[英]The result of query mysql output "if exists" in stored procedure with "select exist" is different
[英]Stored procedure and select query return different result in MySQL
我正在使用 MySQL 和 MySQL 工作台。
這是我的存儲過程:
CREATE DEFINER=`root`@`%` PROCEDURE `sms_stats`(
IN fromDate VARCHAR(8),
IN toDate VARCHAR(8),
IN smsCost VARCHAR(8),
OUT bank_id int,
OUT bank_name VARCHAR(100),
OUT totalSms VARCHAR(20),
OUT totalCost VARCHAR(20)
)
BEGIN
SELECT c.bank_id as bank_id,
b.name as bank_name,
count(c.bank_id) as totalSms,
(count(c.bank_id) * smsCost) as totalCost
FROM calendar c
LEFT JOIN banks b on c.bank_id = b.id
WHERE sms_sent = 1
AND sms_sent_datetime >= fromDate
AND sms_sent_datetime <= toDate
GROUP BY bank_id, bank_name;
END
為什么存儲過程返回(我執行:調用 prenotabanca.sms_stats('20220101', '20220420', '0.08', @bank_id, @bank_name, @totalSms, @totalCost);)一個不同的結果
SELECT c.bank_id as bank_id,
b.name as bank_name,
count(c.bank_id) as totalSms,
(count(c.bank_id) * '0.08') as totalCost
FROM prenotabanca.calendar c
LEFT JOIN prenotabanca.banks b on c.bank_id = b.id
WHERE sms_sent = 1
AND sms_sent_datetime >= '20220101'
AND sms_sent_datetime <= '20220420'
GROUP BY bank_id, bank_name;
我解決了,問題出在 group by 上,我沒有使用別名,列 bank id 包含在幾個表中。
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