Having AI Explain SQL | Finding Joins That Increase Row Counts

When I had AI write SQL for me, the total sales came out higher than the original table. Before fixing the calculation ...
Ars Technica

SQL - Joining two databases

I am trying to join two databases in an SQL query. Database A has a table with a 5 digit client number and another table with a 5 digit matter number. The other database, B, has a table with one field ...
TechRepublic

Understand the effects of NULLs on inner and outer JOINs

In this SQL Server tip, Arthur Fuller explains the effects of NULLs, and the different results obtained by inner and outer JOINs. SQL Server developers must understand two things: the difference ...
techtarget

Parallel processing: Using parallel SQL effectively

This chapter excerpt on Parallel SQL (download PDF) is taken from the book Oracle Performance Survival Guide: A Systematic Approach to Database Optimization. Get pertinent information on optimizing ...