I have one flat file i made connection using flat file source editor
when I did preview i got following output.
I want to do sum of column 5 and stored that values into sql database table
help me.

I have one flat file i made connection using flat file source editor when
Share
Use the Aggregate Transformation to sum those values. The reason you only see Group By, Count, Count Distinct is because you are attempting to perform operations on a string column. Compare the available aggregations for text to numeric column
String data type
Numeric data type
How do you fix your package? Your Connection Manager appears to have a header row with column names in it, make that change in the CM itself. While you are in there, update the definition of A-AST-NV as a decimal or floating point value so that you can perform numeric operations on it.
The other option is to leave it as string and as a precedence task, use a Data Conversion Transformation to make it so.