I was not able to run SQL file also. Im getting same errors
Failed: 6
ERROR: Cannot ADD column products_weight_type because it already exists.
ERROR: Cannot ADD column products_dim_type because it already exists.
ERROR: Cannot ADD column products_length because it already exists.
ERROR: Cannot ADD column products_width because it already exists.
ERROR: Cannot ADD column products_height because it already exists.
ERROR: Cannot ADD column products_ready_to_ship because it already exists.
Note: 6 statements ignored. See "upgrade_exceptions" table for additional details.

Please let me know what should I do step by step since I'm new to ZC