I've added this here in case someone would like a guided SQL training course. This will better familiarize you with database schema and how to manipulate data.
To begin training make an account on SQLZoo.net:
Website: http://sqlzoo.net/w/index.php?title=Special:UserLogin&type=signup
Then begin reading the SQL material on the W3Schools website and refer to the SQL Training Curriculum below for required and optional chapters: http://www.w3schools.com/sql/default.asp
Some training links are also gathered from http://www.sqlteaching.com to provide a more complete learning experience, but no login creation is required.
SQL Training Curriculum (Section Chapters are located on W3Schools.com):
Section 1:
Introduction to SQL
SQL Syntax
SQL SELECT Statement
SQL SELECT DISTINCT Statement
SQL WHERE Clause
SQL AND & OR Operators
SQL ORDER BY Keyword
Exercises
- SELECT
http://sqlzoo.net/wiki/SELECT_basics
http://sqlzoo.net/wiki/SELECT_Quiz
http://sqlzoo.net/wiki/SELECT_from_WORLD_Tutorial
http://sqlzoo.net/wiki/BBC_QUIZ
http://sqlzoo.net/wiki/SELECT_from_Nobel_Tutorial
http://sqlzoo.net/wiki/Nobel_Quiz
http://www.sqlteaching.com/#!distinct
WHERE
http://www.sqlteaching.com/#!where_equals
http://www.sqlteaching.com/#!where_greater_than
http://www.sqlteaching.com/#!where_greater_than_or_equal
Section 1 Advanced:
- Subqueries
http://sqlzoo.net/wiki/SELECT_within_SELECT_Tutorial
http://sqlzoo.net/wiki/Nested_SELECT_Quiz
http://www.sqlteaching.com/#!nested
Section 2:
SQL INSERT INTO Statement
SQL UPDATE Statement
SQL DELETE Statement
SQL SELECT TOP Clause
(Just understand what SELECT TOP means if you see it in a query and why you might need to add/remove it)
Exercises
INSERT INTO
http://sqlzoo.net/wiki/INSERT_..VALUES
http://sqlzoo.net/wiki/INSERT.._SELECTLIMIT/SELECT TOP
http://www.sqlteaching.com/#!limit
(Similar to SELECT TOP, with different syntax)
Section 3:
SQL LIKE Operator
SQL Wildcards
SQL IN Operator
SQL BETWEEN Operator
Exercises
Section 4:
SQL Joins
SQL INNER JOIN Keyword
SQL LEFT JOIN Keyword
SQL RIGHT JOIN Keyword
SQL FULL OUTER JOIN Keyword
SQL UNION Operator
Exercises
http://sqlzoo.net/wiki/The_JOIN_operation
http://sqlzoo.net/wiki/JOIN_Quiz
http://sqlzoo.net/wiki/More_JOIN_operations
http://sqlzoo.net/wiki/JOIN_Quiz_2
http://sqlzoo.net/wiki/LEFT_JOIN
Section 4 Advanced:
http://sqlzoo.net/wiki/Self_join
http://sqlzoo.net/wiki/Self_join_Quiz
Section 5:
SQL Constraints
SQL PRIMARY KEY Constraint
SQL FOREIGN KEY Constraint
ADVANCED SECTIONS 6-9
Section 6:
SQL DROP INDEX, DROP TABLE, and DROP DATABASE
SQL ALTER TABLE Statement
Exercises
Section 7:
SQL Views
SQL Date Functions
SQL NULL Values
SQL NULL Functions
SQL General Data Types
Exercises
Section 8:
SQL Functions
SQL AVG() Function
SQL COUNT() Function
SQL FIRST() Function
SQL LAST() Function
SQL MAX() Function
SQL MIN() Function
SQL SUM() Function
Exercises
- FUNCTIONS
http://sqlzoo.net/wiki/FUNCTIONS
A) AVG
http://www.sqlteaching.com/#!avg
B) COUNT
http://www.sqlteaching.com/#!count
http://www.sqlteaching.com/#!count_where
http://sqlzoo.net/wiki/SUM_and_COUNT
C) MAX & MIN
http://www.sqlteaching.com/#!max_min
D) SUM
http://sqlzoo.net/wiki/SUM_and_COUNT
Section 9:
SQL GROUP BY Statement
SQL HAVING Clause
Exercises
REVIEW AND FINAL QUIZ
Review/Reference Chapter:
http://www.w3schools.com/sql/sql_quickref.asp
W3 Schools Quiz:
http://www.w3schools.com/sql/sql_quiz.asp
Optional Chapters:
SQL Injection
SQL Aliases
SQL INSERT INTO SELECT Statement
SQL CREATE DATABASE Statement
SQL CREATE TABLE Statement
SQL NOT NULL Constraint
SQL UNIQUE Constraint
SQL CHECK Constraint
SQL DEFAULT Constraint
SQL CREATE INDEX Statement
SQL AUTO INCREMENT Field
SQL Data Types for Various DBs
SQL UCASE() Function
SQL LCASE() Function
SQL MID() Function
SQL LEN() Function
SQL ROUND() Function
SQL NOW() Function
SQL FORMAT() Function
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