[-] Core: Fix #PSCFV-6162 - can't add no tax for specific zip code or state

classes/tax/TaxRulesTaxManager.php

@@ -83,7 +83,7 @@ class TaxRulesTaxManagerCore implements TaxManagerInterface
 			WHERE `id_country` = '.(int)$this->address->id_country.'
 			AND `id_tax_rules_group` = '.(int)$this->type.'
 			AND `id_state` IN (0, '.(int)$this->address->id_state.')
-			AND (\''.pSQL($postcode).'\' BETWEEN `zipcode_from` AND `zipcode_to` OR `zipcode_from` = 0 OR `zipcode_from` = \''.pSQL($postcode).'\')
+			AND (\''.pSQL($postcode).'\' BETWEEN `zipcode_from` AND `zipcode_to` OR (`zipcode_to` = 0 AND `zipcode_from` IN(0, \''.pSQL($postcode).'\')))
 			ORDER BY `zipcode_from` DESC, `zipcode_to` DESC, `id_state` DESC, `id_country` DESC');
 
 			$behavior = 0;

controllers/admin/AdminTaxRulesGroupController.php

@@ -298,7 +298,7 @@ class AdminTaxRulesGroupControllerCore extends AdminController
 						'id' => 'id_tax',
 						'name' => 'name',
 						'default' => array(
-							'value' => 'name',
+							'value' => 0,
 							'label' => $this->l('No Tax')
 						)
 					),