create database if not exists

Li Wu:Heng Learn to think together, honouring teachers save Thanksgiving. Leaf See root three return to one, rivers the same oneness.Meekness Conscience Lord, willing to do without regrets to the most bitter. Reading exercises to keep the body and

{Code...} encountered an error after running {code ...}. CREATE DATABASE IF NOT EXISTS `shopImooc1`;USE `shopImooc1`;DROP TABLE IF EXISTS `imooc_admin`;CREATE TABLE `imooc_admin` ( `id` int(10) auto_increment key, `username` varchar(20) not

Integrated JOTM configuration JTA transaction in spring: If you need to use more than one database in your business, we hope that in the business method, when the transaction of the data table of one database fails and is rolled back (rollback),

(i) Common SQL statements1.SELECT user () get logged in2.SELECT version () get MySQL release information3.SELECT now () get the current time4.SELECT database () Gets the name of the open databases(ii) database-related operations1. Create a database (

Data sheet: Data type: Three forms of help: Enter in CMD: Help to the keyword, or? The subject word to help or the \h to help. Creation of data tables: CREATE database IF NOT exists zbltest2 default character set ' UTF8 '; Use

What is a database?A database is a warehouse that organizes, stores, and manages data according to its structure, and each database has one or more different APIs for creating, accessing, managing, searching, and replicating the saved data.go to

The basic operation of SQL is nothing more than additions and deletions (CRUD), according to the object classification of operations, can be divided into three categories, library operations, table operations and data manipulationLibrary

This article mainly explains the mysql commands in centoslinux (redhatlinux). If your mysql is installed in source code, I add the "mysql installation directory bin" to the path environment variable, mysql startup script has been copied to etcinit.

PHP executes the SQL file and imports the SQL file to the database ,. PHP executes the SQL file and imports the SQL file to the database to read the file content $ _ sqlfile_get_contents (test. SQL); $ _ arrexplode (;, $ _ SQL); $ _ mysqlinewmysqli (

Getting started with MYSQL: basic database and table operations bitsCN.com Step 8: basic database and table operations Related links: MYSQL: Basic operations Http: // database/201212/173868 .html MYSQL 2: use regular expressions to search Http: //

1. Create a database mysqlgt; createdatabaseifnotexiststongcheng; QueryOK, 1 rowaffected (0.01sec) mysqlgt; 2. view the number of created databases 1. create database mysqlgt; create database if not exists tongcheng; Query OK, 1 row affected (0.01

Tutorial on using GTIDs replication protocol and interrupt protocol in MySQL MySQL5.6 has many new features, and many of them are interested in the global transaction sequence number function (GTIDs ). The reason why everyone is very interested in

Tutorial on using GTIDs replication protocol and interrupt protocol in MySQL, mysqlgtids MySQL5.6 has many new features, and many of them are interested in the global transaction sequence number function (GTIDs ). The reason why everyone is very

MySql Summary (1) I have read MySql for the second time. The main purpose of this time is to sum up the MySql system. I used to write my notes on MySql before, but I don't want to always take it with me in the future, so I will spend some time

SQL-mysql common operation statements (Entry level), sqlmysql 1. Enter the database: Mysql-u root-p Mysql-h localhost-u root-p database_name 2. List Databases Show databases; 3. Select a database: Use databases_name; 4. List data tables: Show tables;

: This article describes how to use PHP to execute SQL files and import SQL files to the database. For more information about PHP tutorials, see. How to use php to automatically execute the. SQL file is to obtain the content in the SQL file and then

How to use PHP to automate. sql files is to get the contents of the SQL file and then execute each sentence of the SQL statement at once. code example: // Read file contents $_sql = file_get_contents ('test.sql'= explode ('; ' New mysqli

Implementation principle of mysqldump and implementation principle of mysqldump MySQL backup can be divided into the following two types: 1. Cold backup 2. Hot Standby Among them, cold backup, as its name implies, is to turn off the database and use

Use php to execute the SQL file and import the SQL file to the database, Today, we will introduce how to use php to automatically execute. SQL files. In fact, it is very easy to get the content in the SQL file, and then execute each SQL statement

MySQL Common operation statement1.mysql-u root-p 2.mysql-h localhost-u root-p database_name2. List the databases:1.show databases;3. Select the database:1.use Databases_name;4. List the data tables:1.show tables;5. Display the properties of the