MySQL

Start the navicat software and use "Link" to connect to the mysql database. Ensure that the firewall can pass through before use. Navicat For MySQL: Http://www.jb51.net/database/2223.htmlThen, enter a "connection name". Enter "host name/ip". Enter

DDL-Data Definition Language (Create, Alter, Drop, DECLARE)DML-data manipulation language (Select, Delete, Update, Insert)DCL-Data Control Language (GRANT, REVOKE, COMMIT, ROLLBACK)First, we will briefly introduce the basic statements:1. Description:

Method 1: 1. Table StructureUse MySQL to generate the create script. Find the script to be exported and modify the Column Structure of the table created in the MySQL database according to the MySQL syntax.2. Export table dataUse bcp on MSSQL to

So:1. Create a temporary database in the master database and copy the table files to be imported.2. ExecuteCreate database tmpdb;Create table tmptable;Cp mysql_date_file master_data_file // shell command copies the data table file to the master data_

The table lists various numeric types, their permitted ranges, and occupied memory space. Type Size Range (Signed) Range (unsigned) Purpose TINYINT 1 byte (-128,127) (0,255) Small integer SMALLINT

SQLCopy codeThe Code is as follows:Insert into 'table' ('id', 'AA', 'bb ', 'cc') SELECT 'id', 'A', 'bb ', 'cc' FROM 'table' (WHERE .....)Tips:Copy codeThe Code is as follows:/*** When copying a new record, you may need to update the id or part of

1. Start and exit 1. Go to MySQL: Start MySQL Command Line Client (MySQL DOS Interface) and enter the password for installation. The prompt is: mysql>2. exit MySQL: quit or exitIi. Database Operations1. Create a databaseCommand: create database For

1. Backup database (single table backup) bk_table.bat Copy codeThe Code is as follows:Mysqldump-h127.0.0.1-P3306-uroot-proot -- default-character-set = gbk-t database1 table1> table1. SQLMysqldump-h127.0.0.1-P3306-uroot-proot --

I. Problems To generate two types of data:Class A: 01 02 03 of two digits... 09 10 11... 19 20 21... 98 99Another Class B: The third-digit 100 101 102... 110 111 112... 998 999Ii. Solution 1. Create a tableCopy codeThe Code is as follows:Create

1. Export the table mysqldump-no-data-uroot-p database> struct. SQL from 4.02. Export data mysqldump-no-create-info = true-extended-insert = false-u root-p database> data. SQL3. Use vi to edit struct. SQL and use the last-line command.: % S/) TYPE =

Return num -- can only be an integerCreate procedure ch@ Ch VARCHAR (55) OUTPUT,@ Ping varchar (45) OUTPUTASSELECT @ ch = 'ffgfg', @ PING = 'chenssksksksk'-- CallDECLARE @ chs VARCHAR (55), @ pins VARCHAR (45)EXECUTE ch @ chs OUTPUT, @ pins

The test procedure is as follows:Create table salesAs select * from sh. sales;Create table MERsAsSelect * from sh. customers;Create unique index CUST_ID_un on MERs (CUST_ID );Create:Bitmap Join IndexesCreate bitmap index sales_cust_gender_bjixOn

Because of its small size and efficient operations, MySQL is increasingly used in database applications. when I was developing a P2P application, I used MySQL to store P2P nodes. Because P2P applications have tens of thousands knots, and nodes

I. server environment 1. Windows Enterprise Edition sp2 2. mysql 5.1.55 3. php 5.2.17 4. IIS 6.0 Ii. Cracking Process 1. Stop the mysql Service (run the command line in cmd as an administrator) by running the following command: Net stop mysql 2.

Three Tips for improving MySQL query efficiencyBecause of its small size and efficient operations, MySQL is increasingly used in database applications. when I was developing a P2P application, I used MySQL to store P2P nodes. Because P2P

Mysql> SELECT something FROM tbl_nameWHERE TO_DAYS (NOW ()-TO_DAYS (date_col) DAYOFWEEK (date)Returns the week index of date (1 = Sunday, 2 = Monday,... 7 = Saturday ). The index value complies with ODBC standards.Mysql> select dayofweek ('2017-02-03

Text/figure security angel [BST] Preface My "SQL Injection with MySQL" (the special topic of "" in July) has provided a comprehensive introduction to MySQL Injection, but there is a function that harms a lot, I didn't mention it in this article,

Mysql common data export commands:1. mysql exports the entire databaseMysqldump-hhostname-uusername-ppassword databasename> backupfile. SQLMysqldump-hlocalhost-uroot hqgr> hqgr. SQL (if the root user does not use the password, you can leave-p. Of

Data Tables have been created. If we have inserted a lot of data, we can search and display the information in the data table in our favorite way, for example: the content in the entire data table can be displayed as follows:Select * from

In the debian environment, the problem that mysql cannot insert or display Chinese characters is completely solved. How to insert Chinese characters into Mysql in Linux Mysql-uroot-p press enter to enter the password Enter mysql to view the status