From: Matt S Trout <mst@shadowcat.co.uk>
Date: Thu, 11 Oct 2012 12:07:51 +0000 (+0100)
Subject: select+join+where
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=dbsrgits%2FData-Query.git;a=commitdiff_plain;h=4e0c6139c29c4d618adafef7d11c125dc111d821

select+join+where
---

diff --git a/lib/Data/Query/ExprDeclare.pm b/lib/Data/Query/ExprDeclare.pm
index 0a1bcaa..971e3cc 100644
--- a/lib/Data/Query/ExprDeclare.pm
+++ b/lib/Data/Query/ExprDeclare.pm
@@ -8,7 +8,7 @@ use Safe::Isa;
 
 use base qw(Exporter);
 
-our @EXPORT = qw(expr SELECT AS FROM BY JOIN ON LEFT);
+our @EXPORT = qw(expr SELECT AS FROM BY JOIN ON LEFT WHERE ORDER GROUP);
 
 sub expr (&) {
   _run_expr($_[0])->{expr};
@@ -22,7 +22,13 @@ sub _run_expr {
 }
 
 sub _value {
-  ref($_[0]) ? $_[0]->{expr} : perl_scalar_value($_[0])
+  if ($_[0]->$_isa('Data::Query::ExprBuilder')) {
+    $_[0]->{expr};
+  } elsif (ref($_[0])) {
+    $_[0]
+  } else {
+    perl_scalar_value($_[0]);
+  }
 }
 
 sub AS {
@@ -56,11 +62,13 @@ sub FROM (&;@) {
       _value($from[0]);
     }
   };
-  while ($_[0] and is_Join($_[0])) {
+  while (is_Join($_[0])) {
     $from_dq = { %{+shift}, left => $from_dq };
   }
+  if (is_Where($_[0])) {
+    $from_dq = Where(shift->{where}, $from_dq);
+  }
   return $from_dq;
-  die "Huh?"
 }
 
 sub LEFT {
diff --git a/lib/Data/Query/Renderer/SQL/Naive.pm b/lib/Data/Query/Renderer/SQL/Naive.pm
index 492323b..64e5bc2 100644
--- a/lib/Data/Query/Renderer/SQL/Naive.pm
+++ b/lib/Data/Query/Renderer/SQL/Naive.pm
@@ -313,7 +313,7 @@ sub _render_alias {
   }
   return [
     $self->_maybe_parenthesise($dq->{from}),
-    $as || ' ',
+    $as || '',
     $self->_render_identifier({ elements => [ $dq->{to} ] })
   ];
 }
diff --git a/t/example.t b/t/example.t
index f59dd98..25d6466 100644
--- a/t/example.t
+++ b/t/example.t
@@ -28,3 +28,13 @@ DwarnL render_expr(
   LEFT JOIN { $_->cds, AS 'cd' }
          ON { $_->cd->artistid eq $_->artist->id }
 );
+DwarnL render_expr(
+  SELECT { $_->artist->name } WHERE { $_->artist->age > 25 }
+);
+DwarnL render_expr(
+  SELECT { $_->cd->name }
+  FROM { $_->cds, AS 'cd' }
+  JOIN { $_->artists, AS 'artist' }
+    ON { $_->cd->artistid eq $_->artist->id }
+  WHERE { $_->artist->age > 25 }
+);