我需要合并此查询
SELECT
*,
(SELECT
CONCAT(c.firstname, ' ', c.lastname)
FROM
wwwpser_customer c
WHERE
c.customer_id = o.customer_id) AS customer
FROM
wwwpser_order o
WHERE
o.order_id = '20'
与
SELECT
orders . *, wwwpser_comuna.provincia_id AS payment_provincia_id
FROM
wwwpser_order orders
LEFT JOIN
wwwpser_comuna ON (orders.payment_city = wwwpser_comuna.comuna_id)
SQL语法对我来说是新的,所以我需要一点帮助,thx
答案 0 :(得分:1)
SELECT CONCAT(c.firstname, ' ', c.lastname)
, wc.provincia_id
, o.*
FROM wwwpser_order o
LEFT JOIN
wwwpser_customer c
ON c.customer_id = o.customer_id
LEFT JOIN
wwwpser_comuna wc
ON wc.comuna_id = o.payment_city
WHERE o.order_id = 20
答案 1 :(得分:0)
看起来这应该是你的解决方案。
SELECT
o.*, -- modified (qualified the
(SELECT -- asterisk)
CONCAT(c.firstname, ' ', c.lastname)
FROM
wwwpser_customer c
WHERE
c.customer_id = o.customer_id) AS customer,
c.provincia_id AS payment_provincia_id -- added from second query
FROM
wwwpser_order o
LEFT JOIN -- added from second query
wwwpser_comuna c ON (o.payment_city = c.comuna_id) -- added from second query
WHERE
o.order_id = '20'
但我强烈建议您学习一般的SQL语法。 MySQL tutorials
中有一些有用的示例