Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

SELECT options refine results As we saw in the last article, the SQL SELECT ... use this statement while selecting multiple column names and use multiple columns to group the function results.

The SELECT statement tells the query optimizer what ... I’ll explain this by using examples in DDL, using SQL Server syntax. The short version of this is fairly simple. Every table that you ...

Analyze database contents using basic, intermediate and advanced SQL statement syntax and usage. Demonstrate capability to query data from multiple tables using SQL JOINS. Create and modify database ...