在mySQL WHERE子句中使用LIKE

Question

I am trying to SELECT data WHERE the Name contains Christina using the following query, but it is returning all data, not only Christina .

SELECT a.id_transaksi, a.total_harga, (
        SELECT c.id_transfer
        FROM tbl_transfer c
        WHERE c.id_transaksi = a.id_transaksi
        ) AS id_transfer, (
        SELECT d.nama
        FROM tbl_costumer d
        WHERE d.username = a.username
        ) AS nama_costumer
FROM tbl_faktur a, tbl_transfer c, tbl_costumer d
WHERE a.konfirm_user = 1
    AND d.nama LIKE '%christina%'
GROUP BY a.id_transaksi
ORDER BY a.id_transaksi DESC

Answer 1

You don't need subqueries. join the tables with the appropriate conditions and it should work.

SELECT
a.id_transaksi, a.total_harga,  
c.id_transfer id_transfer,
d.nama as nama_costumer
FROM tbl_faktur a 
JOIN tbl_transfer c on c.id_transaksi = a.id_transaksi
JOIN tbl_costumer d on d.username = a.username
WHERE a.konfirm_user = 1 
AND d.nama LIKE '%christina%'
ORDER BY a.id_transaksi DESC 

Answer 2

Your only filter on the 'top-level' query is c.id_transaksi = a.id_transaksi . You'll need to join against tbl_costumer , then filter on that to see the result you're expecting. I don't know the relationships between your customer/transfer table, but there's likely a customer_id on tbl_transfer , which should get you to the costumer table.

Answer 3

I have found the answer, just adding EXSIST to WHERE clause...

SELECT a.id_transaksi, a.total_harga, a.total_berat, a.kurir, a.servis, a.resi, a.konfirm_user, a.konfirm_admin, a.date_user, a.ongkir, (   
                SELECT  c.id_transfer
                FROM tbl_transfer c
                WHERE c.id_transaksi = a.id_transaksi
                ) AS id_transfer, (

                SELECT  d.nama
                FROM tbl_costumer d
                WHERE d.username = a.username
                ) AS nama_costumer, (

                SELECT  d.provinsi_asal
                FROM tbl_costumer d
                WHERE d.username = a.username
                ) AS provinsi_asal, (

                SELECT  d.kota_asal
                FROM tbl_costumer d
                WHERE d.username = a.username
                ) AS kota_asal, (

                SELECT  d.alamat
                FROM tbl_costumer d
                WHERE d.username = a.username
                ) AS alamat, (

                SELECT  d.tlp
                FROM tbl_costumer d
                WHERE d.username = a.username
                ) AS tlp

            FROM tbl_faktur a,  tbl_transfer c, tbl_costumer d
            WHERE a.konfirm_user=1 AND exists (SELECT d.nama from tbl_costumer d  where a.username=d.username and d.nama like '%$keyword%') 
            GROUP BY a.id_transaksi
            ORDER BY a.id_transaksi DESC