Published on May 18, 2008
Agility Incrementally improve your schema
$ script/generate migration create_bids
$ script/generate migration create_bids $RAILS_ROOT/db/migrate/001_create_bids.rb
$ rake db:migrate
$ rake db:migrate $ rake db:migrate VERSION=0
Transformations create_table(name, options) drop_table(name) add_column(table_name, column_name, type, options) remove_column(table_name, column_name)
More... rename_table(old_name, new_name) rename_column(table_name, column_name, new_column_name) change_column(table_name, column_name, type, options)
And then some. add_index(table_name, column_names, index_type, index_name) remove_index(table_name, index_name)
I'm Abhi from Cogent Consulting. Thank You.
$RAILS_ROOT/db/migrate/001_create_bids.rb $ rake db:migrate VERSION=N
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