}
}
die "Huh?" unless @before_setop;
- $self->clauses_of(select => @clauses);
+ $self->clauses_of(select => 'with', @clauses);
$self->clause_expanders(
'select.group_by', sub {
$_[0]->_expand_maybe_list_expr($_[1], -ident)
return $exp;
});
}
-
- $self->clause_expander('select.union' => sub {
- +(setop => $_[0]->expand_expr({
- -union => {
- queries => (ref($_[1]) eq 'ARRAY' ? $_[1] : [ $_[1] ]),
- }
- }));
- });
- $self->clause_expander('select.union_all' => sub {
- +(setop => $_[0]->expand_expr({
- -union => {
- type => 'all',
- queries => (ref($_[1]) eq 'ARRAY' ? $_[1] : [ $_[1] ]),
- }
- }));
- });
- $self->expander(union => sub {
- my ($self, undef, $args) = @_;
- +{ -union => {
+ my $expand_setop = sub {
+ my ($self, $setop, $args) = @_;
+ +{ "-${setop}" => {
%$args,
queries => [ map $self->expand_expr($_), @{$args->{queries}} ],
} };
- });
+ };
+ $self->expanders(map +($_ => $expand_setop), qw(union intersect except));
$self->clause_renderer('select.setop' => sub {
my ($self, $setop) = @_;
$self->render_aqt($setop);
});
- $self->renderer(union => sub {
- my ($self, $args) = @_;
- $self->join_clauses(
- ' '.$self->format_keyword(join '_', 'union', ($args->{type}||())).' ',
- map [ $self->render_aqt($_) ], @{$args->{queries}}
+ foreach my $setop (qw(union intersect except)) {
+ $self->renderer($setop => sub {
+ my ($self, undef, $args) = @_;
+ $self->join_clauses(
+ ' '.$self->format_keyword(join '_', $setop, ($args->{type}||())).' ',
+ map [ $self->render_aqt($_) ], @{$args->{queries}}
+ );
+ });
+
+ $self->clause_expander("select.${setop}" => sub {
+ +(setop => $_[0]->expand_expr({
+ "-${setop}" => {
+ queries => (ref($_[1]) eq 'ARRAY' ? $_[1] : [ $_[1] ]),
+ }
+ }));
+ });
+ $self->clause_expander("select.${setop}_all" => sub {
+ +(setop => $_[0]->expand_expr({
+ "-${setop}" => {
+ type => 'all',
+ queries => (ref($_[1]) eq 'ARRAY' ? $_[1] : [ $_[1] ]),
+ }
+ }));
+ });
+ }
+ $self->clause_expander('select.with' => my $with_expander = sub {
+ my ($self, $with) = @_;
+ if (ref($with) eq 'HASH') {
+ return +{
+ %$with,
+ queries => [ map $self->expand_expr($_), @{$with->{queries}} ]
+ }
+ }
+ my @with = @$with;
+ my @exp;
+ while (my ($name, $query) = splice @with, 0, 2) {
+ my @n = map $self->expand_expr($_, -ident),
+ ref($name) eq 'ARRAY' ? @$name : $name;
+ push @exp, [
+ \@n,
+ $self->expand_expr($query)
+ ];
+ }
+ return +{ queries => \@exp };
+ });
+ $self->clause_expander('select.with_recursive' => sub {
+ my ($self, $with) = @_;
+ my $exp = $self->$with_expander($with);
+ return +(with => +{
+ %$exp,
+ type => 'recursive'
+ });
+ });
+ $self->clause_renderer('select.with' => sub {
+ my ($self, $with) = @_;
+ my $q_part = [ $self->join_clauses(', ',
+ map {
+ my ($alias, $query) = @$_;
+ [ $self->join_clauses(' ',
+ [ $self->_render_alias($alias) ],
+ [ $self->format_keyword('as') ],
+ [ $self->render_aqt($query) ],
+ ) ]
+ } @{$with->{queries}}
+ ) ];
+ return $self->join_clauses(' ',
+ [ $self->format_keyword(join '_', 'with', ($with->{type}||'')) ],
+ $q_part,
);
});
}
sub _render_from_list {
- my ($self, $list) = @_;
+ my ($self, undef, $list) = @_;
return $self->join_clauses(', ', map [ $self->render_aqt($_) ], @$list);
}
sub _render_join {
- my ($self, $args) = @_;
+ my ($self, undef, $args) = @_;
my @parts = (
[ $self->render_aqt($args->{from}) ],
}
sub _render_as {
- my ($self, $args) = @_;
- my ($thing, $as, @cols) = @$args;
+ my ($self, undef, $args) = @_;
+ my ($thing, @alias) = @$args;
return $self->join_clauses(
' ',
[ $self->render_aqt($thing) ],
[ $self->format_keyword('as') ],
- (@cols
- ? [ $self->join_clauses('',
- [ $self->render_aqt($as) ],
- [ '(' ],
- [ $self->join_clauses(
- ', ',
- map [ $self->render_aqt($_) ], @cols
- ) ],
- [ ')' ],
- ) ]
- : [ $self->render_aqt($as) ]
- ),
+ [ $self->_render_alias(\@alias) ],
);
}
+sub _render_alias {
+ my ($self, $args) = @_;
+ my ($as, @cols) = @$args;
+ return (@cols
+ ? $self->join_clauses('',
+ [ $self->render_aqt($as) ],
+ [ '(' ],
+ [ $self->join_clauses(
+ ', ',
+ map [ $self->render_aqt($_) ], @cols
+ ) ],
+ [ ')' ],
+ )
+ : $self->render_aqt($as)
+ );
+}
+
+sub _expand_update_clause_target {
+ my ($self, $target) = @_;
+ +(target => $self->_expand_from_list(undef, $target));
+}
+
1;