A common SQL habit is to use SELECT * on a query, because it’s tedious to list all the columns you need. Plus, sometimes those columns may change over time, so why not just do things the easy way? But ...

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 ...

In a SQL select statement how do I get it to only display a record once, regardless of how many times it is found.<BR><BR>I have a table with system names. In a lot of cases the system name is listed ...

Well, if you happen to be using Sql Server you can do that sort of thing in T-Sql. In Oracle, you can also accomplish the same thing using pl/sql. Either way i'd do it in a stored ...

SQL is neither the fastest nor the most elegant way to talk to databases, but it is the best way we have. Here’s why Today, Structured Query Language is the standard means of manipulating and querying ...

Beginning in Version 7 of SAS/ACCESS software, there are a number of changes in the way the SQL Procedure Pass-Through Facility works. For more information, see SQL Procedure Pass-Through Facility ...

The SQL Procedure Pass-Through Facility is an extension of the SQL procedure that enables you to send DBMS-specific statements to a DBMS and to retrieve DBMS data. You specify DBMS SQL syntax instead ...

Assuring optimal performance of database applications starts with coding properly formulated SQL. Poorly written SQL and application code is the cause of most performance problems. As much as 75% of ...

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