SQL Summary

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Table of contents

SQL Basic
SQL HOME
SQL Intro
SQL Syntax
SQL Select
SQL Distinct
SQL Where
SQL And & Or
SQL Order By
SQL Insert
SQL Update
SQL Delete
SQL Demo
SQL Try It
SQL Advanced
SQL Top
SQL Like
SQL Wildcards
SQL In
SQL Between
SQL Alias
SQL Joins
SQL Inner Join
SQL Left Join
SQL Right Join
SQL Full Join
SQL Union
SQL Select Into
SQL Create DB
SQL Create Table
SQL Constraints
SQL Not Null
SQL Unique
SQL Primary Key
SQL Foreign Key
SQL Check
SQL Default
SQL Create Index
SQL Drop
SQL Alter
SQL Increment
SQL Views
SQL Dates
SQL Nulls
SQL isnull()
SQL Data Types
SQL Functions
SQL Functions
SQL avg()
SQL count()
SQL first()
SQL last()
SQL max()
SQL min()
SQL sum()
SQL Group By
SQL Having
SQL ucase()
SQL lcase()
SQL mid()
SQL len()
SQL round()
SQL now()
SQL format()
SQL Quick Ref
SQL Hosting
SQL Summary
SQL Quiz
SQL Quiz

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# You Have Learned SQL, Now What?

## SQL Summary

This SQL tutorial has taught you the standard computer language for accessing and manipulating database systems.

You have learned how to execute queries, retrieve data, insert new records, delete records and update records in a database with SQL.

You have also learned how to create databases, tables, and indexes with SQL, and how to drop them.

You have learned the most important aggregate functions in SQL.

You now know that SQL is the standard language that works with all the well-known database systems like MS SQL Server, IBM DB2, Oracle, MySQL, and MS Access.

## Now You Know SQL, What's Next?

Our recommendation is to learn about ADO or PHP MySQL.

If you want to learn more about ADO, please visit our ADO tutorial.

If you want to learn more about MySQL, please visit our PHP tutorial.

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