Introduction---------->intro.php

SQL Commands----->sql_command.php


SQL Queries
----------------------->createdb.php
----------------------->dropdb.php
----------------------->createtable.php
----------------------->droptable.php
----------------------->altertable.php
---------------------->insert.php
---------------------->update.php
---------------------->select.php
--------------------->delete.php

Advance---------advance.php
-------alter,alias,between,case,check,default,drop,in,increment,
full_join,inner_join,outer_join,left_join,right_join,like,not_null
nulls-------------->


Function----->function.php
--and-or,avg,count,first,format,group by,orderby,having,isnull,last,lcase
len,max,mid,min,now,replace,round,space,substring,sum,ucase,dates-


run queries------run_query.php

Interview------------interview.php

Quiz----------------->quiz.php