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Using MySQL views

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MySQL Views using
  • Advantages and restrictions of using views
  • Creating, altering and dropping views
  • Algorithms of views
  • Setting security configuration, SQL SECURITY and DEFINER properties
  • Updatable views
  • View metadata

 

view – is a database object based on a SELECT query that has tables or other views specified inside it. In other words, this is a named query that is stored in a database as a separate object. Unlike a table, a view is not a data storage.

When referring to a view, we just receive data that is returned by the internal SELECT query.

 

Use of a DELIMITER in MySQL

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delimiter mysql

Depending on the nature of the script, you may need control of the delimiter used to separate the statements that will make up a script. The most common example of this is where you have a multi-statement stored routine as part of your script. In this case if the default delimiter of ; is used you will get an error when you attempt to execute the script.

 

The DELIMITER command is used to change the standard delimiter of MySQL commands. The standard command delimiter is the ';' character that defines the end of the query.

Script for example:

INSERT INTO actor VALUES (1, 'PENELOPE', 'GUINESS', '2006-02-15 04:34:33');
INSERT INTO actor VALUES (2, 'NICK', 'WAHLBERG', '2006-02-15 04:34:33');
INSERT INTO actor VALUES (3, 'ED', 'CHASE', '2006-02-15 04:34:33');
INSERT INTO actor VALUES (4, 'JENNIFER', 'DAVIS', '2006-02-15 04:34:33');
INSERT INTO actor VALUES (5, 'JOHNNY', 'LOLLOBRIGIDA', '2006-02-15 04:34:33');

 

Now let’s have a look at the following script. It consists of several INSERT queries, procedure creating and several more INSERT queries.

 

Learn MySQL With Sakila sample Mysql Database

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sakila-database-MySQL

Review a Sample Database Using a SQLyog MySQL GUI Tool

Obtain the example Sakila database from the MySQL website to examine a professionally designed database and use a SQLyog GUI for MySQL instead of the command line.

 

What should I enter as 'hostname' when connecting to a MySQL server at an ISP using mysql GUI.

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Connect-to-mysqlIt depends on the systems and the network settings at your ISP. The systems that ISP's operate are too numerous to mention. Some operate almost all their server programs on one very powerful (UNIX-) machine, others operate a network of many computers that are basically pc-type hardware.

Some use Linux/Unix operating systems other Windows server systems (and some mix it!). And ISP's vary in size from 200 customers to 2.000.000. They can't all operate the same systems!

But the general answer is that probably the ISP operates some nameserver internally. Such nameserver will typically be configured with the some name like 'mysqlserver' pointing to the ip of the mysqlserver on the local network.

 

15 practical examples of using commands Mysqladmin to administer a MySQL server

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15 examples mysqladminIn the 15 examples of the use mysqladmin command below, using the password root Mysql tmppassword. Change it to your password

1. How to change the root password for Mysql?

 
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