On Jun 16, 2014, at 11:18 AM, Yash Sharma <[EMAIL PROTECTED]> wrote:
The eigenbase wiki described how to write a rule. See the archived page [1]. The API has changed somewhat but it covers the concepts well.

The optiq-csv tutorial [2] also describes how to write a simple rule.

There are some debugging tips in the HOWTO [3].

Julian

[1] http://www.hydromatic.net/wiki/HowToWriteNewOptimizerRules
[2] https://github.com/julianhyde/optiq-csv/blob/master/TUTORIAL.md
[3] https://github.com/julianhyde/optiq/blob/master/HOWTO.md
 
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