SQL Queries

Understanding MERGE to Insert, Update, and Delete Data Simultaneously

Introduction In modern database management, data synchronization plays a critical role in processes like data warehousing and ETL […]

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Understanding CROSS APPLY and OUTER APPLY in SQL Server

Introduction When working with table-valued functions (TVFs) or subqueries, the CROSS APPLY and OUTER APPLY operators provide flexible […]

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Creating a Date Dimension (Calendar Table) in SQL Server

Introduction A calendar or date dimension table is essential for data analysis and reporting. It allows users to […]

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