捡芝麻拾谷子

Essentially, association rule mining is all about counting. So it fits database environment very well, especially big scalable database. Wit...

This week, the greenplum people came on-site and talked about a few tricks that I am very new to. The ones I have most feeling about are (1)...

Today is the second of our sql training. The stuff was too trivial yesterday. But it starts to get interesting now. The subquery refers to t...