Subquery

External Article

Three Use Case Examples for SQL Subqueries

  • Article

There are many great tutorials on syntax, performance, and keywords for invoking subqueries. However, I wish to discover a tip highlighting selected SQL subquery use cases. Please briefly describe three SQL subquery use case examples. For each use case, cover how a subquery interacts with outer queries and the T-SQL for implementing the use case. Review excerpts from each example to show the value of implementing the use case.

2023-04-14

Stairway to T-SQL Beyond The Basics

Stairway to T-SQL: Beyond The Basics Level 3: Building a Correlated Subquery

  • Stairway Step

This stairway level will expand on the subquery topic by discussing a type of subquery known as a correlated subquery, and explores what a correlated subquery is and how it is different from a normal subquery.

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2019-05-08 (first published: )

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The Duplicate Cursor

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Question of the Day

The Duplicate Cursor

Can I run this code:

DECLARE ANewTable CURSOR FOR 
SELECT * FROM ANewTable

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