query json array having only strings oracle - json

Question

Below is the json stored in a table called "Sample" and the column name is "argument". I want to fetch all those records having a particular value in a specified argument. I could query the argument name but not able to query a particular value as it is an array of strings. (Please find my keys have . in it)
{
"arguments":{
"app.argument1.appId":["123", "456"],
"app.argument2.testId":["546", "567"]
}
}
This gives me all the records having particular argument.
select * from sample where json_exists(argument, '$.arguments."app.argument1.appId"');
But I need to match argument value. I tried below but getting JSON expression error.
select * from sample where json_exists(argument, '$.arguments."app.argument1.appId[*]"?(# == "123"));
Please help. Thanks in advance.

Answer 1

You have the quotation marks in the wrong place; you want the double quotes before the square-brackets for the array instead of afterwards:
select *
from sample
where json_exists(
argument,
'$.arguments."app.argument1.appId"[*]?(# == "123")'
);
Which, for the sample data:
CREATE TABLE sample ( argument CLOB CHECK ( argument IS JSON ) );
INSERT INTO sample ( argument ) VALUES ( '{
"arguments":{
"app.argument1.appId":["123", "456"],
"app.argument2.testId":["546", "567"]
}
}');
Outputs:
| ARGUMENT |
| :----------------------------------------------------------------------------------------------------------------------- |
| {<br> "arguments":{<br> "app.argument1.appId":["123", "456"],<br> "app.argument2.testId":["546", "567"]<br> }<br>} |
db<>fiddle here
Do you know a way to do this in 12.1?
You could also use EXISTS with a correlated JSON_TABLE (which is available from Oracle 12c Release 1 (12.1.0.2)).:
select *
from sample
where EXISTS (
SELECT 1
FROM JSON_TABLE(
argument,
'$.arguments."app.argument1.appId"[*]'
COLUMNS (
value VARCHAR2(100) PATH '$'
)
)
WHERE value = '123'
);
db<>fiddle here