1 files changed, 8 insertions, 0 deletions
diff --git a/bin/update-schema b/bin/update-schema
index 92868e1b6..ef33b82a7 100755
--- a/bin/update-schema
+++ b/bin/update-schema
@@ -85,6 +85,7 @@ print "Nothing to do\n" if $nothing;
 # By querying the database schema, we can see where we're currently at
 # (assuming schema change files are never half-applied, which should be the case)
 sub get_db_version {
+    return '0030' if ! constraint_exists('admin_log_action_check');
     return '0029' if column_exists('body', 'deleted');
     return '0028' if table_exists('body');
     return '0027' if column_exists('problem', 'subcategory');
@@ -134,3 +135,10 @@ sub column_like {
     my ( $table, $where, $column, $contents ) = @_;
     return dbh()->selectrow_array("select count(*) from $table WHERE $where AND $column LIKE ?", {}, "%$contents%");
 }
+
+# Returns true if a check constraint on a table exists
+sub constraint_exists {
+    my ( $constraint ) = @_;
+    return dbh()->selectrow_array('select count(*) from pg_constraint where conname = ?', {}, $constraint);
+}
+