SSIS how to convert string (DT_STR) to money (DT_CY) when source has more than 2 decimals

Question

I have a source flat file with values such as 24.209991, but they need to load to SQL Server as type money. In the DTS (which I am converting from), that value comes across

Answer 1

For some reason in my scenario, the OLE DB Destination actually was configured to accept a DT_CY. However, casting to this format (no matter the length of the input and destination data, and no matter wether or not the data was NULL when it arrived) always caused the same issue.

After adding data viewers, I can conclude that this has something to do with the locale. Here in Denmark, we use comma (,) as decimal delimiters and dots (.) as thousands-delimiters, instead of the opposite.

This means that a huge number like 382,939,291,293.38 would (after the conversion to DT_CY) look like 382.939.291.293,38. Even though I highly doubted that it could be the issue, I decided to do the opposite of what I originally had intended.

I decided to go to the advanced settings of my OLE DB Destination and change the DT_CY column's type to DT_STR instead. Then, I added a Derived Column transformation, and entered the following expression to transform the column before the data would arrive at the destination.

REPLACE(SUBSTRING(Price, 2, 18), ",", ".") where Price was the column's name.

To my big surprise, this solved the problem, since I figured out that my OLE DB Destination was now sending the data as a string, which the SQL Server understood perfectly fine.

I am certain that this is a bug! I was using SQL Server 2008, so it might have been solved in later editions. However, I find it quite critical that such an essential thing is not working correctly!