2203F
PostgreSQLERRORNotableData ExceptionHIGH confidence
SQL/JSON scalar required
What this means
SQLSTATE 2203F is raised when a SQL/JSON context requires a scalar value (string, number, boolean, or null) but receives a JSON array or object.
Why it happens
- 1A SQL/JSON operation that requires a scalar receives a compound JSON value (array or object)
How to reproduce
SQL/JSON scalar context receiving an array.
expected output
ERROR: SQL/JSON scalar required
Fix
Navigate to the scalar value within the JSON structure
WHEN When the path resolves to a container but a scalar is needed.
Navigate to the scalar value within the JSON structure
-- Navigate deeper into the JSON to reach a scalar:
SELECT jsonb_path_query('{"x":{"y":42}}'::jsonb, '$.x.y');Why this works
Adjust the path expression to select the specific scalar field rather than the containing object.
Version notes
Postgres 14+
SQL/JSON scalar type checking added in Postgres 14.
Sources
Official documentation ↗
Class 22 — Data Exception
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