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    Fix BigQuery: Field name contains invalid characters

    BigQuery only accepts letters, numbers, and underscores in field names.

    Why this happens

    Source JSON often includes keys like 'user-id', 'first name', or '$meta', which violate BigQuery naming rules.

    How to fix it

    1. Rename fields to snake_case using only letters, numbers, and underscores.
    2. Ensure field names do not start with a number.
    3. Regenerate your schema before creating/loading the table.

    Automate this with BRYCK LABS

    Instead of repeating manual checks, run this through the BRYCK LABS JSON to BigQuery Schema Generator to validate and fix faster.

    Open JSON to BigQuery Schema GeneratorBrowse All Tools