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navicat-fot-mysql - navicat連接mysql的時(shí)候，在輸入數(shù)據(jù)庫(kù)域后面的點(diǎn)之后，經(jīng)常會(huì)未響應(yīng)，這是數(shù)據(jù)庫(kù)的問(wèn)題，還是工具哪里的設(shè)置問(wèn)題？

如上圖，卡著，有時(shí)會(huì)好，有時(shí)就一直卡著，請(qǐng)教一下有沒(méi)有解決方法

From [MySQLdiscussion group] 2017-04-17 13:52:56 0  3  763

萬(wàn)網(wǎng)虛擬主機(jī)mysql保存微信昵稱亂碼

微信用戶昵稱支持emoji，emoji符號(hào)是四字節(jié)的，而萬(wàn)網(wǎng)虛擬主機(jī)的mysql版本是5.1.48版本，支持的最長(zhǎng)字符是4字符的。 所以獲取用戶昵稱后保存到數(shù)據(jù)庫(kù)會(huì)出現(xiàn)一串問(wèn)號(hào)： google了一堆文章，說(shuō)是mysql到...

From [MySQLdiscussion group] 2017-04-17 14:49:25 0  2  762

Change {oj } SQL query to normal SQL syntax

Can I ask you to help me convert this {oj}SQL syntax to normal connection syntax? SELECT...FROM{oj(((((((((&qu...

From [MySQLdiscussion group] 2023-09-07 00:20:45 0  1  761

Best Way: Retrieve, Encrypt, and Update Millions of Records in MySQL Using Java 8

We have a requirement where we need to read approximately 10 million records from a MySQL database, encrypt th...

From [MySQLdiscussion group] 2023-08-27 00:17:18 0  1  761

mysql索引 - mysql的普通索引使用問(wèn)題

mysql一般建表都會(huì)設(shè)置主鍵索引 然后對(duì)唯一性的字段設(shè)置唯一索引 但普通索引從來(lái)沒(méi)用過(guò) 普通索引是在非唯一性 需要索引的地方用嗎 有沒(méi)有舉例說(shuō)明 是要對(duì)大多數(shù)的字段 都進(jìn)行普通索引嗎？

From [MySQLdiscussion group] 2017-04-17 15:56:58 0  3  761

centos7 - 請(qǐng)教：CentOS 下 Mysql 無(wú)法啟動(dòng)， selinux 為disabled

錯(cuò)誤信息為： {代碼...} 請(qǐng)教下這究竟是什么原因?qū)е碌模?/a>

From [MySQLdiscussion group] 2017-04-17 15:36:27 0  3  761

MySQL 一個(gè)left join 查詢疑問(wèn)

c_mart_order_info 表執(zhí)行 {代碼...} c_order_pay 執(zhí)行 {代碼...} 兩個(gè)表 left join 后 {代碼...} 兩個(gè)表都有相同的 order_sn 用left join 查詢，為...

From [MySQLdiscussion group] 2017-04-17 13:53:44 0  2  761

MySQL分區(qū)索引

分區(qū)列和索引列不匹配如果定義的索引列和分區(qū)列不匹配，會(huì)導(dǎo)致查詢無(wú)法進(jìn)行分區(qū)過(guò)濾。假設(shè)在列a上定義了索引，而在列b上定義的分區(qū)。因?yàn)槊總€(gè)分區(qū)都有其獨(dú)立的索引，所以掃描列b上的索引就需要掃描每個(gè)分區(qū)內(nèi)對(duì)應(yīng)...

From [MySQLdiscussion group] 2017-04-17 13:29:30 0  1  761

How to batch insert inserted ids in mysql

After inserting multiple rows in mysql table using this query, I am trying to get insertidinsertintosometable(...

From [MySQLdiscussion group] 2024-03-26 14:08:28 0  1  760

Is there a way to automatically update the offset in the query when tijdtot is negative

I have a question. I have a query that calculates how many days until the next Grand Prix event in a list. The...

From [MySQLdiscussion group] 2023-09-12 22:58:55 0  1  760

The rewritten title is: How to match two attributes and get multiple results using SQL query?

Long story short, I'm working on an app that matches people who want to adopt a dog with available dogs in she...

From [MySQLdiscussion group] 2023-09-12 11:28:18 0  1  760

Mysql 關(guān)于 FOUND_ROWS() 和 ROW_COUNT() 函數(shù)

{代碼...} 可是我在mysql中進(jìn)行測(cè)試的時(shí)候，根本無(wú)法獲取正確的結(jié)果，在百度谷歌搜出來(lái)的都是各種抄襲，所以在此處請(qǐng)教大神，如何配置才能得到正確結(jié)果。

From [MySQLdiscussion group] 2017-04-17 16:13:41 0  1  760

遠(yuǎn)程連接阿里云上的Mysql，連接不上！

除了分配權(quán)限之外，還有其他要配置的么？

From [MySQLdiscussion group] 2017-04-17 15:06:47 0  1  760

node.js - node連接mysql 超時(shí)的問(wèn)題

如題，連接超時(shí)，我做了重連機(jī)制，但是貌似有時(shí)在mysql的query的回調(diào)函數(shù)里邊查詢結(jié)果是空，連接狀態(tài)是undefined，但是沒(méi)有進(jìn)入mysql的error時(shí)間回調(diào)里邊，不知是怎么回事，有人遇到過(guò)嗎？ 這個(gè)是重連的代...

From [MySQLdiscussion group] 2017-04-17 13:03:51 0  0  760

SQL NOT IN subquery causes performance degradation

I want to use a table to check the streets. Query is not optimal Query is taking too long Can anyone help me S...

From [MySQLdiscussion group] 2023-09-12 12:21:35 0  2  759