If you are working with Excel spreadsheets or workbooks, juggling multiple tables of data, at some time you might need to combine them into one. Rather ...

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【Abstract】 The join operation is used to combine records of two or more tables. This essay explains the handling of join operations using SQL and SPL. By exploring solutions and basic principles of ...

A few months ago a new option was added to the Sql.Database and Sql.Databases functions in Power Query in Power BI and Excel which allows Power Query queries that combine data from different SQL ...

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement.

Joey on SQL Server Deep Dive into SQL Server 2022's Query Performance Features, Part 2: PSP Optimization Reduce workload times with this handy feature that can benefit every database pro.

An update to the cardinality estimator feature in SQL Server 2022 will be one of the biggest changes to the database engine since its inception.

Figure A Transfer the Excel Table into Power Query. How to add a new column in Power Query Our goal is to combine the t-shirt sales by client into a single cell for each client.

Notice how the original SQL query I used as the source of the table is used as a subquery in this query. This is how Power BI generates its SQL and this is why there are limitations on the SQL you can ...