Basic SQL Tutorials

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  • How to create update and delete columns in SQL

    One of the three main task you in SQL is creating, updating and deleting columns of tables. This tutorial explains how to create, update and delete co
    http://javarevisited.blogspot.com/2012/12/sql-query-to-add-modify-and-drop-column-not-null...
  • SQL query to find second Maximum Salary from Table

    How to find 2nd maximum, 3rd maximum or Nth maximum salary or Employee is a classical SQL Interview question. There are many ways to find Nth highest
    http://javarevisited.blogspot.com/2012/12/how-to-find-second-highest-or-maximum-salary-sql.html
  • SQL command to copy table with data

    It is a good decision to take backup of a table before doing any modification or inserting data on that table. In this article, we will learn a SQL co
    http://javarevisited.blogspot.com/2012/12/sql-query-to-copy-duplicate-or-backup.html
  • How to find duplicate rows in a table in MySQL and Orac

    Many times, we need to find out duplicate records in a table. This article shares couple of SQL queries, which we can use to find duplicate rows. thes
    http://javarevisited.blogspot.com/2012/12/how-to-find-duplicate-records-in-table-mysql-que...
  • Inner Join of three tables in SQL MySQL Oracle Server

    INNER JOIN is used to fetch data from multiple tables in one query, it helps to save database round trips, but getting data from more than two tables
    http://javarevisited.blogspot.com/2012/11/how-to-join-three-tables-in-sql-query-mysql-sqls...
  • Attach MDF file to the SQL database without LDF file

    Attaching .mdf file to the SQL database without .ldf file is a easy task but need attention. No matter SQL server shutdown properly or not.
    http://sqldbfriend.blogspot.in/2013/02/need-to-attach-mdf-file-without.html
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    • Cat:Misc

  • Correlated vs Noncorrelated Subquery example in SQL

    Main difference between Correlated and Noncorrelated subquery is that, Correlated subquery depends upon Outer query and can not execute by its own whi
    http://javarevisited.blogspot.com/2012/07/subquery-example-in-sql-correlated-vs.html
  • Dont delete truncate your tables in SQL

    Dont Delete , truncate it. If you are working in a huge table you need to be very very careful while executing any query because due to large data an
    http://javarevisited.blogspot.com/2011/10/how-to-use-truncate-and-delete-command.html
  • SQL Select Statement

    Learn the fundamental commands of SQL: Select From.
    http://www.1keydata.com/sql/sqlselect.html
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    • Cat:Misc

  • SQL Exercises

    Tutorial mainly uses syntax constructions of SQL-92 standard. It will help you to master in wide and varied possibilities for formulating queries.
    http://www.sql-ex.ru/
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    • Cat:Misc

  • How to Join Tables

    Learn how to join 2 tables together and display information from both tables as needed.
    http://www.sqltutorials.net/sql-joins/joining-tables.html
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    • Cat:Misc

  • Inserting Data into SQL Tables

    Inserting data is at the heart of a database. Learn how to easily use the insert operator in SQL.
    http://www.sqltutorials.net/insert-into/inserting-data-into-sql-tables.html
    • 33087 Hits
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    • Cat:Misc



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