Issues with asset transformation code In working with CDF: Integrate, I am trying to transform the asset csv file using the following code: SELECTconcat('Ruby2001:',loc) as externalId,IF(parent_loc='' OR parent_loc IS NULL, '', concat('Ruby2001:',parent_loc)) AS parentExternalId,CAST(lastUpdatedTime AS STRING) AS name,to_metadata(*) AS metadata,description AS description,2869936105026304 AS dataSetId FROM `Ruby2001`.assets However I keep getting this error message: Column 'parent_loc' does not exist. Did you mean one of the following? [z6eecbaa9603c4ee195055fe6aaeb89a3.loc, z6eecbaa9603c4ee195055fe6aaeb89a3.key, z6eecbaa9603c4ee195055fe6aaeb89a3.name, z6eecbaa9603c4ee195055fe6aaeb89a3.parent_loc,,, z6eecbaa9603c4ee195055fe6aaeb89a3.WMT_TAG_ID, z6eecbaa9603c4ee195055fe6aaeb89a3.description, z6eecbaa9603c4ee195055fe6aaeb89a3.WMT_SYSTEM_ID, z6eecbaa9603c4ee195055fe6aaeb89a3.lastUpdatedTime]; line 3 pos 3; 'Project [concat(Ruby2001:, loc#41009138) AS externalId#41009101, 'IF((('parent_loc = ) OR isnull('parent_loc)), , 'conca