替换SQL中字符串的某些部分

时间：2018-08-02 08:05:42

标签： sql sql-server

我有一个带有数据的平面文件，并且在每一行中都有自己想要的位置：

  1. 替换为货币值（这是一个小数）
  2. 将此小数点后两位设为11个字符。

我的数据示例如下：

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，我想将长度为11个字符的字符100处的文本替换为我计算的十进制值（该值是货币值），我需要将其转换为美分，然后将其转换为总共11个字符。

我要更改的部分在此之后（只是为了您可以轻松找到位置）：

00000002033
00000001452

所以在上面的2行中，我想要以下结果：

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

这是我的结果：

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来尝试在所需的特定位置进行替换，该方法可以工作....但是它也在文本中进一步替换，我不希望这样做（明显）。另外，我也不知道如何从小数点到末尾删除（这似乎总是带有小数点的7个字符），然后在前面添加正确数量的0以使整个长度为11个字符。

编辑

我已经想出了如何通过替换来替换第一次出现的事件：

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

与此：

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)

这是我正在尝试的代码：

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

这有点冗长，但是我不知道该怎么解释。我希望我想要的东西有意义，并且我不会受到太多惩罚...

感谢您的帮助！

1 个答案:

答案 0 :(得分：0)

所以我终于得到了答案！我不确定这是否会对任何人有帮助，但我只是在发布，以防万一：

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
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