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打字猴 活在白日夢裡面的打字猴DESCRIPTION
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The site had the following in the homepage, "打字猴這一陣子開始認真思考針對database的stored procdureor Function做Unit Test時技術上要克服的一些困難之處 Continue reading." I noticed that the web site stated " Number of index or table scans performed." They also stated " Physical Reads and Logical Reads. 打字猴最近在研讀Performance Tuning和MSSQL的Cache在此對Physical Reads和Logical Reads做個簡單的紀錄 在觀察這2個數字需要先SET STATISTICS IO ON Continue reading . Plan Cache in MSSQL Server. DISTINCT是用來移除duplicated data而GROUP BY通常用來分組後和aggregate function e. SUM, AVG, MAX, 一起使用 透過Sqlite project提."