agentm/project-m36

Implement "WITH" relvar macro

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#57 opened on 2016年11月28日

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help wanted

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説明

The TutorialD WITH macro allows the user to create a handy relvar macro useable for the duration of a single expression.

WITH (ct:=s{city,status}) : <relational expression>

The implementation of this feature may hint that we need to finally separate the AST from the execution ADT.

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