所以我有这个: SELECT
MONTH(trans_date) AS Month_Booking,
count(transact_no) AS NumTransactions,
(price * count(transact_no)) AS TotalRevenue
FROM transaction t
JOIN service s ON t.service_n
我执行的查询结果中没有空值。下面是我query SELECT
sur.id AS 'Survey ID',
DATE (sur.capture_date) AS 'Date',
sur.sub_division AS 'Sub-Div',
sd.name AS 'Sub-Div Name',
sd.`circle_name` AS 'Circle
我想从一个MYSQL数据库复制架构到其他MYSQL数据库。虽然这样做几张桌子给人的问题如下 Error Code: 1064
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(
SELECT month(dateofappointment), COUNT(*) 'NumberOfAppointments'
FROM appointment
WHERE YEAR(dateofappointment) = '2016'
GROUP BY MONTH(dateofappointment)
这显示我所有月份,但十二月不存在,因为那一年没有任何约会
我这样的查询: SELECT a.id, a.store_id, a.name, a.total_sold, a.updated_at, b.name AS store_name
FROM products a
JOIN stores b ON b.id = a.store_id
JOIN products_categories c ON c.product_id = a.id
WHERE