為什么相同的postgres查詢對兩位數不起作用？

我正在使用postgres數據庫作為我的應用程序。

我有以下數據

    create table contacts (
        id int,
        contact_data jsonb
    );
    
    insert into contacts values
    (1,   '{
        "tags": [
            "MOCK_DATA (4)"
        ],
        "Email": "nk3ynman5@marriott.com",
        "reach": false,
        "Gender": "Male",
        "Interest": [
            "Dance"
        ],
        "Last Name": "Kynman",
        "First Name": "Nicko"
    }'),
    (2,   '{
        "ltv": "6",
        "City": "Bengaluru",
        "Email": "aaa@aa.com",
        "State": "Karnataka",
        "Country": "India",
        "latitude": 12.9715987,
        "Last Name": "World",
        "longitude": 77.5945627,
        "First Name": "Helo"
    }'),
    (3,   '{
        "ltv": "11",
        "Email": "sf3ortye8@ebay.co.uk",
        "reach": false,
        "Gender": "Female",
        "Country": "United States",
        "latitude": "37.09024",
        "Last Name": "Fortye",
        "longitude": "-95.712891",
        "First Name": "Sissie"
    }');

    Select * from contacts;
    
    +====+==================================================================================================================================+
    | id | contact_data                                                                                                                     |
    +====+==================================================================================================================================+
    | 1  | {"tags": ["MOCK_DATA (4)"], "Email": "nk3ynman5@marriott.com", "reach": false, "Gender": "Male", "Interest": ["Dance"], "Last... |
    +----+----------------------------------------------------------------------------------------------------------------------------------+
    | 2  | {"ltv": "6", "City": "Bengaluru", "Email": "aaa@aa.com", "State": "Karnataka", "Country": "India", "latitude": 12.9715987, "L... |
    +----+----------------------------------------------------------------------------------------------------------------------------------+
    | 3  | {"ltv": "11", "Email": "sf3ortye8@ebay.co.uk", "reach": false, "Gender": "Female", "Country": "United States", "latitude": "3... |
    +----+----------------------------------------------------------------------------------------------------------------------------------+

我正在嘗試獲取ltv在2到9之間的id。它有一張唱片。哪個是正確的

    SELECT id from contacts where ( contact_data->> 'ltv' > '2' and contact_data->> 'ltv' < '9' );
    +====+
    | id |
    +====+
    | 2  |
    +----+

Issue:

現在我嘗試在2到12之間，這應該會給出2條記錄，但是它會給出0個數據。

SELECT id from contacts where ( contact_data->> 'ltv' > '2' and contact_data->> 'ltv' < '12' );

誰能告訴我這里有什么問題嗎。為什么我得不到價值？這里是sql-fiddle