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Can mySQL in wamp be used alone?

I used to install the integrated environment wamp when I was developing with php. Now I am developing with jsp...

From [MySQLdiscussion group] 2017-06-06 09:52:15 0  3  988

Does mysql database report error 10061?

Do I need to reinstall mysql every time? Looking for a better way!

From [MySQLdiscussion group] 2017-11-20 20:25:03 0  1  986

mysql - 查詢過去某個時間sql運行情況

通過zabbix監(jiān)控到數(shù)據(jù)庫服務(wù)器過去某個時間cpu使用率很高，mysql中是否有某些視圖或者awr報告之類可以去追蹤當(dāng)時數(shù)據(jù)庫的運行情況。暫時未對數(shù)據(jù)庫設(shè)置監(jiān)控腳本。如果不行，有沒有什么比較好的監(jiān)控方法

From [MySQLdiscussion group] 2017-04-17 16:42:27 0  1  986

How to get the first name from customer_name column

selectsubstring(custommer_name,1,instr(custmer_name,''))asfirst_namefromsales.customers; this solution gave me...

From [MySQLdiscussion group] 2024-04-06 17:43:30 0  2  985

mysql - How to do scheduled notification and release on time in PHP?

Requirements/scenarios: For example, set an article to be published on 2018-5-22 13:51:16. Let me know in thre...

From [MySQLdiscussion group] 2017-05-24 11:33:02 0  9  985

SQL一個語句不會寫，求高手

A表是物品表，有物品編號字段。（比如有記錄001和002）B表是操作日志表，有物品編號字段跟A表對應(yīng)，有操作時間字段和操作人字段（比如001有3條記錄，第一個操作人是aaa，002有5條記錄，第一個操作人是bbb）我要把...

From [MySQLdiscussion group] 2017-03-01 09:44:40 0  2  984

Preventing SQL injection attacks in Java programs

I have to add a statement to my java program to update the database table: Stringinsert="INSERTINTOcustom...

From [MySQLdiscussion group] 2023-10-20 20:06:17 0  2  983

java - trigger to update two tables at the same time

Using mysql, book management, the problem involves two tables, books and render. Here comes the problem: I wan...

From [MySQLdiscussion group] 2017-06-28 09:23:33 0  2  983

Why does the order change after mysql uses group_concat?

Since the fields in the two tables contain a one-to-many relationship, the group_concat function was used to s...

From [MySQLdiscussion group] 2017-05-18 10:49:30 0  1  983

Subquery - how mysql merges multiple rows of data into multiple columns of one row

The picture shows the data I filtered out. The statement is select time,wish_num,num from wish_num where time ...

From [MySQLdiscussion group] 2017-05-24 11:33:01 0  1  981

安裝軟件 - mysql5.7.11安裝出現(xiàn)錯誤，請看抓屏和log文件。

安裝環(huán)境：WINXP SP3Mysql版本：mysql5.7.11下載地址：http://dev.mysql.com/downloads/mysql/（見圖一） 安裝方式一：mysql-installer-communi...

From [MySQLdiscussion group] 2017-04-17 13:58:45 0  1  981

關(guān)于MongoDB使用場景的疑問？

目前網(wǎng)站的數(shù)據(jù)庫是MYSQL，里面存儲了很多歌曲信息記錄。我在想如果把歌曲查詢部分做成從MongoDB里查詢，速度是不是會快一些？以后對歌曲信息的增刪寫的時候，同時要跟MongoDB同步一下，是這樣吧？沒有NOSQL的經(jīng)...

From [MySQLdiscussion group] 2017-03-11 09:18:51 0  2  980

node.js - nodejs單進程產(chǎn)生的數(shù)據(jù)庫連接多線程并發(fā)問題探討

舉例，假設(shè)有100個請求node服務(wù)器，每個請求會執(zhí)行一次查詢，修改數(shù)據(jù)庫操作。假設(shè)10個請求按順序被node接收處理 等待各自判定庫存查詢數(shù)據(jù)庫io操作，但是庫存只有5個，問題來了，這時候10個查詢都判定庫存還有，.....

From [MySQLdiscussion group] 2017-04-17 15:50:35 0  4  979

mysql5.7 json數(shù)據(jù)類型存儲 導(dǎo)致數(shù)據(jù)順序發(fā)生變化

json字符串?dāng)?shù)據(jù)原先是使用text進行存儲的，字典格式會保持原有的順序。 但是該為json后，變失去了順序性。 如何在json格式里保持？

From [MySQLdiscussion group] 2017-04-17 16:15:38 0  1  977

How to get multiple data with the same user ID from a table in Nest.js? Assuming I have a users table, how do I get the data that matches the user ID?

How to get multiple data with same user id from table in Nestjs? Let's say I have a users table. How to get da...

From [MySQLdiscussion group] 2023-11-16 20:41:42 0  2  976