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Database design - mysql database integration

For two mysql libraries with the same partial tables, I think I can specify the corresponding relationship bet...

From [MySQLdiscussion group] 2017-05-18 10:53:24 0  1  815

java - How to modify related tables

Attribute table attr Product table item association table item_attr Attribute table fields cat_id, title Produ...

From [MySQLdiscussion group] 2017-05-18 10:44:26 0  3  815

mysql主從架構(gòu)，主服務(wù)器故障怎么辦？

問題一：master數(shù)據(jù)庫(kù)故障，然后slave數(shù)據(jù)庫(kù)頂上，將所有請(qǐng)求轉(zhuǎn)發(fā)給slave數(shù)據(jù)庫(kù)，這個(gè)操作是不是要引入另外的軟件來控制？比如負(fù)載均衡來檢測(cè)，master數(shù)據(jù)庫(kù)或者slave數(shù)據(jù)庫(kù)是否故障，然后備機(jī)激活？ 問題二...

From [MySQLdiscussion group] 2017-04-17 11:37:19 0  1  815

硬件 - MySQL服務(wù)器CPU配置的問題

想到一個(gè)問題，數(shù)據(jù)庫(kù)服務(wù)器的CPU到底需不需要高主頻高線程？這個(gè)問題以前一直沒有深入研究過啊。 理論上來說，應(yīng)用數(shù)據(jù)庫(kù)服務(wù)器一般不會(huì)運(yùn)行復(fù)雜的大數(shù)據(jù)量查詢，因此需要更多的線程數(shù)來提高并發(fā)響應(yīng)能力。但是...

From [MySQLdiscussion group] 2017-04-17 11:15:30 0  0  815

Scheduled event to copy data from one table to another in MySQL returns empty results

Running on phpMyAdmin local server: I have two tables: user (with data) and user_t (empty). They have the same...

From [MySQLdiscussion group] 2023-09-09 09:47:01 0  1  814

springboot application cannot establish connection with sql database running on docker

I have a project running in localhost, using intellij as a Springboot instance, using Xampp's SQL without any ...

From [MySQLdiscussion group] 2023-08-29 09:43:41 0  1  814

Example of many-to-many relationship

I haven't found any examples of MYSQL many-to-many relationships either here or on Google. I would like to see...

From [MySQLdiscussion group] 2023-08-18 11:04:20 0  2  814

mysql - How to design a table for this hierarchical one-to-many model with unbalanced hierarchies?

Recently I encountered a very tangled business model: I want to design a question bank for a teacher training ...

From [MySQLdiscussion group] 2017-05-18 10:48:38 0  4  814

mysql - 含有單個(gè)內(nèi)容不固定大字段的表如何設(shè)計(jì)？

現(xiàn)在需要設(shè)計(jì)實(shí)現(xiàn)記錄以下信息的數(shù)據(jù)庫(kù)表結(jié)構(gòu)。目前使用的是MySQL數(shù)據(jù)庫(kù)。存儲(chǔ)信息如下表所示: 字段 字節(jié)數(shù) 內(nèi)容 ID 16 記錄的唯一ID(一經(jīng)確定，不再修改) Name <256 該條記錄的名稱(一經(jīng)...

From [MySQLdiscussion group] 2017-04-17 15:20:37 0  3  814

使用sqoop從mysql導(dǎo)數(shù)據(jù)到hive一定要用jdbc嗎？

使用sqoop從mysql導(dǎo)數(shù)據(jù)到hive一定要用jdbc嗎？

From [MySQLdiscussion group] 2017-04-17 14:50:38 0  0  814

How to export partial rows of a MySQL table from WHERE clause?

How to export certain rows of MySQL table using where clause from PHP script? I have a MySQLsay test and I wan...

From [MySQLdiscussion group] 2023-10-21 11:41:17 0  2  813

How to return response from async call?

How to return response/result from function foo which makes async request? I've tried returning a value from t...

From [MySQLdiscussion group] 2023-10-08 20:41:15 0  2  813

MySQL query using group by clause returns more rows than without group by clause

Without the groupby clause, only 1 record is returned; among them, the required number of records is returned ...

From [MySQLdiscussion group] 2023-09-06 23:29:47 0  1  813

React Node.js MySQL Uncaught ReferenceError: process is undefined

I'm trying to implement a search page in my website. The user should be able to enter a keyword and the websit...

From [MySQLdiscussion group] 2023-08-29 22:19:27 0  1  813

mysql cache issue

1. The database mysql, the persistence layer uses mybatis2. Now I have configured two data sources A and B, bu...

From [MySQLdiscussion group] 2017-05-24 11:34:40 0  1  813