Fix table rate failing for zip+4 address magento#17770

Author: Krzysztof Wolowski

app/code/Magento/OfflineShipping/Model/ResourceModel/Carrier/Tablerate/RateQuery.php

@@ -42,6 +42,7 @@ public function prepareSelect(\Magento\Framework\DB\Select $select)
             ') OR (',
             [
                 "dest_country_id = :country_id AND dest_region_id = :region_id AND dest_zip = :postcode",
+                "dest_country_id = :country_id AND dest_region_id = :region_id AND dest_zip = :postcode_prefix",
                 "dest_country_id = :country_id AND dest_region_id = :region_id AND dest_zip = ''",
 
                 // Handle asterisk in dest_zip field
@@ -51,7 +52,7 @@ public function prepareSelect(\Magento\Framework\DB\Select $select)
                 "dest_country_id = '0' AND dest_region_id = 0 AND dest_zip = '*'",
                 "dest_country_id = :country_id AND dest_region_id = 0 AND dest_zip = ''",
                 "dest_country_id = :country_id AND dest_region_id = 0 AND dest_zip = :postcode",
-                "dest_country_id = :country_id AND dest_region_id = 0 AND dest_zip = '*'"
+                "dest_country_id = :country_id AND dest_region_id = 0 AND dest_zip = :postcode_prefix"
             ]
         ) . ')';
         $select->where($orWhere);
@@ -85,6 +86,7 @@ public function getBindings()
             ':country_id' => $this->request->getDestCountryId(),
             ':region_id' => (int)$this->request->getDestRegionId(),
             ':postcode' => $this->request->getDestPostcode(),
+            ':postcode_prefix' => $this->getDestPostcodePrefix()
         ];
 
         // Render condition by condition name
@@ -112,4 +114,18 @@ public function getRequest()
     {
         return $this->request;
     }
+
+    /**
+     * Returns the entire postcode if it contains no dash
+     * or the part of it prior to the dash in the other case
+     * @return string
+     */
+    private function getDestPostcodePrefix()
+    {
+        if (!preg_match("/^(.+)-(.+)$/", $this->request->getDestPostcode(), $zipParts)) {
+            return $this->request->getDestPostcode();
+        }
+
+        return $zipParts[1];
+    }
 }