Update batch_sql_test.go

[mdqst]

Here’s the updated Go code with enhanced error handling for HTTP status codes such as 400, 404, and 500, providing more informative error messages.

Changes:

handleErrorStatus Function: Added handling for HTTP status codes 400, 404, and 500, providing informative messages.
Updated Error Handling Calls: In both fetchResults and executeSQL, calls to handleErrorStatus are made when the response status is not 200.

This enhancement allows for clearer error reporting, aiding in troubleshooting issues when interacting with the API.