Read this SQL tutorial to learn when to use ... return rows for which there is data in both tables. Compare the following query after using JOIN instead of WHERE: SELECT table1.column1, table2 ...

Simply join two SELECT statements with the UNION keyword to combine the results of two queries into a new table. When working with databases other than Microsoft's SQL Server, check the manual to ...

Prior to SQL Server 2017, query processing was a monolithic process ... interleaved execution for multi-statement table-valued functions (TVFs), batch-mode execution adaptive joins, and batch-mode ...