brighterplanet/sniff — comment on commit be0ad0980dfa3efe970ba20648f90e29960ab8eb
File:  line 0
By ihough:

Yeah otherwise it keeps any rows that were already in the table or I get duplicate primary key errors e.g.

Mysql2::Error: Duplicate entry '9' for key 'PRIMARY': INSERT INTO `census_divisions` (`number`, `census_region_number`) VALUES (9, 4)
Loading fixture /Users/ian/Sites/lodging/features/support/../../features/support/db/fixtures/climate_divisions.csv