docs: def get_crossmatch_catalogues_column_map(
          dbConn,
          log):
      """*Query the sherlock-catalogues helper tables to generate a map of the important columns of each catalogue*
  
      Within your sherlock-catalogues database you need to manually map the inhomogeneous column-names from the sherlock-catalogues to an internal homogeneous name-set which includes *ra*, *dec*, *redshift*, *object name*, *magnitude*, *filter* etc.
      The column-name map is set within the two database helper tables called `tcs_helper_catalogue_views_info` and `tcs_helper_catalogue_views_info`. See the *'Checklist for Adding A New Reference Catalogue to the Sherlock Catalogues Database'* for more information.
  
      .. todo::
  
          - write a checklist for adding a new catalogue to the sherlock database and reference it from here (use the image below of the tcs_helper_catalogue_views_info table)
  
      .. image:: https://farm5.staticflickr.com/4604/38429536400_eafa991580_o.png
          :width: 200 px
  
      **Key Arguments:**
          - ``dbConn`` -- the sherlock-catalogues database connection
          - ``log`` -- logger
  
      **Return:**
          - ``colMaps`` -- dictionary of dictionaries with the name of the database-view (e.g. `tcs_view_agn_milliquas_v4_5`) as the key and the column-name dictary map as value (`{view_name: {columnMap}}`).
  
      **Usage:**
  
          To collect the column map dictionary of dictionaries from the catalogues database, use the ``get_crossmatch_catalogues_column_map`` function:
  
          .. code-block:: python 
  
              from sherlock.commonutils import get_crossmatch_catalogues_column_map
              colMaps = get_crossmatch_catalogues_column_map(
                  log=log,
                  dbConn=cataloguesDbConn
              )
      """
      log.debug('starting the ``get_crossmatch_catalogues_column_map`` function')
  
      # GRAB THE NAMES OF THE IMPORTANT COLUMNS FROM DATABASE
      sqlQuery = u"""
          SELECT 
              *
          FROM
              tcs_helper_catalogue_views_info v,
              tcs_helper_catalogue_tables_info t
          WHERE
              v.table_id = t.id
      """ % locals()
      rows = readquery(
          log=log,
          sqlQuery=sqlQuery,
          dbConn=dbConn,
          quiet=False
      )
      colMaps = {}
      for row in rows:
          colMaps[row["view_name"]] = row
  
      log.debug('completed the ``get_crossmatch_catalogues_column_map`` function')
      return colMaps