It's not clear whether your slow insert was with DBD::SQLite or with a 'real' DB. 'Real' databases generally have a mechanism for importing data from from a flat file, CSV or tab delimited values, which runs much faster than any script.

If you're going to have a field which you do not populate, why not configure the DB to provide a default of 'undef', or specify the SQL statement so that field is not a variabl;e but is hard-coded to 'undef' ????

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TTTATCGGTCGTTATATAGATGTTTGCA

In reply to Re: Re: Re: many to many join on text files by TomDLux
in thread many to many join on text files by aquarium

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