There are n numbers of flatfile of exactly same format are
placed in a folder.Can we load these flatfile's data one by
one to a single relational table by a single session??
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In my table i have 4 columns with 100 records but in that 4 columns one column contains all NULL values so can i add NOT NULL CONSTRAINT on that column......... ok if it is not possible, can i add NOT NULL CONSTRAINT from 101 Record Onwards?
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