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We generated some random bytes and sent them off to our parser. Most of the time they didn’t even make it past the scanner/lexer, because most byte sequences aren’t valid SQL tokens.
Then we had SQL tokens in the correct order which passed the lexer and parser, but not the semantic (type) checker. In order to cross that hurdle, we would need something that was aware of types, tables, columns, and their availability in different scopes.
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https://www.cockroachlabs.com/blog/sqlsmith-randomized-sql-testing/
writes good things.
The text was updated successfully, but these errors were encountered: