As we saw in the last article, the SQL SELECT statement has the widest variety of query options, which are used to control the way data is returned. These options come in the form of clauses ...

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 ...

Unlike the previous version of SQL Server, SQL Server 2000 lets you specify collations for almost any task, at virtually every level within a database — from table column to SELECT statement ...

Anyone who has seen a ten- or twenty-page SQL SELECT statement can attest to this SQL mosaic-ability. Sadly, this simple and elegant aspect leads to confusion among many who should know better. While ...

Do you want to find out how to avoid duplicates in the results of a SQL SELECT query? This article will show you how. To avoid duplicate results: Simply use the DISTINCT clause and between the SELECT ...

Oracle9i offers some great tools to make it easy to view the execution plan and trace information for a SQL statement. Prior to Oracle8i, you had to create a plan table and execute special syntax ...