The value violated the integrity constraints for the column

Question

I am trying to import the data from Excel file into SQL Server database. I am unable to do so because I am getting following errors in the log file. Please help. The log err

Answer 1

Teradata table or view stores NULL as "?" and SQL considers it as a character or string. This is the main reason for the error "The value violated the integrity constraints for the column." when data is ported from Teradata source to SQL destination. Solution 1: Allow the destination table to hold NULL Solution 2: Convert the '?' character to be stored as some value in the destination table.