數據準備:一組股票歷史成交數據(股票代碼:601106 中國一重),起止日期:2011-01-04至今,其中變量有“開盤”、“最高”、“最低”、“收盤”、“總手”、“金額”、“漲跌”等
UPDATE FactStockSET [漲跌] = N'漲'WHERE [漲幅] > 0UPDATE FactStockSET [漲跌] = N'跌'WHERE [漲幅] < 0UPDATE FactStockSET [漲跌] = N'持平'WHERE [漲幅] = 0SELECT [漲跌] , COUNT(*) AS CntFROM FactStockGROUP BY [漲跌]SELECT *FROM FactStockWHERE [漲跌] = N'持平'SELECT MAX(收盤) , MIN(收盤) , AVG(收盤)FROM FactStockUPDATE FactStockSET 序列 = CAST(REPLACE(CONVERT(CHAR(10), SUBSTRING([時間], 1, 10), 120), '-', '') AS INT)SELECT *FROM FactStock
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