在Mariadb中为3表查询添加另一个条件

Question

当前查询

SELECT vcc.name AS item, vcc.prodid, vcc.quantity AS qty,
       UPPER(vcc.custom_message) AS nickname, vfd1.value AS fullname,
       vfd2.value as email, vcc.purchaseid, vcc.price
FROM vxu_4_wpsc_cart_contents AS vcc INNER JOIN
     vxu_4_wpsc_submited_form_data AS vfd1
     ON vcc.purchaseid = vfd1.log_id AND vfd1.form_id = 2 INNER JOIN
     vxu_4_wpsc_submited_form_data AS vfd2
     ON vcc.purchaseid = vfd2.log_id AND vfd2.form_id = 9

我想要添加条件＆＃39;处理过的条件＆＃39;在表格＆＃39; vxu_4_wpsc_purchase_logs是＆＃39; 2＆＃39;，因此只返回已完成的销售。我正在努力学习逻辑/语法。希望图像可读。

Answer 1

试试这个。我已按id加入了表purchase_logs，并按列processed过滤了结果集，其值等于2

SELECT vcc.name AS item, 
       vcc.prodid, 
       vcc.quantity AS qty,
       UPPER(vcc.custom_message) AS nickname, 
       vfd1.value AS fullname,
       vfd2.value as email, 
       vcc.purchaseid, 
       vcc.price
FROM vxu_4_wpsc_cart_contents AS vcc 
    INNER JOIN vxu_4_wpsc_submited_form_data AS vfd1 ON vcc.purchaseid = vfd1.log_id 
                                                            AND vfd1.form_id = 2 
    INNER JOIN vxu_4_wpsc_submited_form_data AS vfd2 ON vcc.purchaseid = vfd2.log_id 
                                                            AND vfd2.form_id = 9
    INNER JOIN vxu_4_wpsc_purchase_logs AS wpl ON wpl.id = vcc.purchaseid
WHERE wpl.processed = 2