Using google query to download parts of a published sheet - google-sheets

Question

This works:
curl 'https://docs.google.com/spreadsheets/d/e/2PACX-1vS3iBtVf4i_won5zAN9NGPqhcd6CcTb-4QHxpisSjCmlgV95B6mFmZvtMaC9GPvD7m8kD-6XLkVAhfc/pub?gid=911257845&single=true&output=csv'
however I want to only pick up rows where count > 300.
The query before encoding would be
select * where F > 300
After encoding
select%20*%20where%20F%3E300
So the url becomes
https://docs.google.com/spreadsheets/d/e/2PACX-1vS3iBtVf4i_won5zAN9NGPqhcd6CcTb-4QHxpisSjCmlgV95B6mFmZvtMaC9GPvD7m8kD-6XLkVAhfc/pub?gid=911257845&output=csv&tq=select%20*%20where%20F%3E300
The line above works retrieves a file, but it returns the whole file, and doesn't filter.
Note that a published web sheet has the form
https://docs.google.com/spreadsheets/d/e/KEY/pub?gid=GID
https://docs.google.com/spreadsheets/d/e/2PACX-1vS3iBtVf4i_won5zAN9NGPqhcd6CcTb-4QHxpisSjCmlgV95B6mFmZvtMaC9GPvD7m8kD-6XLkVAhfc/pub?gid=911257845
This works. Adding &output=csv to it (no space before the &) works, and it downloads as a csv file. This opens in excel and shows the data in the table.
I tried this:
https://docs.google.com/spreadsheets/d/e/2PACX-1vS3iBtVf4i_won5zAN9NGPqhcd6CcTb-4QHxpisSjCmlgV95B6mFmZvtMaC9GPvD7m8kD-6XLkVAhfc/pub?gid=911257845&output=csv&tq=select%20*%20where%20F%3E%20300
and
https://docs.google.com/spreadsheets/d/e/2PACX-1vS3iBtVf4i_won5zAN9NGPqhcd6CcTb-4QHxpisSjCmlgV95B6mFmZvtMaC9GPvD7m8kD-6XLkVAhfc/gviz/tq?gid=911257845&output=csv&tq=select%20*%20where%20F%3E300
and get errors -- resource not available.
The page above should be public for people who want to try.
This may be an issue between publishing a sheet, and sharing a whole spread sheet to anyone who has the link.
I've created a new page that uses importrange() that slurps up the page from the main sheet, and that one is public.
https://docs.google.com/spreadsheets/d/1-lqLuYJyHAKix-T8NR8wV8ZUUbVOJrZTysccid2-ycs/edit?usp=sharing

Answer 1

How about this modification?
Modification points :
When it uses query, please use like https://docs.google.com/spreadsheets/d/### file ID ###/gviz/tq?gid=###&tq=### query ###.
When select%20*%20where%20%F%3E300 is decoded, it is select * where %F>300.
select * where F > 300 is select%20%2a%20where%20F%20%3e%20300.
In order to output CSV, please use tqx=out:csv.
Please share the Spreadsheet.
On Google Drive
On the Spreadsheet file
right-click -> Share -> Advanced -> Click "change" at "Private - Only you can access"
Check "On Anyone with the link"
Click "Save"
At "Link to share", copy URL.
Retrieve file ID from https://docs.google.com/spreadsheets/d/### file ID ###/edit?usp=sharing
Modified curl command :
curl 'https://docs.google.com/spreadsheets/d/### file ID ###/gviz/tq?gid=911257845&tq=select%20%2a%20where%20F%20%3e%20300&tqx=out:csv'
Reference :
Query Language Reference
If I misunderstand your question, I'm sorry.
Edit :
The following 2 URLs are the comparison between your URL and my answer. The URL of my answer was matched to your URL.
1. Your URL
https://docs.google.com/spreadsheets/d/e/2PACX-1vS3iBtVf4i_won5zAN9NGPqhcd6CcTb-4QHxpisSjCmlgV95B6mFmZvtMaC9GPvD7m8kD-6XLkVAhfc/gviz/tq?gid=911257845&output=csv&tq=select%20*%20where%20F%3E300
When above URL is separated,
https://docs.google.com/spreadsheets/d/e/
e/ is not required.
2PACX-1vS3iBtVf4i_won5zAN9NGPqhcd6CcTb-4QHxpisSjCmlgV95B6mFmZvtMaC9GPvD7m8kD-6XLkVAhfc
This is not the file ID of spreadsheet.
/gviz/tq
gid=911257845
output=csv
tq=select%20*%20where%20F%3E300
2. In my answer matched to your URL
https://docs.google.com/spreadsheets/d/### file ID ###/gviz/tq?gid=###&tqx=out:csv&tq=### query ###
When above URL is separated,
https://docs.google.com/spreadsheets/d/
### file ID ###
You can see the detail of the file ID of spreadsheet at here.
/gviz/tq
gid=###
You can use gid=911257845.
tqx=out:csv
This has to be used instead of output=csv.
tq=### query ###
You can use tq=select%20*%20where%20F%3E300.
Note :
Each number corresponds.
And please share the Spreadsheet as follows. This is difference from "Publish to the web" on Spreadsheet.
On Google Drive
On the Spreadsheet file
right-click -> Share -> Advanced -> Click "change" at "Private - Only you can access"
Check "On Anyone with the link"
Click "Save"
At "Link to share", copy URL.
Retrieve file ID from ``https://docs.google.com/spreadsheets/d/###