sugar for select and multi-row insert

[scpubgit/Q-Branch.git] / lib / SQL / Abstract / ExtraClauses.pm

diff --git a/lib/SQL/Abstract/ExtraClauses.pm b/lib/SQL/Abstract/ExtraClauses.pm
index b6f83f2..e668de8 100644 (file)
--- a/lib/SQL/Abstract/ExtraClauses.pm
+++ b/lib/SQL/Abstract/ExtraClauses.pm
@@ -27,6 +27,18 @@ sub new {
   $new->{expand_op}{as} = '_expand_op_as';
   $new->{expand}{as} = '_expand_op_as';
   $new->{render}{as} = '_render_as';
+  splice(@{$new->{clauses_of}{update}}, 2, 0, 'from');
+  splice(@{$new->{clauses_of}{delete}}, 1, 0, 'using');
+  $new->{expand_clause}{'update.from'} = '_expand_select_clause_from';
+  $new->{expand_clause}{'delete.using'} = sub {
+    +(using => $_[0]->_expand_from_list(undef, $_[1]));
+  };
+  $new->{expand_clause}{'insert.rowvalues'} = sub {
+    (from => $_[0]->expand_expr({ -values => $_[1] }));
+  };
+  $new->{expand_clause}{'insert.select'} = sub {
+    (from => $_[0]->expand_expr({ -select => $_[1] }));
+  };
   return $new;
 }
 
@@ -71,6 +83,12 @@ sub _expand_join {
   if (my $as = delete $proto{as}) {
     $proto{to} = { -as => [ $proto{to}, ref($as) eq 'ARRAY' ? @$as : $as ] };
   }
+  if (defined($proto{using}) and ref(my $using = $proto{using}) ne 'HASH') {
+    $proto{using} = { -row => [
+      map [ $self->expand_expr($_, -ident) ],
+        ref($using) eq 'ARRAY' ? @$using: $using
+    ] };
+  }
   my %ret = map +($_ => $self->expand_expr($proto{$_}, -ident)),
               sort keys %proto;
   return +{ -join => \%ret };
@@ -94,7 +112,9 @@ sub _render_join {
         .'join'
       )
     ],
-    [ $self->render_aqt($args->{to}) ],
+    [ $self->render_aqt(
+        map +($_->{-ident} || $_->{-as} ? $_ : { -row => [ $_ ] }), $args->{to}
+    ) ],
     ($args->{on} ? (
       [ $self->_sqlcase('on') ],
       [ $self->render_aqt($args->{on}) ],
@@ -119,12 +139,22 @@ sub _render_as {
   my ($thing, $as, @cols) = @$args;
   return $self->_join_parts(
     ' ',
-    [ $self->render_aqt($thing) ],
+    [ $self->render_aqt(
+        map +($_->{-ident} ? $_ : { -row => [ $_ ] }), $thing
+    ) ],
     [ $self->_sqlcase('as') ],
-    [ @cols
-        ? $self->render_aqt({ -func => [ $as, @cols ] })
-        : $self->render_aqt($as)
-    ],
+    (@cols
+      ? [ $self->_join_parts('',
+            [ $self->render_aqt($as) ],
+            [ '(' ],
+            [ $self->_join_parts(
+                ', ',
+                map [ $self->render_aqt($_) ], @cols
+            ) ],
+            [ ')' ],
+        ) ]
+      : [ $self->render_aqt($as) ]
+    ),
   );
 }