mysql

云数据库MySQL版快速上手教程

六眼飞鱼酱① 提交于 2021-02-07 04:50:50
MySQL数据库免费教学课程: MySQL数据库入门学习 (本课程通过最流行的开源数据库MySQL带你了解数据库的世界。让小白也能够熟练掌握常用的数据库使用技巧,理解数据库的存储结构,适合数据库入门学习者、前端学习者学习!) MySQL是一种开放源代码的关系型数据库管理系统(RDBMS),MySQL数据库系统使用最常用的数据库管理语言--结构化查询语言(SQL)进行数据库管理。 MySQL是开放源代码的,因此任何人都可以在General Public License的许可下下载并根据个性化的需要对其进行修改。 MySQL因为其速度、可靠性和适应性而备受关注。大多数人都认为在不需要事务化处理的情况下,MySQL是管理内容最好的选择。 由于MySQL是开放源代码的,因此任何人都可以在General Public License的许可下下载并根据个性化的需要对其进行修改。MySQL因为其速度、可靠性和适应性而备受关注。大多数人都认为在不需要事务化处理的情况下,MySQL是管理内容最好的选择。 MySQL这个名字,起源不是很明确。一个比较有影响的说法是,基本指南和大量的库和工具带有前缀“my”已经有10年以上,而且不管怎样,MySQL AB创始人之一的Monty Widenius的女儿也叫My。这两个到底是哪一个给出了MySQL这个名字至今依然是个迷,包括开发者在内也不知道。

mysql installer fails to recognize python 3.4

落花浮王杯 提交于 2021-02-07 04:45:08
问题 I'm trying to istall mysql server on a windows 7 machine - that has python 3.4.3 installed. However, when trying to install the python connectors for 3.4, the installer fails to recognize the python installation, saying python 3.4 is not installed . Has anyone solved this issue before? I'ts driving me nuts... 回答1: Just to add to the murkiness, I had the same error with current version of MySql install when attempting with python 3.5 installed (which is the latest python download). Long story

How to optimise this MySQL query? Millions of Rows

筅森魡賤 提交于 2021-02-07 04:42:46
问题 I have the following query: SELECT analytics.source AS referrer, COUNT(analytics.id) AS frequency, SUM(IF(transactions.status = 'COMPLETED', 1, 0)) AS sales FROM analytics LEFT JOIN transactions ON analytics.id = transactions.analytics WHERE analytics.user_id = 52094 GROUP BY analytics.source ORDER BY frequency DESC LIMIT 10 The analytics table has 60M rows and the transactions table has 3M rows. When I run an EXPLAIN on this query, I get: +------+--------------+-----------------+--------+---

insert multiple rows into database via form

与世无争的帅哥 提交于 2021-02-07 04:38:51
问题 In php I can add multiple rows into my database using the below $sql = 'INSERT INTO 'tablename' ('column1', 'column2') VALUES ('data1', 'data2'), ('data3', 'data4'), ('data5', 'data6'), ('data7', 'data8'); '; But I can't work out how to create a form that will allow me to add multiple rows into the database. In the past when I just want to add in one row at a time I have been able to do something like this in my form. <input type="text" name="name" value=""> and the below in my php $_POST[

mysql5.7配置文件

梦想的初衷 提交于 2021-02-07 04:20:24
[mysqld] pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock datadir = /var/lib/mysql #log-error = /var/log/mysql/error.log # By default we only accept connections from localhost #bind-address = 127.0.0.1 # Disabling symbolic-links is recommended to prevent assorted security risks #支持符号链接,就是可以通过软连接的方式,管理其他目录的数据库,最好不要开启,当一个磁盘或分区空间不够时,可以开启该参数将数据存储到其他的磁盘或分区。 #http://blog.csdn.net/moxiaomomo/article/details/17092871 symbolic-links=0 ########basic settings######## server-id = 11 port = 3306 user = mysql #设置autocommit=0,则用户将一直处于某个事务中,直到执行一条commit提交或rollback语句才会结束当前事务重新开始一个新的事务

How to set datasource for MySQL database in Microsoft SQL Report Builder 3.0?

99封情书 提交于 2021-02-07 04:18:52
问题 I am using Microsoft SQL Server Report Builder 3.0. And I have remote Linux Server(with certain IP) that have MySQL database. I want connect this MySQL database from Report Builder (in my PC), So that I can create some reports about it. How can i do that? Please help and Thanks. 回答1: First, you need to download and install (32-bit or 64-bit) appropriate MySQL connector. MySQL ODBC connector After installation, you need to create ODBC Data Source Name (DSN) on this way: Open Control Panel ->

How to set datasource for MySQL database in Microsoft SQL Report Builder 3.0?

谁说胖子不能爱 提交于 2021-02-07 04:18:48
问题 I am using Microsoft SQL Server Report Builder 3.0. And I have remote Linux Server(with certain IP) that have MySQL database. I want connect this MySQL database from Report Builder (in my PC), So that I can create some reports about it. How can i do that? Please help and Thanks. 回答1: First, you need to download and install (32-bit or 64-bit) appropriate MySQL connector. MySQL ODBC connector After installation, you need to create ODBC Data Source Name (DSN) on this way: Open Control Panel ->

Searching Multiple Tables (SQL)

柔情痞子 提交于 2021-02-07 04:18:06
问题 I need to be able to have an SQL query that searches my database using a simple search. Here is what my tables look like right now: Table artists -------------- id name Table albums ------------- id artistID name Table songs ------------ id albumID name How would I go about doing this? Here are some SQL queries that I have tried, but my issue is that it is returning a lot of data. For instance, if I search for an artist like Snoop Dogg, it is returning a row for each album and song that he

How to set datasource for MySQL database in Microsoft SQL Report Builder 3.0?

丶灬走出姿态 提交于 2021-02-07 04:17:59
问题 I am using Microsoft SQL Server Report Builder 3.0. And I have remote Linux Server(with certain IP) that have MySQL database. I want connect this MySQL database from Report Builder (in my PC), So that I can create some reports about it. How can i do that? Please help and Thanks. 回答1: First, you need to download and install (32-bit or 64-bit) appropriate MySQL connector. MySQL ODBC connector After installation, you need to create ODBC Data Source Name (DSN) on this way: Open Control Panel ->

Searching Multiple Tables (SQL)

泄露秘密 提交于 2021-02-07 04:16:24
问题 I need to be able to have an SQL query that searches my database using a simple search. Here is what my tables look like right now: Table artists -------------- id name Table albums ------------- id artistID name Table songs ------------ id albumID name How would I go about doing this? Here are some SQL queries that I have tried, but my issue is that it is returning a lot of data. For instance, if I search for an artist like Snoop Dogg, it is returning a row for each album and song that he