How to extract values from json field using JSON_VALUE() in SQL

We can extract a scalar value from json string in sql SELECT query.

Syntax :

JSON_VALUE ( expression ,[Path Mode] JSON_path )

• Expression: This is the table field/column name or a variable that contains json values. It should be a valid expression, and else it returns an error
• JSON_Path: It is the location of a scalar value in the JSON string
• Path mode:  We can specify the lax or strict value in this mode. It uses LAX as a default path mode. We will understand it using examples. It is an optional argument.

Query Example :

SELECT json_value(json_field,'$.title') AS title FROM json_sample;

Output :

This will return value of the key title from the json string stored in json_field

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