SSIS default value is not being set when source value in null -

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problem: oledb source has null value in phone. destination table has phone not null default 1234567. oledb destination has keep nulls unchecked

according read here https://msdn.microsoft.com/en-us/library/ms187887(v=sql.110).aspx

the default value column should inserted if incoming value null.

but it's not happening. , don't want transformation in ssis. can help?

in data flow task, in ole_db source, set data access mode 'sql command' , write out select statement below

select column_a     ,column_b     ,isnull(phone, 1234567)     ,column_c     ,column_d etc. source_table

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