29 lines
544 B
MySQL
29 lines
544 B
MySQL
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SELECT *
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INTO #T1
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FROM (
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SELECT 1 ID,'A+B' 公式
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union ALL
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SELECT 2 ID,'A+B+C' 公式
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) tt
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declare @tttt varchar(MAX),@ttt varchar(MAX)
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SELECT @tttt = ISNULL(STUFF((select ' WHEN '+ CONVERT(nvarchar(100), tt.ID) + 'THEN '+ tt.公式 from #T1 tt for xml path('')),1,1,''),'')
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SET @ttt = N'
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SELECT tt.A,CASE tt.ID '+@tttt+' ELSE 0 END
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FROM(
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SELECT 1 A,2 B,3 C,1 ID
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union ALL
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SELECT 2 A,3 B,3 C,2 ID
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union ALL
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SELECT 1 A,3 B,3 C,1 ID
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union ALL
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SELECT 1 A,1 B,3 C,1 ID
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) tt
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'
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--SELECT @ttt
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exec(@ttt)
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DROP TABLE #T1
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--DROP TABLE #T2
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