SSIS FlatFile Numeric cant convert to SQL bigint - sql-server

Question

I'm making a IS task. I have a flatfile column named SCB_ActualMIN with a data type string [DT_STR]. I also have a script component to convert the SCB_ActualMIN column to numeric data type. I have this code in my script component
If Not Row.SCBActualDTime_IsNull AndAlso
Not String.IsNullOrEmpty(Row.SCBActualDTime.Trim) Then
Dim dtDate As Date
If DateTime.TryParse(Row.SCBActualDTime.Trim, dtDate) Then
Row.OutPutColumn = dtDate
Else
'If column cannot be parsed
Row.OutPutColumn_IsNull = True
End If
Else
Row.OutPutColumn_IsNull = True
End If
'''''SCBActualDTime
If Not Row.SCBActualMIN_IsNull AndAlso
Not String.IsNullOrEmpty(Row.SCBActualMIN.Trim) Then
Dim MIN As Integer
If Int32.TryParse(Row.SCBActualMIN.Trim, MIN) Then
Row.OutPut2Column = MIN
Else
'If column cannot be parsed
Row.OutPut2Column_IsNull = True
End If
Else
Row.OutPut2Column_IsNull = True
End If
As you can see the conversion of string to datetime data type is successful. While using the same code for string to integer. The Int32.TryParse(Row.SCBActualMIN.Trim, MIN) always return false even I have the value 09764377211 in the line code. Also is there other way for me to avoid the repetition of code.

Answer 1

9764377211 is bigger than 2147483647 which is the maximum value that can be assigned to Int32
Try converting value to Int64 or Double instead of Int32
Dim MIN As Int64
If Int64.TryParse(Row.SCBActualMIN.Trim, MIN) Then
Row.OutPut2Column = MIN
Else
'If column cannot be parsed
Row.OutPut2Column_IsNull = True
End If
OR
Dim MIN As Double
If Double.TryParse(Row.SCBActualMIN.Trim, MIN) Then
Row.OutPut2Column = MIN
Else
'If column cannot be parsed
Row.OutPut2Column_IsNull = True
End If
You cannot avoid repetition because you have to check each column for null by using it is own _IsNull property. You can try minimizing code by creating functions.

Answer 2

First of all, like #Yahfoufi suggested the exception is thrown because the value "9764377211 is bigger than 2147483647 which is the maximum value that can be assigned to Int32..."
You can Read more in this MSDN article about Data Types and corresponding Maximum values.
Type Storage size Range
Int32 4 bytes -2,147,483,648 to 2,147,483,647
Int64 8 bytes Approximately -9.2E+18 to 9.2E+18
Double 8 bytes Approximate range is -1.79E+308 to 1.79E+308 with accuracy of about 15 digits. Can represent numbers as small as 1E-323.
Decimal 12 bytes Approximate range is -7.9E+28 to 7.9E+28 with accuracy of 28 digits. Can represent numbers as small as 1E-28.
...
You can assign this value to Int64 or Decimal or Double Data Types
Optimizing your code
In this case you cannot avoid the repetition of these parts of code because there are using independent properties that cannot be called dynamically:
Checking if Input Columns is Null or Empty
If Not Row.SCBActualMIN_IsNull AndAlso
Not String.IsNullOrEmpty(Row.SCBActualMIN.Trim) Then
Assigning Null to the output column if value cannot be parsed or input is Null or Empty
Row.OutPut2Column_IsNull = True
You can modify your code to minimize number of lines but i don't think it will improve the performance
For each Data Type declare one variable inside the RowProcessing Sub and make your code as the following:
Assuming that these 2 columns are containing dates
Dim dtDate As Date
If Not Row.SCBActualDTime_IsNull AndAlso
Not String.IsNullOrEmpty(Row.SCBActualDTime.Trim) AndAlso
DateTime.TryParse(Row.SCBActualDTime.Trim, dtDate)Then
Row.OutPutColumn = dtDate
Else
'If column cannot be parsed or it is null
Row.OutPutColumn_IsNull = True
End If
'Assuming that SCBActualMIN is a Date
If Not Row.SCBActualMIN_IsNull AndAlso
Not String.IsNullOrEmpty(Row.SCBActualMIN.Trim) AndAlso
DateTime.TryParse(Row.SCBActualMIN.Trim, dtDate)Then
Row.OutPut2Column = dtDate
Else
'If column cannot be parsed
Row.OutPut2Column_IsNull = True
End If
Having a large amount of lines of code is not an issue if performance is good or optimal, Also minimizing the number of lines of code will not necessary improve the performance
Useful Links on SSIS , SQL , .Net Data Types
https://msdn.microsoft.com/en-us/library/cc716729(v=vs.110).aspx
http://www.sqlservergeeks.com/sql-server-and-ssis-data-types/
https://learn.microsoft.com/en-us/sql/integration-services/extending-packages-custom-objects/data-flow/working-with-data-types-in-the-data-flow#mapping-data-types-in-the-data-flow
https://learn.microsoft.com/en-us/sql/integration-services/data-flow/integration-services-data-types