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Radoop - Radoop - Big Data analytics made easy. PHP Editor Review - Articles Sql Phpmyadmin. Learning SQL Using phpMyAdmin Structured Query Language is a non-procedural language used to define, manipulate and retrieve data. It was developed by IBM (System/R project) in 1974-1979. The American National Standards Institute (ANSI) published in 1986 the first official standard of the language (later revised in 1989, 1992 and 1999), and since then, the industry has widely adopted SQL as the relational database language. Virtually every database system nowadays is interfaced through SQL. The specific data architecture addressed by SQL is called the relational architecture.

In this article, we will use MySQL, a popular open-source implementation of SQL that is deployed by most Web host providers. To be able to do the exercises in this guide, you will need an access to a MySQL server. This guide will show you the SQL syntax, sometimes by asking you to enter statements, and sometimes by letting you see how phpMyAdmin generates SQL statements based on your actions using the interface. Joins. Cursor (databases) In computer science, a database cursor is a control structure that enables traversal over the records in a database.

Cursors facilitate subsequent processing in conjunction with the traversal, such as retrieval, addition and removal of database records. The database cursor characteristic of traversal makes cursors akin to the programming language concept of iterator. Cursors are used by database programmers to process individual rows returned by database system queries.

Cursors enable manipulation of whole result sets at once. In this scenario, a cursor enables the rows in a result set to be processed sequentially. In SQL procedures, a cursor makes it possible to define a result set (a set of data rows) and perform complex logic on a row by row basis. A cursor can be viewed as a pointer to one row in a set of rows. To use cursors in SQL procedures, you need to do the following: To work with cursors you must use the following SQL statements DECLARE cursor_name CURSOR FOR SELECT ... Windows CMD Commands. Building Dynamic Websites | Harvard Video Course. Since 2008, Academic Earth has worked diligently to compile an ever-growing collection of online college courses, made available free of charge, from some of the most respected universities.

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