我试图用MySQL (InnoDb)存储一个货币值,我需要编写查询来聚合一些记录(sum),而且我对输出的精度有问题!我已经将字段的类型设置为双倍,并且我的值是精确的,但是MySQL的操作符并不像我所需要的那么精确。就其价值而言,PHP的默认操作符也不够精确,但是PHP中有一些bc*函数可以做到这一点。我想知道是否有任何方法来调...
我试图用MySQL (InnoDb)存储一个货币值,我需要编写查询来聚合一些记录(sum),而且我对输出的精度有问题!我已经将字段的类型设置为双倍,并且我的值是精确的,但是MySQL的操作符并不像我所需要的那么精确。就其价值而言,PHP的默认操作符也不够精确,但是PHP中有一些bc*函数可以做到这一点。我想知道是否有任何方法来调...
Re: sum in mysql Fernando Romero March 31, 2022 10:08AM Re: sum in mysql Phillip Ward April 04, 2022 07:21AM Re: sum in mysql Peter Brawley April 01, 2022 09:25AM Sorry, you can't reply to this topic. It has been closed....
Reporter:kinfei leeEmail Updates: Status:Not a BugImpact on me: None Category:MySQL Server: ParserSeverity:S2 (Serious) Version:4 and 5OS:Windows Assigned to:CPU Architecture:Any [14 Mar 2008 10:51] kinfei lee Description:device_id | SUM( a.quantity ) | SUM( b.quantity ) | SUM( sh...
Category:MySQL Server: JSONSeverity:S3 (Non-critical) Version:5.7.14, 5.7.17OS:CentOS (Centos6.8) Assigned to:CPU Architecture:Any Tags:sum [10 Feb 2017 5:08] Milton Lai Description:I found this when tracking a bug in the system I am recently working on. It seems the SUM() over JSON...
AVG() Syntax SELECTAVG(column_name) FROMtable_name WHEREcondition; TheSUM()function returns the total sum of a numeric column. SUM() Syntax SELECTSUM(column_name) FROMtable_name WHEREcondition; Demo Database Below is a selection from the "Products" table in the Northwind sample database: ...
SELECTdate,SUM(caseresultwhen'win'then1else0end)ASwin,SUM(caseresultwhen'lose'then1else0end)ASloseFROMinfoGROUPBYdateORDERBYdate; 测试完了,删除测试表: DROPTABLEinfo; 参考资料: http://www.yiibai.com/mysql/case-function.html http://www.cnblogs.com/yazdao/archive/2009/12/09/1620482.html ...
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I am new to MySQL so I thank you in advance for your help. I have a subscription table that contains subscriptions for a user. Each user could have multiple rows indicating their subscription history. Each rows in the subscription table contain "Date Created"=created_date and "Expiration Date...