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All the Perl that's Practical to Extract and Report

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  • This is actually how I teach SQL, insisting on the explicit syntax for clarity (and sometimes correctness, as you point out in your example). See sql_tutorial.pdf [] for the material I use. I absolutely forbid the use of commas as join operators.

    Unfortunately, Oracle has no support for standard SQL, using it's own odd syntax for joins (comma-separated tables, and where clauses with optional "+" symbols to denote outer join directions). Ugly.