23.12 GET_COUNT Function
This function returns the number of array elements or object members.
Syntax
APEX_JSON.GET_COUNT (
p_path IN VARCHAR2,
p0 IN VARCHAR2 DEFAULT NULL,
p1 IN VARCHAR2 DEFAULT NULL,
p2 IN VARCHAR2 DEFAULT NULL,
p3 IN VARCHAR2 DEFAULT NULL,
p4 IN VARCHAR2 DEFAULT NULL,
p_values IN t_values DEFAULT g_values )
RETURN NUMBER;
Parameters
Table 23-8 GET_COUNT Function Parameters
Parameter | Description |
---|---|
|
Index into |
|
Each %N in |
|
Parsed JSON members. The default is |
Returns/Raised Errors
Table 23-9 GET_COUNT Function Returns and Raised Errors
Return | Description |
---|---|
|
The number of array elements or object members or null if the array or object could not be found |
|
Raises this error if |
Example
This example parses a JSON string and prints the number of members at positions.
DECLARE
j apex_json.t_values;
BEGIN
apex_json.parse(j, '{ "foo": 3, "bar": [1, 2, 3, 4] }');
dbms_output.put_line(apex_json.get_count(p_path=>'.',p_values=>j)); -- 2 (foo and bar)
dbms_output.put_line(apex_json.get_count(p_path=>'bar',p_values=>j)); -- 4
END;
Parent topic: APEX_JSON