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All the Perl that's Practical to Extract and Report

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Writing a DBD Module 5 Comments More | Login | Reply /

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  • For a secret project I worked on (which will eventually may DBD::Something) it was easier to write a new regex based SQL-like parser. SQL::Statement (a few months ago) was too strict, and didn't allow me to bend the rules.

    • Has anyone considered a Parse::RecDescent based SQL parser?

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      J. David works really hard, has a passion for writing good software, and knows many of the world's best Perl programmers
      • It's not exactly what you mean, but Damian uses Parse::RecDescent to go the other way, turning English questions into valid SQL statements. If it's possible to go that way, surely parsing the much-more-regular-than-English SQL variant of any particular database has to be feasible.

        Random thought: would it make any sense to skip ahead a bit by poking around in the source of open source databases like MySQL & PostgreSQL and using their SQL parsing code as the basis for a general purpose SQL interpreter? Or would that be more trouble than it's worth? I suppose it depends on what you're trying to accomplish...

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        DO NOT LEAVE IT IS NOT REAL.

        • Random thought: would it make any sense to skip ahead a bit by poking around in the source of open source databases like MySQL & PostgreSQL and using their SQL parsing code as the basis for a general purpose SQL interpreter?

          The SQL::Translator [cpan.org] folks have discussed (OK, I brought it up [sourceforge.net]) using the provided yacc grammars as the basis for the MySQL and Pg parsers, although none of us has done anything with it yet.

          Patches welcome... [sf.net]

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          (darren)
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