Gustavo de Morais created FLINK-40268:
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Summary: Add new JSON_TYPE built-in function
Key: FLINK-40268
URL: https://issues.apache.org/jira/browse/FLINK-40268
Project: Flink
Issue Type: New Feature
Components: Table SQL / API
Reporter: Gustavo de Morais
Assignee: Gustavo de Morais
Add a new bult-in function JSON_TYPE(jsonValue) that returns a string value
indicating the type of jsonValue. The possible results are OBJECT, ARRAY,
STRING, INTEGER, LONG, FLOAT, DOUBLE, BOOLEAN and DATE, plus the string 'NULL'
for the JSON null literal, which is distinct from a SQL NULL result. Also
returns NULL if the input is NULL or is not valid JSON.
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