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Alembic - Using composite primary keys causes incorrect table definition in MySQL

I have multiple "versioned" database SQLAlchemy models that use composite primary keys, achieved by ...

From [MySQLdiscussion group] 2023-07-24 22:17:01 0  1  848

mysql分表之后怎么查詢

表結構包含id，week，hot，按周切成7張表，每張表代表一周的第幾天，week代表第幾周，怎么查詢第n周hot排名前十的記錄？

From [MySQLdiscussion group] 2017-04-17 14:49:20 0  5  848

linux - 故障發(fā)生后如何確保mysql數(shù)據(jù)不丟失？

如題， 最近遇到了一個問題，mysql數(shù)據(jù)庫損壞，最后通過myisamchk修復的。 有個疑問， mysql數(shù)據(jù)庫的定時備份只是用來做大型突發(fā)事件的事后處理， 并且會丟失從最后一次備份到事故發(fā)生的數(shù)據(jù)， 目前已知的辦法是...

From [MySQLdiscussion group] 2017-04-17 11:49:28 0  2  848

How to enable remote access to mysql docker's root user in docker-compose file?

Currently I'm using the following simple YAML file to start a MySQL server version:'3.3'services:db:image:mysq...

From [MySQLdiscussion group] 2023-09-06 13:10:11 0  1  847

mysql in 查詢， 里面的每個條件都指定返回條數(shù)，能否實現(xiàn)，怎么寫？

mysql in 查詢， 里面的每個條件都指定返回條數(shù)，能否實現(xiàn)，怎么寫？ {代碼...} table_name 里面包含value1和value2的值有很多條，能否指定返回條數(shù)。 類似： {代碼...} 或有其他方法實...

From [MySQLdiscussion group] 2017-04-17 16:13:28 0  2  847

mysql里show full processlist，進程很少

APP和網(wǎng)站每時每刻都有人在訪問，只是量不多，但在mysql里show full processlist，卻只有幾個進程，這是什么原因？

From [MySQLdiscussion group] 2017-04-17 15:14:42 0  1  847

mysql - SQL中JOIN與子查詢的優(yōu)劣

我是個MySQL新手，在涉及多表查詢時，喜歡使用子查詢，簡單易懂。 {代碼...} 但也發(fā)現(xiàn)很多人用JOIN同樣能實現(xiàn)查詢結果，我想知道JOIN相比子查詢，在性能方面有什么優(yōu)勢嗎？ 我該如何理解JOIN語句呢？

From [MySQLdiscussion group] 2017-04-17 11:06:02 0  9  847

TypeLoadException: Method 'Create' not found in type 'MySql.Data.EntityFrameworkCore.Query.Internal.MySQLSqlTranslatingExpressionVisitorFactory'

I'm trying to add a new user to the database using the following code: publicasyncvoidSeedUsers(){intcount=0;i...

From [MySQLdiscussion group] 2023-10-22 20:34:52 0  1  846

PHP: Import .SQL data files and manage maximum execution time

I'm trying to import a large .sql data file using phpMyAdmin in XAMPP. However, this takes a lot of time and I...

From [MySQLdiscussion group] 2023-10-15 08:34:47 0  1  846

How to insert records extracted from another table into one table

I'm trying to write a query that extracts and transforms data from a table and then inserts that data into ano...

From [MySQLdiscussion group] 2023-10-10 17:36:09 0  2  846

How to match strings with appended parts using Python, but not match them if their appended parts are different

How to match strings with appended parts, but not match them if they have different appended parts? For exampl...

From [MySQLdiscussion group] 2023-09-20 19:02:23 0  1  846

The problem of group by in Mysql. .

In Mysql, the following writing method is allowed. But is it strict or not? Does it support writing like this?...

From [MySQLdiscussion group] 2017-05-18 10:52:23 0  9  846

android - 安卓做前端，PHP做后臺服務器 有什么需要注意的？

最近打算和學安卓的朋友通過json交互，一起寫個成品出來，因為是第一次開發(fā)項目，所以沒什么經(jīng)驗 如何保證交互數(shù)據(jù)的安全（要不要用到HTTPS或是其他傳輸什么的） 對當前安卓端的驗證 百度上找不到，所以問問論壇...

From [MySQLdiscussion group] 2017-04-17 16:52:14 0  4  846

macos - 用mac 的包管理工具brew安裝mysql總是報錯是神馬問題？求解

{代碼...} 神馬問題呢？

From [MySQLdiscussion group] 2017-04-17 13:25:39 0  4  846

想做mongodb和mysql的性能對比，應該使用什么軟件或者方式對性能數(shù)據(jù)收集

想對性能測試以及監(jiān)測有所認識

From [MySQLdiscussion group] 2017-04-17 11:15:43 0  1  846