替換SQL中字符串的某些部分

Question

我有一個包含數據的平面文件，並且在每一行中都有自己想要的特定位置：

1. 替換為貨幣值（此為小數）
2. 將此小數點后兩位設為11個字符。

我的數據示例如下所示：

ALD2018041620180416FRAP   25CEUR  0017537400        TUYAU DE FREIN BRAKE HOSE     P70   0000000203300000000000                          00001000000000000520J
ALD2018041620180416FRAP   25CEUR  0017689400        CYLINDRE ROUE  WHEEL CYLINDER W70   0000000145200000000000                          00001000000000000455K

在此文本中，我想將長度為11個字符的字符100處的文本替換為我計算出的十進制值（該值是貨幣值），我需要將其轉換為美分，然后總計為長11個字符。

我要更改的部分在此之后（這只是為了您可以輕松找到位置）：

00000002033
00000001452

因此，在上面的2行中，我想要以下結果：

ALD2018041620180416FRAP   25CEUR  0017537400        TUYAU DE FREIN BRAKE HOSE     P70   0000000203300000091972                          00001000000000000520J
ALD2018041620180416FRAP   25CEUR  0017689400        CYLINDRE ROUE  WHEEL CYLINDER W70   0000000145200000065688                          00001000000000000455K

這是我的結果：

ALD2018041620180416FRAP   25CEUR  0017537400        TUYAU DE FREIN BRAKE HOSE     P70   0000000203391972.920000                          0000191972.9200000520J
ALD2018041620180416FRAP   25CEUR  0017689400        CYLINDRE ROUE  WHEEL CYLINDER W70   0000000145265688.480000                          0000165688.4800000455K

我正在使用SUBSTRING嘗試在我想要的特定位置進行替換，該方法可以工作....但是它也在文本中進一步替換，我不希望這樣做（顯然）。 另外，我不知道如何從小數點到末尾刪除（這似乎總是帶有小數點的7個字符），然后在前面添加正確數量的0以使整個長度為11個字符。

編輯

我已經想出了如何通過替換來僅替換FIRST事件：

 SET @TextToChange = REPLACE(@TextToChange,SUBSTRING(@TextToChange,100,11),(((CAST(@UnitPurchasePriceexVAT as decimal(11,2))/100) * @ExchangeRate * 100) * @RetailePriceValue)*100)

有了這個：

SET @TextToChange = STUFF(@TextToChange, CHARINDEX(SUBSTRING(@TextToChange,100,11), @TextToChange), LEN(SUBSTRING(@TextToChange,100,11)), (((CAST(@UnitPurchasePriceexVAT as decimal(11,2))/100) * @ExchangeRate * 100) * @RetailePriceValue)*100)

這是我正在嘗試的代碼：

DECLARE @FilePath as Varchar(1000)
DECLARE @TotalRecords as INT
DECLARE @RecordCount AS INT

SET @FilePath = 'C:\Client Files\Client\AP\2018-07-17\AP-XP0006-Test.txt'
DECLARE @UnitPurchasePriceexVAT As Varchar(11)
DECLARE @TextToChange As Varchar(MAX)
DECLARE @ExchangeRate as Decimal(18,4)
DECLARE @RetailePriceValue as Decimal(18,4)
SET @ExchangeRate = (SELECT CalcValue FROM CalculationValues WHERE CalcName = 'Exchange Rate')
SET @RetailePriceValue = (SELECT CalcValue FROM CalculationValues WHERE CalcName = 'Retail Price Value')

CREATE TABLE #SparePartsPriceList_Temp
(Text Varchar(MAX) NULL)

DECLARE @SQL as Varchar(MAX)

SET @SQL = 'bulk insert #SparePartsPriceList_Temp
from ''' + @FilePath + ''' 
with (fieldterminator = ''\t'', rowterminator = ''0x0a'')'

EXEC (@SQL)

CREATE TABLE #SparePartsPriceList_Temp_staging
(ID int IDENTITY(1,1) PRIMARY KEY,
 Text Varchar(MAX) NULL)

 CREATE TABLE #SparePartsPriceList_Temp_Export
(Text Varchar(MAX) NULL)

INSERT INTO #SparePartsPriceList_Temp_staging(Text)
SELECT Text FROM #SparePartsPriceList_Temp

SET @TotalRecords = (SELECT COUNT(TEXT) FROM #SparePartsPriceList_Temp_staging)
SET @RecordCount = 1

WHILE (@RecordCount <= @TotalRecords)
BEGIN
    SET @TextToChange = (SELECT Text FROM #SparePartsPriceList_Temp_staging WHERE ID = @RecordCount)

    SET @UnitPurchasePriceexVAT = (SELECT SUBSTRING(@TextToChange,89,11))

    SET @TextToChange = STUFF(@TextToChange, CHARINDEX(SUBSTRING(@TextToChange,100,11), @TextToChange), LEN(SUBSTRING(@TextToChange,100,11)), (((CAST(@UnitPurchasePriceexVAT as decimal(11,2))/100) * @ExchangeRate * 100) * @RetailePriceValue)*100)

    INSERT INTO #SparePartsPriceList_Temp_Export
    SELECT @TextToChange

    SET @RecordCount = @RecordCount + 1
END

SELECT * FROM #SparePartsPriceList_Temp_Export
SELECT * FROM #SparePartsPriceList_Temp
DROP TABLE #SparePartsPriceList_Temp
DROP TABLE #SparePartsPriceList_Temp_staging
DROP TABLE #SparePartsPriceList_Temp_Export

這有點冗長，但是我不知道該怎么解釋。 我希望我想要的東西有意義並且我不會受到太多懲罰...

謝謝你的幫助！

Answer 1

所以我終於得到了答案！ 我不確定這是否會對任何人有幫助，但我發布是為了以防萬一：

DECLARE @DealerType as VarChar(20)
DECLARE @FilePath as Varchar(1000)
DECLARE @TotalRecords as INT
DECLARE @RecordCount AS INT
DECLARE @DecimalIndex as INT


SET @DealerType = 'ClientName'
SET @FilePath = 'C:\Client Files\Client\AP\2018-07-17\AP-XP0006_MULTI.txt'
DECLARE @UnitPurchasePriceexVAT As Varchar(11)
DECLARE @NewUnitSellingPriceExVAT as Varchar(11)
DECLARE @TextToChange As Varchar(MAX)
DECLARE @ExchangeRate as Decimal(18,4)
DECLARE @RetailePriceValue as Decimal(18,4)
SET @ExchangeRate = (SELECT CalcValue FROM CalculationValues WHERE CalcName = 'Exchange Rate')
SET @RetailePriceValue = (SELECT CalcValue FROM CalculationValues WHERE CalcName = 'Retail Price Value')

CREATE TABLE #SparePartsPriceList_Temp
(Text Varchar(MAX) NULL)

DECLARE @SQL as Varchar(MAX)

SET @SQL = 'bulk insert #SparePartsPriceList_Temp
from ''' + @FilePath + ''' 
with (fieldterminator = ''\t'', rowterminator = ''0x0a'')'

EXEC (@SQL)

CREATE TABLE #SparePartsPriceList_Temp_staging
(ID int IDENTITY(1,1) PRIMARY KEY,
 Text Varchar(MAX) NULL)

 CREATE TABLE SparePartsPriceList_Temp_Export
(Text Varchar(MAX) NULL)

INSERT INTO #SparePartsPriceList_Temp_staging(Text)
SELECT Text FROM #SparePartsPriceList_Temp

SET @TotalRecords = (SELECT COUNT(TEXT) FROM #SparePartsPriceList_Temp_staging)
SET @RecordCount = 1

WHILE (@RecordCount <= @TotalRecords)
BEGIN
    SET @TextToChange = (SELECT Text FROM #SparePartsPriceList_Temp_staging WHERE ID = @RecordCount)

    SET @UnitPurchasePriceexVAT = (SELECT SUBSTRING(@TextToChange,89,11))
    SET @NewUnitSellingPriceExVAT = CAST((((CAST(@UnitPurchasePriceexVAT as decimal(11,2))/100) * @ExchangeRate * 100) * @RetailePriceValue)*100 as varchar)
    SET @DecimalIndex = CHARINDEX('.',@NewUnitSellingPriceExVAT,1)
    SET @NewUnitSellingPriceExVAT = STUFF(@NewUnitSellingPriceExVAT, CHARINDEX(SUBSTRING(CAST(@NewUnitSellingPriceExVAT as Varchar),@DecimalIndex,7), @NewUnitSellingPriceExVAT), 
                        LEN(SUBSTRING(CAST(@NewUnitSellingPriceExVAT as Varchar),@DecimalIndex,7)), 
                        '')

    SET @NewUnitSellingPriceExVAT = REPLICATE('0',11-LEN(@NewUnitSellingPriceExVAT)) + @NewUnitSellingPriceExVAT
    SET @TextToChange = STUFF(@TextToChange, CHARINDEX(SUBSTRING(@TextToChange,100,11), @TextToChange), LEN(SUBSTRING(@TextToChange,100,11)), @NewUnitSellingPriceExVAT)

    INSERT INTO SparePartsPriceList_Temp_Export
    SELECT @TextToChange

    SET @RecordCount = @RecordCount + 1
END

SELECT * FROM SparePartsPriceList_Temp_Export
SELECT * FROM #SparePartsPriceList_Temp
DROP TABLE #SparePartsPriceList_Temp
DROP TABLE #SparePartsPriceList_Temp_staging
DROP TABLE SparePartsPriceList_Temp_Export