加速sql查询ms sql server

Question

我有以下SQL

SELECT DISTINCT C.Id AS CustomerId,
                C.ZoneId,
                GPC.GeographicalZoneId
FROM   Customers C
       LEFT OUTER JOIN GeographicalZoneZipAndPostalCodes GPC
               ON GPC.ZipAndPostalCodeId = C.PhysicalZipId

请参阅执行计划并向我提供任何建议以获得更快的结果