Google Drive API Limit on search query parameter

Question

I have lots of sub-folders and here is my code for searching

"trashed = false 
AND ( ".$folderIds." ) 
AND mimeType != 'application/vnd.google-apps.folder'"

where the $folderIds are the subfolders, ex:

0B_123dSaMpleFolderId1 in parents or 0B_123dSaMpleFolderId2 in parents and 300 more folders

I know that limits are already posted here: What is the limit on Google Drive API usage?

but I would like to know the limits for this.. of how long should the parameter be when sending it to google drive api

Answer 1

The Google Drive API v3 allowed me to search within 598 folders:

len(gdrive.search(
    f"mimeType!='application/vnd.google-apps.folder' and 
    ({build_folder_subquery(folders[0:598])})"
))

713

but not 599:

len(gdrive.search(
    f"mimeType!='application/vnd.google-apps.folder' and 
    ({build_folder_subquery(folders[0:599])})"
))
*** googleapiclient.errors.HttpError: <HttpError 400 when requesting https://www.googleapis.com/drive/v3/files returned "The query is too complex.">

I don't know whether the 'query is too complex' error is triggered by the number of operators in the query, by the number of characters in the query, or by some other measure. The number of characters in the queries above are 29949 and 29999.