RussellWestbrook
RussellWestbrook
2015-10-10 07:45

mysql语句查询时间过长如何优化?

30
  • 数据
  • select
  • 优化
  • mysql
  • sql

SELECT t1.id, t1.order_no, t1.order_status, t1.pay_status,t1.shipping_status,
t1.pay_method, t1.invoice, t1.remark, t1.seller, t1.buyer, t1.site_id, t1.order_time, t1.pay_time,
t1.sign_for_time, t1.delivery_time, t1.subtotal, t1.freight, t1.invitation, t1.cope, t1.is_comment,t1.pay_discount FROM zcwl_order t1 LEFT JOIN
zcwl_order_shipping_address t2 ON t2.order_id = t1.id
WHERE t1.site_id ORDER BY t1.order_time DESC

这条sql语句需要查14秒 如何缩短时间?
ps:大概有1W条数据
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