true

Learn SQL Programming from the Best Tutors

Affordable fees
1-1 or Group class
Flexible Timings
Verified Tutors

Search in

SQL Union Vs Union ALL

Umasankar Natarajan

06/06/2017 0 0

SQL UNION vs UNION ALL Operator Usage

UNION:

UNION combines the result set of two or more queries into a single result set. UNION removes duplicate records (where all columns in the results are the same).

UNION ALL:

UNION combines the result set of two or more queries into a single result set. UNION ALL does not remove duplicate records.

Important points:

The following points need to be considered when using the UNION or UNION ALL operator:

The number of columns and sequence of columns must be the same in all queries
The data types must be compatible.

0 Like 0 Dislike

Follow 0

Other Lessons for You

How To Connect To Server Using PHP?

It is very easy to connect to server using PHP and MYSQL. PHP is a very friendly Programming Language that any one can learn who know the basics of the Front End Development. PHP is a programming Language...

Dongri Mohammed Jawad

1 0

Microsoft Outlook

Microsoft Outlook is the preferred email client used to access Microsoft Exchange Server email. Not only does Microsoft Outlook provide access to Exchange Server email, but it also includes contact, calendaring...

ITech Analytic Solutions

0 1

What is the difference between Analytics and analysis?

Analysis> Separation of a whole into its component parts> Looks backwards over time, providing marketers with a historical view of what has happened Analytics > Defines the science behind the...

ITech Analytic Solutions

0 0

PHP

It is the base for many of the ecommerce websites. Many of the CMS develpoped in PHP platform.If programming cant done inititally try to think for logics and develop writing algorithms. Any doubts divyaravindiran@gmail.com.

Divyasri R.

0 0

Type Error In VBA

VBA Error Types: There are three types of VBA error that you may encounter when executing an Excel macro. These are: Compile Errors/Syntax errors: Compile Errors are recognized by the VBA compiler as...

Punit Kumar

1 0

Find SQL Programming Training near you

Online SQL Training

Looking for SQL Programming Training?

Learn from Best Tutors on UrbanPro.

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you

SQL Programming Questions

I want to teach, how can I?

17 Answers

How do I become master in SQL server? I am looking for real time case studies to write queries, stored procedures etc.

5 Answers

Which is a good reference book to learn SQL and database from basics?

20 Answers

I need your help to choose my career as I have three years of gap between my education. I know SQL. Can...

28 Answers

Looking for SQL Programming Classes?

The best tutors for SQL Programming Classes are on UrbanPro

Select the best Tutor
Book & Attend a Free Demo
Pay and start Learning

Learn SQL Programming with the Best Tutors

The best Tutors for SQL Programming Classes are on UrbanPro

I am a Student I am a Tutor
Name*	Please enter your full name. Please enter institute name.
Email*	Please enter your email address.
Phone*	Please enter a valid phone number.
Location*	Please enter a pincode or area name.
City*	Please enter city name.
Category*	Please enter category.
Gender*	Male Female Please select your gender.
Email ID/ Mobile No.*	Please enter either mobile no. or email.
Enter Password*	Please enter OTP Please enter Password Sorry, this phone number is not verified, Please login with your email Id.