错误 => #1242 - 子查询返回多于 1 行

Question

I am selecting order data from my orders table with that i also need the order product's count which contain specific word

Account TopUp 200,
Account TopUp 500,
Account TopUp 1000,

The order contain multipal product means one order contain both(Account TopUp 200, Account TopUp 500) and other products

I made subquery for this

            (
                    SELECT COUNT(orderprodid)
                    FROM order_products
                    WHERE orderorderid=orderid AND ordprodname like '%Account TopUp%'
                ) AS  orderproductcount

But it gives Error: #1242 - Subquery returns more than 1 row

Full query is:

SELECT o.*,
                    (
                        SELECT COUNT(messageid)
                        FROM order_messages
                        WHERE messageorderid=orderid
                    ) AS nummessages,
                    (
                        SELECT COUNT(messageid)
                        FROM order_messages
                        WHERE messageorderid=orderid AND messagestatus != 'read'
                    ) AS numunreadmessages,
                    (
                        SELECT COUNT(messageid)
                        FROM order_messages
                        WHERE messageorderid=orderid AND messagefrom='customer' AND messagestatus='unread'
                    ) AS newmessages,
                    (
                        SELECT orderproapi
                        FROM order_products
                        WHERE orderorderid=orderid
                    ) AS  orderproapi,
                    (
                        SELECT COUNT(orderprodid)
                        FROM order_products
                        WHERE orderorderid=orderid AND ordprodname like '%Account TopUp%'
                    ) AS  orderproductcount
                FROM orders o
                LEFT JOIN customers c ON (o.ordcustid=c.customerid)
                LEFT JOIN order_status s ON (s.statusid=o.ordstatus)

Answer 1

The subquery you highlighted in your question actually doesn't have any problem with it and won't cause the error message you are seeing. But this subquery will:

(
    SELECT orderproapi
    FROM order_products
    WHERE orderorderid = orderid
) AS orderproapi,

This subquery will most likely return multiple records/values, and therefore makes no sense appearing in the SELECT clause. Fix this problem and your query should work.