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Compile and install Ubuntu-12.04.2 on MySQL-5.6.10 [Installation notes] Ubuntu BitsCN.com Compile and install the Ubuntu-12.04.2 on the MySQL-5.6.10 [Installation notes] The following installation involves several issues that need to be explained

C ++ connects to mysql Chinese garbled bitsCN.com Settings about mysql encoding: Http://www.bitsCN.com/database/201108/101151.html Problem description: Environment: linux Mysql encoding settings: Enter Chinese characters on the terminal

MySQL obtains the start_dateend_date bitsCN.com of the current week, month, and quarter. MySQL obtains start_date/end_date of the current week, month, and quarter. The first day of the current week: Select date_sub (curdate (), interval weekday

[Fun with MySQLReplication] copying topology bitsCN.com Simple and simple is true. those high-end foreign copy topologies are purely self-abuse.There are about four principles for implementing replication: ① A master database can have multiple

Mysql stored procedure basics bitsCN.com Mysql Stored Procedure Basics [SQL] #1. View all stored procedure names in the database # -- this statement is used to remove a stored procedure. You cannot delete another stored procedure in one stored

Mysql stored procedure-Basic Knowledge: bitsCN.com Mysql stored procedure-basic knowledge Stored procedures, such as the same programming language, also contain data types, process control, input and output, and their own function libraries. ----

MySQL learning footprint Record 04 -- data filtering -- WHERE bitsCN.com MySQL learning footprint Record 04 -- data filtering -- WHERE 1. use the WHERE clause eg: mysql> SELECT prod_name,prod_price FROM products WHERE prod_price=2.50;+----------

Mysql join optimization bitsCN.com Mysql join optimization 1. multi-table connection type 1. Cartesian products (cross join) can be considered as cross join in MySQL, or CROSS is omitted, or ',' such: SELECT * FROM table1 cross join

Don't stick to the details-mysql field type details bitsCN.com Don't stick to the details-mysql field type details Mysql field type intvarchartext Maybe you don't care at ordinary times. when designing a database, you can set the number to an int (

Yesterday, I saw a new student in the group still asking questions about MySQL startup failure. so I summarized several common cases, so I had the right to popularize the post and the old bird flew over. Problem 1: The Directory and file permission

Modified a line of unnoticeable code in PostgreSQL to (ANY (ARRAY [...]) change to ANY (VALUES (...))), the result query time changes from 20 s to 0.2 s. At first, we learned to use EXPLANANALYZE to optimize the code. Later on, the Postgres

In MySQL, the SELECT statement containing GROUPBY displays bitsCN.com, where COUNT () is 0. The SELECT statement containing group by in MySQL displays the result of 0 in COUNT (). Mysql> select * from t1; + ------- + ------ + | level | name |

Mysql-libs and MySQL-server conflict resolution bitsCN.com Mysql-libs and MySQL-server conflict resolution Install php-mysql Yum install php-mysql Appears From install of mysql-libs-5.1.69-1.el6_4.x86_64 conflicts with file from package

MySQL integer: TINYINT, SMALLINT, MEDIUMINT, INT, BIGINT range: bitsCN.com MySQL integer: TINYINT, SMALLINT, MEDIUMINT, INT, BIGINT range TINYINT: the signed range is-128 to 127, and the unsigned range is 0 to the power of 8. SMALLINT: the

How to modify the configuration file (my. ini) of MySQL5.6 in Windows: bitsCN.com How to modify the configuration file (my. ini) of MySQL 5.6 in Windows This is also a small experience. As required by the experiment, I need to modify the MySQL

Mysql adds multiple foreign keys to the table and adds foreign key cascade constraints to Mysql foreign keys BitsCN.com Mysql adds multiple foreign keys/adds foreign keys/cascading constraints to the table 1. create table 'xh' ('id' int (100)

MYSQL deadlock-related searches for bitsCN.com MYSQL deadlock search If a deadlock occurs, how can this problem be solved? Find the original lock ID and KILL the thread that has been held all the time. but how can we find the thread ID that causes

[MySQL] using mysqldump for text backup mysqldump BitsCN.com [MySQL] using mysqldump for text backup When using mysqldump to back up MySQL, the backup file is a text file in SQL format, which consists of a series of create table and insert

[MySQL function] MYSQLIFNULL and IF functions use bitsCN.com [MySQL function] Use of mysql ifnull and IF functions The usage of the mysql ifnull function is described in detail below for your reference. if you have encountered similar problems in

ERROR126 (HY000): Incorrectkeyfilefortable bitsCN. comauthor: skate Time: 2012/06/25 ERROR 126 (HY000): Incorrect key file for table '/tmp/# SQL _1d87_0.myi'; try to repair it Case: Mysql> insert into t1 select * from t1; ^ [[AQuery OK, 24576