sql server 索引優化

查詢實際執行計劃,看走的是那種查詢

要根據需求,創建合適的索引

 

常常須要彙總的,能夠創建包含索引

 

 

--drop index ix_smssend_created on smssent_1 ;

 

create index ix_smssend_created
on smssent_1 (created)
include(status,co_id,shop_id,channel_id,sms_type,sms_qty)