SQL Syntax Examples: Difference between revisions

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# DESCRIBE TABLE customer;
# DESCRIBE TABLE customer;
# SELECT usertable.UserName, Posts.PostID FROM usertable LEFT JOIN Posts ON usertable.UserID = Posts.UserID ORDER BY usertable.UserName;  
# SELECT usertable.UserName, Posts.PostID FROM usertable LEFT JOIN Posts ON usertable.UserID = Posts.UserID ORDER BY usertable.UserName;  
# SELECT DISTINCT Name FROM forumusers;


== Other Pages with SQL Examples ==
== Other Pages with SQL Examples ==

Revision as of 08:42, 1 July 2017

A list of SQL statements to serve as examples of syntax.

Primary Commands

  • SELECT - extracts data from a database
  • UPDATE - updates data in a database
  • DELETE - deletes data from a database
  • INSERT INTO - inserts new data into a database
  • CREATE DATABASE - creates a new database
  • ALTER DATABASE - modifies a database
  • CREATE TABLE - creates a new table
  • ALTER TABLE - modifies a table
  • DROP TABLE - deletes a table
  • CREATE INDEX - creates an index (search key)
  • DROP INDEX - deletes an index

Examples

  1. SELECT * FROM customers;
  2. SELECT grade, age, reportcategory FROM students WHERE classroom = 3;
  3. SELECT username FROM usertable WHERE username like "%icol%";
  4. DESCRIBE TABLE customer;
  5. SELECT usertable.UserName, Posts.PostID FROM usertable LEFT JOIN Posts ON usertable.UserID = Posts.UserID ORDER BY usertable.UserName;
  6. SELECT DISTINCT Name FROM forumusers;

Other Pages with SQL Examples