Re: type checking SQL expressions

Jean Morissette <jean.morissette666@videotron.ca>
11 Apr 2005 00:21:52 -0400

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From: Jean Morissette <jean.morissette666@videotron.ca>
Newsgroups: comp.compilers
Date: 11 Apr 2005 00:21:52 -0400
Organization: Compilers Central
References: 05-03-076 05-03-100 05-03-111 05-03-123
Keywords: SQL

Thanks for your responses, but I think that you have misunderstand me.
By 'type system' I was refering to formal typing rules. By exemple,
Trigoni has defined the typing rules of OQL in this paper: ?Towards a
Formal Type System for ODMG OQL? at
http://www.dcs.bbk.ac.uk/~niki/tr497.ps


It's really easy to check the type of each node in a parse tree when
the typing rules are defined.


Best regards,
Jean


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