MySQL

The solution for restoring the large backup mysql file failed. Today, when maintaining the company's CRM, a large mysql database was restored and the recovery failed. use the following method (navicat is used for mysql management )., after the

MySQL database CRUD statement quick start SQL statement SQL statement, a language database used to operate the database, simply understood as a file on the hard disk, SQL statements that can store data can be classified into two types of databases:

In Mysql, the field is converted to Chinese pinyin, and the first letter of the field is used to share the Select t. id, t. ness_name, ELT (INTERVAL (CONV (HEX (left (CONVERT (t. ness_name USING gbk), 1), 16, 10), hour, hour, 0xB2C1, hour, hour, 0xB7

The mysql table lock statement first looks at the table structure, engine innodb www.2cto.com + ---- + ---------- + ------ + | id | name | seat | + ---- + ---------- + ------ + | 1 | administrator | 98 | 2 | maintenance personnel | 98 | 3 | Director

Mysql Stored procedure write paging Program/* Paging Program */delimiter // drop procedure if exists sp_page; create procedure sp_page (p_table_name varchar (1024), p_fields varchar (1024), p_page_size int, p_curr_page int, p_order_string varchar (25

The length of int bigint smallint and tinyint in mysql int www.2cto.com int from-2 ^ 31 (-2,147,483,648) to 2 ^ 31-1 (2,147,483,647) integer data (all numbers ), the storage size is 4 bytes, And the SQL-92 of the int Is integer. If the unsigned

MySQL statistical function record-numeric functions can use common arithmetic operators. Note that for-, +, and *, if both parameters are positive numbers, the accuracy of the calculation result is BIGINT (64 bits). If one of the parameters is an

The creation and use of MySQL stored procedures 1. CREATE a stored PROCEDURE: www.2cto.com SQL code CREATE PROCEDURE proc_name (out s int) -- create a stored procedure proc_name: The out parameter in the stored procedure name parameter list

When mysql is compiled and installed in centos, the following error is reported: www.2cto.com Java code [root @ vps870 mysql-5.5.28] # cmake-DCMAKE_INSTALL_PREFIX =/usr/local/mysql \>-DMYSQL_UNIX_ADDR =/tmp/mysql. sock \>-DDEFAULT_CHARSET = gbk

In mysql databases, the delete and truncate statements and the truncate table statements can be used to DELETE data. However, they are different, the following describes two common methods for empty mysqll table content: delete and truncate. The

The use of the initial execution file during mysql startup can be specified in the configuration file for the SQL file that is initially executed after mysql is started. The syntax is as follows: [mysqld] or [server: www.2cto.com init-file = D :\

The MySql garbled problem solves a series of problems caused by the garbled code and cannot be avoided during the real-recorded development process. Garbled characters are the cause of character sets. They generally do not have much to do with the

Mysql has a problem that Aborted_connects is always greater than 0. In my database, I check the parameter Aborted_connects every day, which is greater than 0, sometimes dozens or even hundreds, in fact, I restart the mysql database once a day. If I

MySQL cursor loop example if the in statement is used, it feels very slow and there is no result after running for a long time. You can grasp the progress by deleting the stored procedure. This is the sample code of MySQL cursor loop, avoid frequent

Mysql page garbled problem, you can change the encoding format of the mysql database to the same, UTF8 or gbk1. database encoding www.2cto.com 2. table encoding 3. my. ini modifies the mysql character encoding to UTF8 Mysql database, which is an

I encountered a problem when I was writing the mysql stored procedure today. What about mysql version? 5.1.40 I don't know if the higher version is correct. If the higher version does not exist, I skipped www.2cto. comsql is as follows: [SQL]

Mysql multi-Table update SQL statement summary mysql multi-Table update has several different writing methods. Www.2cto.com suppose we have two tables. One Table stores Product information for the Product table, with the Product Price column Price.

MYSQL getting started 6: MYSQL operator links: MYSQL getting started 1: basic operations http://www.bkjia.com/database/201212/173868.htmlMYSQL Entry 2: Search Using Regular Expressions http://www.bkjia.com/database/201212/173869.htmlMYSQL Entry 3:

Share a script that automatically jumps mysql slave Database Error 1062 suddenly loses power from the database, which may cause information in the log not flushed to the hard disk, after the slave database is started, the master and slave databases

A small example of MySQL stored procedure with parameters the Stored Procedure P_GET_CLASS_NAME is based on the input class number to determine the class name Stored Procedure P_INSERT_STUDENT is to receive input student information, and finally