<s> from playhouse . migrate import PostgresqlMigrator , migrate <EOL> from redash . models import db <EOL> from redash import models <EOL> if __name__ == '<STR_LIT:__main__>' : <EOL> db . connect_db ( ) <EOL> migrator = PostgresqlMigrator ( db . database ) <EOL> with db . database . transaction ( ) : <EOL> migrate ( <EOL> migrator . add_column ( '<STR_LIT>' , '<STR_LIT>' , models . Query . last_modified_by ) <EOL> ) <EOL> db . database . execute_sql ( "<STR_LIT>" ) <EOL> db . close_db ( None ) </s>
