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Modify the same field in the database form

For example, upload/vod/20180721/upload/vod/20180720/upload/vod/20180719/... is changed to images/vod/20180721...

From [MySQLdiscussion group] 2018-07-21 13:20:18 0  2  1206

【緊急】【Mysql】為什么多次leftjoin后使用聚合函數(shù)count統(tǒng)計(jì)數(shù)據(jù)就不準(zhǔn)確了呢？？跪求大神指點(diǎn)！

先上sql {代碼...} 只有a和b進(jìn)行左外連接 查出來的數(shù)據(jù)是 如圖所示，這是可以看到venueId為4的venueCourseCount為10 然后我改一下sql {代碼...} 這時(shí) b表和c表又進(jìn)行一次左外連接...

From [MySQLdiscussion group] 2017-04-17 13:45:30 0  1  1205

mysql和redis效率問題？

<?php  $redis = new redis(); $redis->connect('127.0.0.1', 6379); for&nb...

From [MySQLdiscussion group] 2017-03-14 09:37:36 0  2  1203

mysql - How to implement multi-table association query?

{Code...} The above are three tables in the database, related through UserID. Table A is a user login informat...

From [MySQLdiscussion group] 2017-07-04 13:44:12 0  1  1203

Fatal error: Uncaught mysqli_sql_exception: Database 'bsmn' is unknown

I have imported the database into my php admin but the problem persists: Fatal error: Uncaught mysqli_sql_Exce...

From [MySQLdiscussion group] 2023-10-24 18:44:33 0  1  1202

Common methods for connecting to MYSQL database with PHP

After configuring a Xiaoniao cloud server and deploying a PHP environment, what are the common methods for con...

From [MySQLdiscussion group] 2021-09-07 13:56:33 0  3  1202

Rewrite the title as: Convert JSON array to rows in MySQL

Update: This is now possible in MySQL8 via the JSON_TABLE function: https://dev.mysql.com/doc/refman/8.0/en/js...

From [MySQLdiscussion group] 2023-08-27 18:03:29 0  2  1201

mysql本地系統(tǒng)的與網(wǎng)絡(luò)服務(wù)有什么區(qū)別？

【MySQL5.7版本】首先貼圖如下：當(dāng)?shù)顷憁ysql時(shí)使用的是net start mysql57,可以正常登陸登出。而使用net start mysql卻是可以的，提示如下： 當(dāng)我試圖手動(dòng)啟動(dòng)mysql服務(wù)（不是mys...

From [MySQLdiscussion group] 2017-04-17 13:25:29 0  1  1201

Why is my PHP link sql garbled?

The web page is also utf8 and the database is utf8. PHP is also set to utf8.

From [MySQLdiscussion group] 2020-05-19 11:41:40 0  2  1199

GROUP BY 出錯(cuò)

代碼為：SELECT goods_id , goods_name FROM tdb_goods GROUP BY goods_name;報(bào)錯(cuò)為：ERROR 1055 (42000): Expression #1 of S...

From [MySQLdiscussion group] 2016-12-21 17:45:47 0  2  1199

mysql - mybatis select statement problem

Message reminder continues. This message may be someone else's direct reply to your article. At this time, you...

From [MySQLdiscussion group] 2017-06-20 10:05:48 0  3  1196

如何給除了主鍵外的字段設(shè)置自增？

如何給除了主鍵外的字段設(shè)置自增？一個(gè)表有主鍵，是自增的，我想給表的另一個(gè)字段設(shè)置主鍵，設(shè)置成自增從10000開始自增，在網(wǎng)上找了好多資料都是設(shè)置主鍵的，沒有其他字段的，想問下如何寫？

From [MySQLdiscussion group] 2017-03-08 16:37:59 0  1  1195

How to solve the problem that Apache cannot start the program

From [MySQLdiscussion group] 2018-09-06 02:26:30 0  2  1195

How to upgrade the database in phpstudy? It is integrated with mysql5.5. How can I upgrade to 5.6 or 5.7? After reading many tutorials on the Internet, it is still 5.5 after installation.

How to upgrade the database in phpstudy? It is integrated with mysql5.5. How can I upgrade to 5.6 or 5.7? Afte...

From [MySQLdiscussion group] 2017-11-15 16:48:28 0  0  1195

Medoo linked list query questions

Query all the fields of the slide_item table. The specified fields of the slide table are written with * in al...

From [MySQLdiscussion group] 2019-07-30 15:00:12 0  0  1192