質問編集履歴
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ソースを追加しました。何卒よろしくお願いいたします。
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@@ -7,4 +7,91 @@
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基本的な質問にて恐縮ですが、本現象は仕様になりますでしょうか?
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アドバイスなどいただけますと幸いです。
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何卒よろしくお願いいたします。
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何卒よろしくお願いいたします。
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**どうにも先が見えない状況にてソースを掲載させていただきます。
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問題点は@current_value_with_point_before_roundの小数点第一位が四捨五入されてしまうことでしたが、ISNULL(@current_point, 0)の@current_pointにNULLでない数値が代入された次の行からは、小数点以下が切り上げられず（0にならず）入力されることが分かりました。
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説明不足かもしれませんが取り急ぎ。何卒よろしくお願いいたします。**
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CREATE TABLE [dbo].[t_history]
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([code] CHAR(6) NOT NULL
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,[date] DATETIME NOT NULL
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,[value] MONEY
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,[compared_previous_day_yen] MONEY DEFAULT NULL
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,[compared_previous_day_percent] DECIMAL(5,2) DEFAULT NULL
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,[compared_previous_day_percent_before_round] DECIMAL(6,3) DEFAULT NULL
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,[value_with_point] MONEY DEFAULT NULL
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,[value_with_point_before_round] DECIMAL(19,9) DEFAULT NULL
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,[initial_date] INT
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,[point] MONEY
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CONSTRAINT [pk_t_history] PRIMARY KEY([code], [date]))
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DECLARE current_day CURSOR
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FOR SELECT [date]
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,[value]
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,[initial_date]
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,[point]
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FROM [dbo].[t_history]
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ORDER BY [code]
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,[date]
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DECLARE @current_date DATETIME
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,@current_value MONEY
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,@previous_value MONEY
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,@current_initial_date INT
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,@current_point MONEY
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,@previous_point MONEY
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,@current_value_with_point MONEY
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,@current_value_with_point_before_round DECIMAL(19,9)
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,@previous_value_with_point MONEY
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,@previous_value_with_point_before_round DECIMAL(19,9)
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OPEN current_day
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FETCH NEXT FROM current_day
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INTO @current_date
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,@current_value
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,@current_initial_date
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,@current_point
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WHILE @@FETCH_STATUS = 0
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BEGIN
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IF @current_initial_date = YEAR(@current_date) * 10000 + MONTH(@current_date) * 100 + DAY(@current_date)
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BEGIN
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SET @current_value_with_point_before_round = @current_value
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SET @current_value_with_point = @current_value
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UPDATE [dbo].[t_history]
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SET [compared_previous_day_yen] = NULL
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,[compared_previous_day_percent] = NULL
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,[value_with_point] = @current_value_with_point
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,[value_with_point_before_round] = @current_value_with_point_before_round
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WHERE CURRENT OF current_day
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END
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ELSE
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BEGIN
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SET @current_value_with_point_before_round = @previous_value_with_point_before_round * ((1.000000000 * (@current_value + ISNULL(@current_point, 0))) / @previous_value)
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SET @current_value_with_point = ROUND(@current_value_with_point_before_round, 0)
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UPDATE [dbo].[t_history]
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SET [compared_previous_day_yen] = @current_value - @previous_value
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,[compared_previous_day_percent] = ROUND((1.000000000 * @current_value / @previous_value - 1) * 100, 2)
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,[compared_previous_day_percent_before_round] = (1.000000000 * @current_value / @previous_value - 1) * 100
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,[value_with_point] = @current_value_with_point
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,[value_with_point_before_round] = @current_value_with_point_before_round
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WHERE CURRENT OF current_day
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END
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SET @previous_value = @current_value
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SET @previous_point = @current_point
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SET @previous_value_with_point = @current_value_with_point
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SET @previous_value_with_point_before_round = @current_value_with_point_before_round
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FETCH NEXT FROM current_day
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INTO @current_date
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,@current_value
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,@current_initial_date
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,@current_point
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END
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CLOSE current_day
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DEALLOCATE current_day
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