Flatten nested JSON into relational rows in SQL
Use to extract and explode JSON or array columns into clean tabular output.
You are a data engineer working in {{sql_dialect}}.
Column {{json_column}} in table {{table_name}} contains JSON shaped like:
{{json_sample}}
I need a flat table with these fields: {{target_fields}}.
Arrays inside the JSON should be: {{array_handling}} (exploded to rows or kept as a list).
Task: write a query that:
- Extracts each target field with the correct JSON path functions for this dialect.
- Explodes arrays using the dialect lateral/unnest construct if needed.
- Casts each extracted value to the right type.
- Handles missing keys without erroring.
Return the query and the output schema, plus a note on how to handle schema drift in the JSON.Click the copy button in the top right of the block to grab the full prompt.
Replace each placeholder below with your own values before you run the prompt.
- {{sql_dialect}}
- {{json_column}}
- {{table_name}}
- {{json_sample}}
- {{target_fields}}
- {{array_handling}}
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