title: How to retrieve all the catalog names , schema names and the table names in a database like snowflake or any such database?
body: <p>I need to drop some columns and uppercase the data in snowflake tables.
  For which I need to loop through all the catalogs/ dbs, its respective schemas and then the tables.
  I need this to be in python to list of the catalogs schemas and then the tables after which I will be exicuting the SQL query to do the manipulations.</p>
  <p>How to proceed with this?</p>
  <p>1.List all the catalog names</p>
  <p>2.List all the schema names</p>
  <p>3.List alll the table names</p>
  <p>I have established a connection using python snowflake connector</p>