docs: use portable SQL identifiers (my_table) in examples; add note o… #974
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This PR updates README.md to use portable SQL identifiers in code examples:
Changes:
my-tablewithmy_tablein DDL and SQL examples (lines ~161, ~175)Rationale:
Hyphens in SQL identifiers require database-specific quoting (backticks in MySQL, double quotes in PostgreSQL/SQL Server), reducing portability. Using underscores ensures examples work consistently across all major databases without special syntax. This improves the documentation's accessibility for users working with different database systems.