44.1 EXISTS and NOT EXISTS in SQL | Functions in Correlated Nested Queries | Database For GATE/NET

Опубликовано: 01 Январь 1970
на канале: CRACK GATE CSE

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This video is on EXISTS and NOT EXISTS clause in Structured Query Language.

The EXISTS and NOT EXISTS are the functions that are used in correlated nested query. These condition in SQL is used to test whether the result of a correlated nested query is empty (null) or not. The result of EXISTS is True or False. It can be used in a SELECT, UPDATE, INSERT or DELETE statement.

Important Video Links for SQL Lectures:
Introduction to Structured query language:    • 37. What is SQL? | Types Of SQL | Dat...
SQL Basics & Execution Flow:    • 38. SQL Basics | Execution Flow Of SQ...
Aggregate Functions:    • 39. Aggregate Functions | SQL | Easy ...
Group By Clause:    • 40. GROUP BY Clause | SQL Queries | D...
Having Clause:    • 41. HAVING Clause in SQL Queries | Ea...
Except Clause:    • 42. Except Clause | SQL | Equivalent ...
Nested Queries (Part 1) :    • 43.1 Nested Queries (Part-1) | Indepe...
Nested Queries (Part 2) :    • 43.2 Nested Queries (Part-2) | Co rel...
Exists and Not Exists Clause:    • 44.1 EXISTS and NOT EXISTS in SQL | F...
Practice Problems on Exists & Not Exists Clause:    • 44.2 Practice Problems on EXIST and N...
Division in SQL:    • 45. Division in SQL | Equivalent SQL ...

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