+    exselect_outer => 'ORDER__BY__1',
+    exselect_inner => 'foo AS ORDER__BY__1',
+  },
+  {
+    order_by => { -asc => 'foo'  },
+    order_inner => 'foo ASC',
+    order_outer => 'ORDER__BY__1 DESC',
+    order_req => 'ORDER__BY__1 ASC',
+    exselect_outer => 'ORDER__BY__1',
+    exselect_inner => 'foo AS ORDER__BY__1',
+  },
+  {
+    order_by => { -desc => 'foo' },
+    order_inner => 'foo DESC',
+    order_outer => 'ORDER__BY__1 ASC',
+    order_req => 'ORDER__BY__1 DESC',
+    exselect_outer => 'ORDER__BY__1',
+    exselect_inner => 'foo AS ORDER__BY__1',
+  },
+  {
+    order_by => 'foo',
+    order_inner => 'foo',
+    order_outer => 'ORDER__BY__1 DESC',
+    order_req => 'ORDER__BY__1',
+    exselect_outer => 'ORDER__BY__1',
+    exselect_inner => 'foo AS ORDER__BY__1',
+  },
+  {
+    order_by => [ qw{ foo me.owner}   ],
+    order_inner => 'foo, me.owner',
+    order_outer => 'ORDER__BY__1 DESC, me.owner DESC',
+    order_req => 'ORDER__BY__1, me.owner',
+    exselect_outer => 'ORDER__BY__1',
+    exselect_inner => 'foo AS ORDER__BY__1',
+  },
+  {
+    order_by => ['foo', { -desc => 'bar' } ],
+    order_inner => 'foo, bar DESC',
+    order_outer => 'ORDER__BY__1 DESC, ORDER__BY__2 ASC',
+    order_req => 'ORDER__BY__1, ORDER__BY__2 DESC',
+    exselect_outer => 'ORDER__BY__1, ORDER__BY__2',
+    exselect_inner => 'foo AS ORDER__BY__1, bar AS ORDER__BY__2',
+  },
+  {
+    order_by => { -asc => [qw{ foo bar }] },
+    order_inner => 'foo ASC, bar ASC',
+    order_outer => 'ORDER__BY__1 DESC, ORDER__BY__2 DESC',
+    order_req => 'ORDER__BY__1 ASC, ORDER__BY__2 ASC',
+    exselect_outer => 'ORDER__BY__1, ORDER__BY__2',
+    exselect_inner => 'foo AS ORDER__BY__1, bar AS ORDER__BY__2',
+  },
+  {
+    order_by => [
+      'foo',
+      { -desc => [qw{bar}] },
+      { -asc  => [qw{me.owner sensors}]},
+    ],
+    order_inner => 'foo, bar DESC, me.owner ASC, sensors ASC',
+    order_outer => 'ORDER__BY__1 DESC, ORDER__BY__2 ASC, me.owner DESC, ORDER__BY__3 DESC',
+    order_req => 'ORDER__BY__1, ORDER__BY__2 DESC, me.owner ASC, ORDER__BY__3 ASC',
+    exselect_outer => 'ORDER__BY__1, ORDER__BY__2, ORDER__BY__3',
+    exselect_inner => 'foo AS ORDER__BY__1, bar AS ORDER__BY__2, sensors AS ORDER__BY__3',
+  },
+) {
+  my $o_sel = $ord_set->{exselect_outer}
+    ? ', ' . $ord_set->{exselect_outer}
+    : ''
+  ;
+  my $i_sel = $ord_set->{exselect_inner}
+    ? ', ' . $ord_set->{exselect_inner}
+    : ''
+  ;
+
+  is_same_sql_bind(
+    $books_45_and_owners->search ({}, {order_by => $ord_set->{order_by}})->as_query,
+    "(SELECT id, source, owner, title, price, owner__id, owner__name
+        FROM (
+          SELECT id, source, owner, title, price, owner__id, owner__name$o_sel
+            FROM (
+              SELECT me.id, me.source, me.owner, me.title, me.price, owner.id AS owner__id, owner.name AS owner__name$i_sel
+                FROM books me
+                JOIN owners owner ON owner.id = me.owner
+              WHERE ( source = ? )
+              ORDER BY $ord_set->{order_inner}
+              FETCH FIRST 5 ROWS ONLY
+            ) me
+          ORDER BY $ord_set->{order_outer}
+          FETCH FIRST 2 ROWS ONLY
+        ) me
+      ORDER BY $ord_set->{order_req}
+      FETCH FIRST 2 ROWS ONLY
+    )",
+    [ [ { sqlt_datatype => 'varchar', sqlt_size => 100, dbic_colname => 'source' }
+        => 'Library' ] ],
+  );
+}
+
+# with groupby
+is_same_sql_bind (
+  $books_45_and_owners->search ({}, { group_by => 'title', order_by => 'title' })->as_query,
+  '(SELECT me.id, me.source, me.owner, me.title, me.price, owner.id, owner.name
+      FROM (
+        SELECT id, source, owner, title, price
+          FROM (
+            SELECT id, source, owner, title, price
+              FROM (
+                SELECT me.id, me.source, me.owner, me.title, me.price
+                  FROM books me
+                  JOIN owners owner ON owner.id = me.owner
+                WHERE ( source = ? )
+                GROUP BY title
+                ORDER BY title
+                FETCH FIRST 5 ROWS ONLY
+              ) me
+            ORDER BY title DESC
+            FETCH FIRST 2 ROWS ONLY
+          ) me
+        ORDER BY title
+        FETCH FIRST 2 ROWS ONLY
+      ) me
+      JOIN owners owner ON owner.id = me.owner
+    WHERE ( source = ? )
+    ORDER BY title
+  )',
+  [ map { [
+    { sqlt_datatype => 'varchar', sqlt_size => 100, dbic_colname => 'source' }
+      => 'Library' ]
+  } (1,2) ],
+);
+
+# test deprecated column mixing over join boundaries
+my $rs_selectas_top = $schema->resultset ('BooksInLibrary')->search ({}, {
+  '+select' => ['owner.name'],
+  '+as' => ['owner_name'],
+  join => 'owner',
+  rows => 1 
+});
+
+is_same_sql_bind( $rs_selectas_top->search({})->as_query,
+                  '(SELECT
+                      me.id, me.source, me.owner, me.title, me.price,
+                      owner.name AS owner_name
+                    FROM books me
+                    JOIN owners owner ON owner.id = me.owner
+                    WHERE ( source = ? )
+                    ORDER BY me.id
+                    FETCH FIRST 1 ROWS ONLY
+                   )',
+                  [ [ { sqlt_datatype => 'varchar', sqlt_size => 100, dbic_colname => 'source' }
+                    => 'Library' ] ],
+                );
+
+{
+  my $rs = $schema->resultset('Artist')->search({}, {
+    columns => 'name',
+    offset => 1,
+    order_by => 'name',
+  });
+  local $rs->result_source->{name} = "weird \n newline/multi \t \t space containing \n table";
+
+  like (
+    ${$rs->as_query}->[0],
+    qr| weird \s \n \s newline/multi \s \t \s \t \s space \s containing \s \n \s table|x,
+    'Newlines/spaces preserved in final sql',
+  );
+}
+
+done_testing;