Why not Columnar with a Primary Index? What's a PA?

Columnar with a primary index (PI) is supported in Teradata Database 15.10. But what are the caveats in using it?

This presentation discusses this new capability and the pitfalls to avoid.  In addition to columnar with a primary index or no primary index, columnar is supported with the new primary AMP index. This presentation discusses how a primary AMP index avoids some of the pitfalls of using columnar with a primary index while improving join and aggregate performance compared to having no primary index.

 

Presenter: Paul Sinclair, Software Engineer, Teradata Corporation