mssql行转列 列转行

一、行转列：

select max(case OptionKey when 'A' then OptionCont else null end) A,max(case OptionKey when 'B' then OptionCont else null end) B,max(case OptionKey when 'C' then OptionCont else null end) C,max(case OptionKey when 'D' then OptionCont else null end) D,...TitleCodefrom T_Optiongroup by TitleCode

二、列转行：

select * from(select ExamRecordId,TitleCode,max(oa) OptionKey,max(A) OptionCont from V_Titlegroup by ExamRecordId,TitleCodeunion allselect ExamRecordId,TitleCode,max(ob) OptionKey,max(B) OptionCont from V_Titlegroup by ExamRecordId,TitleCodeunion allselect ExamRecordId,TitleCode,max(oc) OptionKey,max(C) OptionCont from V_Titlewhere C is not nullgroup by ExamRecordId,TitleCodeunion allselect ExamRecordId,TitleCode,max(od) OptionKey,max(D) OptionCont from V_Titlewhere D is not nullgroup by ExamRecordId,TitleCode) Taborder by TitleCode,ExamRecordId

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