在PostgreSQL上的jsonb上使用通配符查询

Question

I have a table test_jsonb like this:

id:integer, meta_data jsonb, version int

the table has data as follows:

{"id": 99, "file_name": "test.pdf"}
{"id": 101, "file_name": "test2.pdf"}

i want to query all the files that has file_name = test.pdf. how do i do it? cant find any good example. please help.

thanks in advance.

Answer 1

Query for files named "test.pdf"

SELECT *
FROM test_jsonb
WHERE meta_data->>'file_name' = 'test.pdf'

Query for test files with all extensions

SELECT *
FROM test_jsonb
WHERE meta_data->>'file_name' LIKE 'test.%'

Query for files with ".pdf" extension

SELECT *
FROM test_jsonb
WHERE meta_data->>'file_name' LIKE '%.pdf'