Sql - Intersect

Data System Architecture

About

Set - Intersect in SQL

Visualisation

Venn Diagram

Example

(  SELECT * FROM R1  ) INTERSECT ( SELECT * FROM R2 )

Management

To Relational Algebra

Relational Algebra - Intersect operator (intersection) <MATH> \Large R1 \cap R2 </MATH>





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Data System Architecture
SQL - Null

NULL value in SQL represents missing data in SQL. NULL has its own data domain and implements therefore its own behavior. The most important one being that: An equality comparison of two NULL values...



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