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-rw-r--r--Bugzilla/DB/Schema.pm26
1 files changed, 22 insertions, 4 deletions
diff --git a/Bugzilla/DB/Schema.pm b/Bugzilla/DB/Schema.pm
index 5da55cf26..97e59efbd 100644
--- a/Bugzilla/DB/Schema.pm
+++ b/Bugzilla/DB/Schema.pm
@@ -210,6 +210,9 @@ update this column in this table."
use constant SCHEMA_VERSION => '2.00';
use constant ADD_COLUMN => 'ADD COLUMN';
+# Multiple FKs can be added using ALTER TABLE ADD CONSTRAINT in one
+# SQL statement. This isn't true for all databases.
+use constant MULTIPLE_FKS_IN_ALTER => 1;
# This is a reasonable default that's true for both PostgreSQL and MySQL.
use constant MAX_IDENTIFIER_LEN => 63;
@@ -1817,11 +1820,26 @@ sub _hash_identifier {
}
-sub get_add_fk_sql {
- my ($self, $table, $column, $def) = @_;
+sub get_add_fks_sql {
+ my ($self, $table, $column_fks) = @_;
- my $fk_string = $self->get_fk_ddl($table, $column, $def);
- return ("ALTER TABLE $table ADD $fk_string");
+ my @add;
+ foreach my $column (keys %$column_fks) {
+ my $def = $column_fks->{$column};
+ my $fk_string = $self->get_fk_ddl($table, $column, $def);
+ push(@add, $fk_string);
+ }
+ my @sql;
+ if ($self->MULTIPLE_FKS_IN_ALTER) {
+ my $alter = "ALTER TABLE $table ADD " . join(', ADD ', @add);
+ push(@sql, $alter);
+ }
+ else {
+ foreach my $fk_string (@add) {
+ push(@sql, "ALTER TABLE $table ADD $fk_string");
+ }
+ }
+ return @sql;
}
sub get_drop_fk_sql {