21.20 GET_CLOB Function

This function returns clob member value. This function auto-converts varchar2, boolean and number values.

Syntax

get_clob (
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_default in clob default null,
p_values  in t_values default g_values )
return clob

Parameters

Table 21-23 GET_CLOB Function Parameters

Parameter	Description
p_values	Parsed json members. defaults to g_values.
p_path	Index into p_values.
p[0-4]	Each %N in p_path will be replaced by pN and every i-th %s or %d will be replaced by the p[i-1].
p_default	Default value if the member does not exist.

Returns/Raised Errors

Table 21-24 GET_CLOB Function Returns and Raised Errors

Return/Raised Errors	Description
a clob	Value at the given path position
VALUE_ERROR	If p_values(p_path) is an array or an object

Example

Parse a JSON string and print the value at a position.

declare
    j apex_json.t_values;
begin
    apex_json.parse(j, '{ "items": [ 1, 2, { "foo": 42 } ] }');
    dbms_output.put_line(apex_json.get_clob (
    p_values => j,
    p_path => 'items[%d].foo',
    p0 => 3));
end;