if exists

Stored Procedure 6-trigger and Stored Procedure 6 I. triggers A trigger is a table-related named database object. This object is called when a specific event occurs on the table. It is a special stored procedure related to table events. Its

Objective During the development of the database, the complex business logic and the operation of the database are often encountered, and the stored procedures are used to encapsulate the database operations. If the project has more stored

-------------------------1. Build Library-------------------------02.USE [Master]03.GO04.if exists (SELECT * from sysdatabases where name= ' DB_TEST_MEMTB ')DROP DATABASE DB_TEST_MEMTB06.go07.CREATE DATABASE [DB_TEST_MEMTB]. On PRIMARY09. (NAME = N '

--Using regular expressions--^ Start,. Any characterSELECT name, continent, Population from country WHERE Name REGEXP ' ^. [a-e].* ' ORDER by Name;--$ endSELECT name, continent, Population from country WHERE name REGEXP '. *g$ ' ORDER by Name;SELECT

CREATE PROCEDURE Creates a stored procedure that is a collection of Transact-SQL statements that can be saved to accept and return user-supplied parameters. You can create a procedure for permanent use, or for temporary use in a session (local

First, connect MySQL Format: mysql-h host address-u user name-P user Password 1, connected to the MySQL on the computer. First open the DOS window, and then enter the directory Mysql\bin, and then type the command Mysql-u root-p, enter after the

1, connect MySQL Format: mysql-h host address-u user name-P user Password 1, connected to the MySQL on the computer. First open the DOS window, and then enter the directory Mysql\bin, and then type the command Mysql-u root-p, enter after the

How to determine the presence of a table or database in SQL Server, but in actual use, you need to determine the status State bit:Some of these state bits can be set by the user using sp_dboption (read only, dbo use only, single user, and so on): 1

Table partitioning test usage, mainly from other blog posts and mysql5.1 reference manuals MySQL beta version: mysql5.5.28 MySQL Physical storage file (with MySQL configuration datadir decision storage path) format Introduction Database Engine to

mysql command Daquan 1, connection MySQL format: mysql-h host address-u user name-P user Password1. Connect to MySQL on this machine. First open the DOS window, then enter the directory Mysql\bin, and then type the command Mysql-u root-p, enter

1, Connection MySQL format: mysql-h host address-u user name-P user Password1. Connect to MySQL on this machine. First open the DOS window, then enter the directory Mysql\bin, and then type the command Mysql-u root-p, enter after the prompt you to

Format: mysql-h host address-u user name-P user Password1. Connect to MySQL on this machine. First open the DOS window, then enter the directory Mysql\bin, and then type the command Mysql-u root-p, enter after the prompt you to lose the password.

1, Connection MySQL format: mysql-h host address-u user name-P user Password1. Connect to MySQL on this machine. First open the DOS window, then enter the directory Mysql\bin, and then type the command Mysql-u root-p, enter after the prompt you to

Format: mysql-h host address-u user name-P user Password1. Connect to MySQL on this machine. First open the DOS window, then enter the directory Mysql\bin, and then type the command Mysql-u root-p, enter after the prompt you to lose the password.

1. Connect MySQLFormat: mysql-h host address-u user name-P user Password1. Connect to MySQL on this machine. First open the DOS window, then enter the directory Mysql\bin, and then type the command Mysql-u root-p, enter after the prompt you to lose

1, Connection MySQL format: mysql-h host address-u user name-P user Password1. Connect to MySQL on this machine. First open the DOS window, then enter the directory Mysql\bin, and then type the command Mysql-u root-p, enter after the prompt you to

Today just in preparation for the company's interview, so the MySQL knowledge points to review, to find a good blog, but also to their own MySQL to do an accumulation.Please refer to the original text: http://www.cnblogs.com/zhangzhu/archive/2013/07/

SQL server to determine whether a table or temporary table exists, SQL server 1. Determine whether a data table exists Method 1: Use yourdb; goif object_id (N 'tablename', N 'U') is not nullprint 'There is 'else' print' doesn't exist' For

. Required dynamic library support Antl3.runtime. dll Castle. Core. dll Castle. DynamicProxy2.dll Iesi. Collections. dll Log4net. dll Nhib.pdf. ByteCode. Castle. dll Nhib.pdf. ByteCode. LinFu. dll Nhib.pdf. dll 2. Create a database If exists

1. Connect to Mysql Command: mysql-u -p 1. Connect to MYSQL on the local machine. First, open the DOS window, enter the mysql \ bin directory, and then enter the mysql-u User Name)-p password). Press enter and you will be prompted to enter the