SQL databases provide structured data storage capabilities. We can store data in tables with columns and rows. Other useful features for SQL databases are update capabilities. We can update SQL databases data in different ways and constraints. In this tutorial, we will learn how to update database table data with an SQL UPDATE statement and query single record, multiple records or conditional situations with examples. SQL UPDATE Syntax SQL Update...
MySQL or MariaDB database servers can be managed in different ways. Generally, GUI tools are provided because of their easiness. But in some cases command line connection may be required to connect and management MySQL and MariaDB database server. Install MySQL/MariaDB Client For Ubuntu, Debian, Kali, Mint We will start by installing MySQL/MariaDB command line client in the deb based distributions like Ubuntu, Debian, Kali, Mint etc. The package is...
SQL Programming language and SQL Database engines provide some useful mechanisms in order to make management of the data easier. SQL View is one of them which can be used to create a table from a SQL result set. What Is SQL View? SQL View is a virtual table which does not exist in a database physically. SQL View table is created from an SQL statement which is generally a...
SQL or Structured Query Language is a standard language used to to create, list, update, delete databases, tables, records. It provides this functionality with different type of commands. In this tutorial we will learn popular and useful SQL commands. Command Types SQL language is very advanced language which provides large command set. The commands are categorized according to their usage. Here is types of SQL commands. DDL – Database Definition...
SQL provides different statements in order to select into existing table, variable, temp table in various database servers like Oracle, MySQL, PostgreSQL etc. In this tutorial we will examine how to use Select Into SQL statement for different cases. Syntax Select Into statement syntax is the same as with Select syntax. We just need to a INTO between SELECT and FROM. We can also use WHERE statement in order to filter rows.
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SELECT columns INTO newtable [IN externaldb] FROM oldtable WHERE condition; |
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MySQL provides ability to create and users from its shell. Security is important part of the database servers. In this tutorial we will examine how to create users and manage privileges in MySQL database server. We will specifically learn restrict user access to a database, database server, grant different type of privileges, print these privileges. Login To MySQL Shell In order to create user and manage privileges of this user...
MySQL or MariaDB is very popular opensource databases servers. While using these database servers we may need to know the version of the client or server. We can use features according to these version numbers. In this tutorial we will look how to list MySQL and MariaDB database server versions. mysql –version Command mysql is a client command used to connect and manage database server. We can use –version option in order...
MySQL stores given relation data in tables. While using tables we generally need to check and list existing tables. We can use different ways to list tables. In this tutorial we will learn how to use show tables and Select table_name in order to list and print table names. Connect MySQL Interactive Shell We need to connect or run command in MySQL to list table names. We will connect to the interactive...
MySQL is free and opensource database server which is very popular in opensource community. MySQL is used by alot of applications and companies like Facebook, Google etc. In this tutorial we will learn how to install MySQL into deb or apt based distributions like Ubuntu, Debian, Mint and Kali. This guide can be used for other deb or apt based distributions too. Update Repository Information It is not a reuirement but a best practice...
MySQL service provides different connection methods. We generally prefer TCP/IP way where connection is established over Network Socket. There is alternative way named Socket which is connected over local system. During connection we may get error like Can’t connect to local MySQL server through socket ‘/var/run/mysqld/mysqld.sock’ . In this tutorial we will look to solve this problem. Solution 1 – Start The Service Socket is created by the MySQL service and...
