亚洲国产日韩欧美一区二区三区,精品亚洲国产成人av在线,国产99视频精品免视看7,99国产精品久久久久久久成人热,欧美日韩亚洲国产综合乱

golang - gorm無法連接mysql？賬號密碼都對了

( www.sf.gg ) 是中國領(lǐng)先的開發(fā)者技術(shù)社區(qū)。 我們希望為編程愛好者提供一個純粹、高質(zhì)的技術(shù)交流的平臺， 與開發(fā)者一起學(xué)習(xí)、交流與成長，創(chuàng)造屬于開發(fā)者的時代！

From [MySQLdiscussion group] 2017-04-17 16:34:00 0  2  833

MySQL int 類型不是最多只能到 4,294,967,295 么，怎么會有 int(11)？

MySQL int 類型不是最多只能到 4,294,967,295 么，怎么新建表的時候，默認(rèn)不寫 int 后面的數(shù)字（即不這樣寫int(5)），建好表之后會是 int(11)

From [MySQLdiscussion group] 2017-04-17 11:17:05 0  6  833

My WPF application won't start on another PC, but the application without MySql does, what could be the problem?

This is my first time using a database. I've created an application using XAMPP via mySqllocalhost that contai...

From [MySQLdiscussion group] 2024-04-03 11:16:00 0  1  832

mysql - Since innodb has gap locks at the RR isolation level, why do two transactions still produce deadlocks due to different locking orders? ?

Deadlock is caused by multiple transactions competing for the same resource. Whether it is two SQL statements ...

From [MySQLdiscussion group] 2017-05-18 10:54:38 0  1  832

Database - Questions about installing MySQL?

(www.sf.gg) is China's leading developer technology community. We hope to provide a pure, high-quality technic...

From [MySQLdiscussion group] 2017-05-18 10:50:02 0  6  832

mysql - 大表和小表關(guān)聯(lián), 在哪個表上建立關(guān)聯(lián)字段, 使查詢效率更高

有兩張表, 如下: file - 文件表, 用于存儲上傳的文件file_version - 文件版本表, 用于實現(xiàn)上傳文件多版本, 數(shù)據(jù)量肯定大于 file 表 當(dāng)這兩張表關(guān)聯(lián)的時候, 如下那種方式好 方式1: 在fil...

From [MySQLdiscussion group] 2017-04-17 16:39:48 0  3  832

數(shù)據(jù)庫 - Starting MySQL. ERROR!

Starting MySQL. ERROR! The server quit without updating PID file (/usr/local/mysql/data/*.pid)在Linux中啟動Mysql時報...

From [MySQLdiscussion group] 2017-04-17 16:28:15 0  2  831

windows系統(tǒng)下mysql工具連接為什么會出現(xiàn)Error 1045(28000) Access Denied for user 'root'@'localhost'

windowns 安裝mysql-5.5.22-win32后， Navicat工具連接數(shù)據(jù)庫提示ERROR 1045 (28000): Access denied for user 'root'@'localhost' ...

From [MySQLdiscussion group] 2017-04-17 11:32:47 0  3  831

mysql - Database design (scheme design), should NULL be avoided as much as possible?

I learned the actual phenomenon: NULL has unclear semantics and is not easy to optimize when querying. If it r...

From [MySQLdiscussion group] 2017-05-18 10:54:25 0  2  830

Multiple meta_values ??use the same meta_key to query posts' custom fields

Scenario: A post has multiple entries with values ??for the same key, for example a single post will have mult...

From [MySQLdiscussion group] 2023-08-15 14:16:16 0  1  829

mysql update inner join錯誤

update a set a.city=b.city FROM(SELECT * FROM zhujiagewang WHERE collecttime='2016-10-27' AND city IS NULL) a ...

From [MySQLdiscussion group] 2017-04-17 15:47:41 0  1  829

mysql - AttributeError: 'module' object has no attribute 'MatchType'

{代碼...} 線上有時候會報錯，暫時找不到原因，有遇到過的么？ {代碼...} 代碼 {代碼...} goto {代碼...} then {代碼...} sqlalchemy 版本：SQLAlchemy-1.0.8-p...

From [MySQLdiscussion group] 2017-04-17 15:22:14 0  1  829

vagrant - 使用NFS文件夾作為mysql datadir無法啟動mysql的問題？

我使用的主機是WIN10系統(tǒng)，搭建了一個以vagrant來控制的虛擬機作為開發(fā)環(huán)境。我的虛擬機是vbox，系統(tǒng)是centos7。所有需要依賴的vagrant插件全部都安裝好了，包括vboxadditional vagra...

From [MySQLdiscussion group] 2017-04-17 15:01:36 0  1  829

centos7 安裝的mysql。/var/run/mysqld 每次重啟后都需要手動去創(chuàng)建

每次重啟機器后，/var/run/mysqld/文件夾 以及 mysqld.pid 都需要手動去創(chuàng)建，否則無法啟動mysql。這個是什么問題造成的？

From [MySQLdiscussion group] 2016-11-17 14:48:46 0  1  829

php - laravel有沒有分表的方案

系統(tǒng)是用laravel搭建的，數(shù)據(jù)庫是阿里云的rds。日訪問量數(shù)百萬PV。目前遇到了單表數(shù)據(jù)量過大（1000W了）及查詢經(jīng)常把cpu跑滿。所以打算分表試試。laravel有沒有現(xiàn)成的庫。或者說php有什么解決方案，少改代...

From [MySQLdiscussion group] 2017-04-17 16:48:50 0  1  828