json_valid

Description

The json_valid function is used to verify whether a given string conforms to JSON format specifications. It is important to note that some strings (such as '1') represent valid JSON numbers, but they do not directly meet the JSON format requirements as strings. This function ensures that the string is a valid JSON object or array.

Parameter Description

str: The string to be validated.

Return Value

Returns a boolean value indicating whether the input string is in valid JSON format.

true: The input string is in valid JSON format.
false: The input string is not in valid JSON format.

Usage Example

The following example demonstrates how to use the json_valid function to determine whether different strings conform to JSON format.

<Notes> ```sql -- Valid JSON number SELECT json_valid('1') AS t;

-- Valid JSON object SELECT json_valid('{}') AS t;

-- Valid JSON array SELECT json_valid('[]') AS t;

-- Valid JSON object with key-value pair SELECT json_valid('{"a": 1}') AS t;

-- Invalid JSON format (empty key name) SELECT json_valid('{[]}') AS f;

-- Valid JSON array containing an object SELECT json_valid('[{}]') AS t;

-- String represents a valid JSON number, but as a string does not meet JSON format requirements SELECT json_valid('"1"') AS f;


## Result Interpretation
- `true` indicates that the input string is a valid JSON format.
- `false` indicates that the input string is not a valid JSON format.

Through the above example, you can understand how to use the `json_valid` function to verify whether various strings meet the JSON format requirements. This is very useful when handling JSON data, as it ensures the accuracy and validity of the data.