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 ...

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 ...

I hope this is the right place for this type of question. I apologize for the question length but to try and be complete I'll include a bit of background.<BR><BR>I am currently working on a project ...

Hi I need some help with a select statement in MS SQL. I have a table that need to check if there duplicate items there. The problem is that each items is based off of 4 fields in the table. Here is ...

What’s your average success rate of getting a SQL statement right on the first try? In best case, you botched a simple statement without side effects and just have to try again with correct syntax or ...

To update the data, you can specify view descriptors in the PROC SQL DELETE, INSERT, and UPDATE statements. You must have access to the data through appropriate ADABAS and/or NATURAL security options ...

Inside a relational database management system, the princi­pal persisted data structure is considered a logical relation. Operations performed against that data within the RDBMS result in a logical ...

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 ...

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 ...