try to make snowflake assertManyTablesEqual faster
try to make snowflake assertManyTablesEqual faster

use "show columns" instead of selecting from the information schema
calculate numbers of rows while we calculate mismatched rows
use "show objects" instead of selecting from the information schema for get_models_in_schema

fishtown-analytics/dbt,analyst-collective/dbt,fishtown-analytics/dbt,fishtown-analytics/dbt,analyst-collective/dbt