[摘要] The Employee table holds all employees including their managers. Every employee has an Id, and there is also a column for the manager Id. +----+---[全文]
[摘要] 在數(shù)據(jù)倉庫領(lǐng)域有一個概念叫l(wèi)ogical data model，中文一般翻譯為“邏輯數(shù)據(jù)模型”。邏輯數(shù)據(jù)模型設(shè)計與概念數(shù)據(jù)模型設(shè)計、物理數(shù)據(jù)模型設(shè)計是數(shù)據(jù)庫及數(shù)據(jù)倉庫模型設(shè)計的三個主要步驟。邏輯數(shù)據(jù)模型反映的是系統(tǒng)分...[全文]
[摘要] 今天用sql profiler跟一個底層生成的SQL 的時候，跟到這樣一段代碼： WITH TempQuery AS( SELECT *, ROW_NUMBER() OVER (ORDER BY CreateTime DESC) AS RowNumberForSplitFROM (selec[全文]
