PostgreSQL – POFTUT

Category: PostgreSQL

SQL UPDATE Statement and Query with Examples 0

SQL UPDATE Statement and Query with Examples

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...

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How To Create, Use and Delete SQL View?

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...

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SQL “Select Into” Statement Usage Tutorial

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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How To Define, Add, Create User For Postgres or PostgreSQL Server?

PostgreSQL Database Server have a lot of tools to manage the suite. Creating user is one of the most popular issue to manage Postgres Database. In this tutorial we will examine how to create user with different rights, privileges, database. We will mainly follow createuser tool for these and createuser is a wrapper for the CREATE ROLE Sql statement. By the way we have allready examined the PostgreSQL Database Server installation in the...

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How To Install PostgreSQL Server Into Linux, Debian, Ubuntu, CentOS, Mint, Fedora, Redhat?

PostgreSQL is very popular open source database. It is used by big companies like Google, Facebook etc. PostgreSQL can be used without a cost. In this tutorial we will look how to install PostgreSQL into Linux distributions like Debian, Ubuntu, Mint, Fedora, CentOS, RedHat by using different ways like package management or downloading setup file. Show PostgreSQL Package Version For Ubuntu, Debian, Mint, Kali with Apt In apt-get  or apt based...

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How To Prevent SQL Injection in Php Applications?

I have an application and I have complex requests tot the server. There are a lot of database operations. Managing them can become very hard some times. In this situation how can I prevent sql injection attacks to my application. Use Prepared Statements Prepared statements are the way to bind client-side provided values with database queries. Prepared Data Object (PDO) acts middle proxy and prevents SQL injections. PDO is supported...

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What is The Difference Between Inner and Outer Join?

Sql is the language where a lot of data can be get with different logic. In an enterprise environment we may need to use complex SQL queries to get meaningful data. Inner is one of the logic where we join two tables with different magic. Example Tables In order to understand Inner and Outer Joins we will use following example tables with their data. We will use two tables those...

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