JSON JSON_EXTRACT with MySQL

Question

I'm using the JSON_EXTRACT with MYSQL and using this command:

SET @j = '{"id" : "1"}';
SELECT JSON_EXTRACT(@j, '$.id')

the result is

"1"

but, when I use

SET @j = '[{"id" : "1"}, {"id" : "2"}]';
SELECT JSON_EXTRACT(@j, '$.id')

the result is

NULL

I expected this result

"1"
"2"

Any sugestion? I want the list of ID'S from JSON.

Answer 1

try this:

SET @j = '[{"id" : "1"}, {"id" : "2"}]';
SELECT JSON_EXTRACT(@j,'$[*].id')

the result is:

["1", "2"]