about mysql

FAQs about MySQL synchronization (with caution) and FAQs about mysql I just registered a blog park a few days ago. I want to write some technical tutorials. Today I will share with you a faq about MySQL synchronization. Q: If the master server is

After MySQL is used to a certain extent, it is inevitable to read the MySQL source code. Here, we recommend Yang Wanfu's series of articles on "thinking about MySQL kernel", which are easy to understand and helpful to those who are preparing to read

Let's talk about MySQL deadlocks and logs in detail, and talk about mysql logs in detail. Recently, several successive data exceptions occurred in MySQL in the early morning. Due to the typical data warehouse-type application in business scenarios,

Talking about MySQL temporary table and derived table, talking about mysql Derivation About derived tables When the primary query contains a derived table, or when the select statement contains the union clause, or when the select statement contains

Talking about Mysql specified ordered query, talking about mysql ordered Query Recently, I made a big screen presentation project, similar to displaying shift information at airports and railway stations. However, the presentation content is much

Chat about MySQL InnoDB storage engine (i)Chat about MySQL's InnoDB storage Engine (ii)Chat about MySQL InnoDB storage engine (end)In this paper, we discuss the processing method of Phantom reading in InnoDB engine and the detection of deadlock and

ToolsMysqlMysqldumpapplication Example Export Export a full library backup to a local directorymysqldump-u$user-p$passwd-h127.0.0.1-p3306--routines--Default-character-set=utf8--lock-all-tables-- Add-drop-database-a > Db.all.sql Export the

Regarding the interaction between mysql and hadoop data, and the hadoop folder design, concerning the interaction between mysql and hadoop data, and hadoop folder design, mysql is currently distinguished by region and business district, assuming

The following articles briefly describe some basic knowledge about MySQL databases. With the wide application of MySQL databases, the related knowledge is also paid more and more attention, the following articles are intended for beginners of MySQL.

When talking about MySQL subqueries and their optimization, DBAs or developers who have used oracle or other relational databases have such experience. in subqueries, they all think that the database has been optimized, it is good to choose to drive

Let's talk about the MySQL character set. First of all, this article is purely my personal experience and is applicable to my common environments and projects. Personally, we recommend that you use utf8 (HTMLThe page corresponds to UTF-8), so that

About mysql batch replacement problem table name: sdb_daq_comment field is: contentcontent contains some & lt; a & gt; tags. How do I write SQL statements that replace mysql & lt; a & gt; tags in batches ?, Updatesdb_daq_commentsetcontent = replace (

Ask a question about mysql traversing to json. I use PHP to pass a value to JqueryAJAX. $. parseJSON parsing I have learned how to query a record. if you want to upload multiple records. there is a problem. // A record // $ row = mysql_fetch_array ($

About Mysql triggers !! When I create A trigger in the insertA table, I also add some values of related fields in table A to Table B. The IDs in Table A are automatically increased and primary keys, this id value should be placed in the int field

Transferred from: http://www.blogjava.net/persister/archive/2008/10/27/236813.htmlWith the help of explain, you know when to add an index to the table to use the index to find records and make the select run faster.If some problems arise due to

People: I: Not getting Started Linux rookieBrother Fat: TeacherStory:Brother from the script since the advocating through scripting to learn the deployment of various services, the pros and cons of the party through the script Automation deployment

Source: http://bbs.mysql.cn/viewthread.php? Tid = 72 & extra = Page % 3d1% 26 filter % 3 ddigest About Mysql Data export and version Conversion Recently, many people are asking about MySQL. The import and export problems, so I simply summarized

Important questions about mysql Indexes This article describes several important questions about mysql indexes. We will share this with you for your reference. The details are as follows: 1. What is indexing? The index is used to quickly find rows

Let's talk about the MySQL character set. First of all, this article is purely my personal experience and is applicable to my common environments and projects. Personally, we recommend that you use utf8 (HTMLThe page corresponds to UTF-8), so that

I would like to ask a question about MYSQL. if the database stores a short string: ABBCCD, then the words in my hand are long strings, such as & nbsp; ABCD, how should I write SQL statements, which of the following keywords can match the string? Do