The join order in a algebra.joinpath instruction is determined at runtime using a cost-model based on the actual state of affairs. regards, Martin On 9/5/12 12:18 AM, guangliang peng wrote:

I now still feel confused about join_path .I have tried the trace ,but the results show many lines with MAL language.It is very hard for me to find out the join path and order.can anyone help me?

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