Fix for strict SQL languages (Pgsql)

When the value is null [id >= ''] an error is thrown, not being an integer, while [id >= null] will return nil results, curiously. Here we emulate infinity by using a large-ish number instead of null. In future if this becomes a problem we may need to resort to multiple condition definitions as a more verbose solution, for example:

- For when both are set (conditions: id >= ':min' and id <= ':max')
- For when min is set (conditionsMin: id >= ':min')
- For when max is set (conditionsMax: id >= ':max')

modules/backend/widgets/Filter.php

@@ -794,12 +794,11 @@ class Filter extends WidgetBase
                     if (isset($min) || isset($max)) {
                         /*
                          * Condition
-                         *
                          */
                         if ($scopeConditions = $scope->conditions) {
                             $query->whereRaw(DbDongle::parse(strtr($scopeConditions, [
-                                ':min'  => $min,
-                                ':max'  => $max
+                                ':min'  => $min === null ? -999999999 : $min,
+                                ':max'  => $max === null ? 999999999 : $max
                             ])));
                         }
                         /*