SQL Count Without Group By to Return Zero When No Matches Using SQL Server's `CASE` Statement or Left JOINs

Understanding One-to-Many Relationships in Databases and Quicksight Joins

Using Scalar Variables and Cursors in SQL Server: Best Practices and Examples

Counting Distinct Units with Condition Based on Different Column in SQL

Improving SQL Queries by Understanding Table Aliases and Qualifying Column References

Optimizing Queries with Multiple Union All and Selects from the Same Table Using Cross-Pivot or Crosstabbing

Understanding the Impact of Indexing on Query Performance in SQL Server: A Comprehensive Guide to Optimizing Index Strategies

Recursive SQL Query to Extract Related Tasks from Hierarchical Data

Understanding Unicode Collation: A Key to Resolving Entity Framework 6's Unique Constraint Issues in Databases

How to Use UNION ALL with Implicit Data Type Conversions in SQL Server