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When you execute a statement like this, SQL creates a new table—the results recordset—based on the contents of table1 and table2. You specify which fields from the two tables you want to see ...
Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement.
How to Create a Table From Query Results in Microsoft SQL. If your business uses relational databases to store data, you may have used a SQL SELECT clause to create new tables from query results.