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Message Posted: Sun, 15 May 2000 @ 01:51:21 GMT
However, if you are building some sort of Star and/or summary structure where you expect a high percentage of zero values, then go ahead and compress on zero.
I ran across a customer where they built a structure where 75% of the column values were zero, and they were storing a large number of numeric summary columns on a row. They experienced large savings in space and full table scan (data mining) query response time.
Teradata Certified Implementation Specialist
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