Why Should I Avoid Using Reserved Keywords Like 'User' as Table Names in MS SQL Server?

MS SQL Server Table Naming: Avoiding Reserved Keywords

Creating tables in MS SQL Server requires careful consideration of naming conventions. A critical aspect is avoiding reserved keywords (also called system keywords). These words have predefined functions within SQL Server and cannot be used as identifiers for database objects.

Your question about using "User" as a table name exemplifies this problem. SQL Server typically highlights reserved words (often in pink) to alert you to potential conflicts. Using them is strongly discouraged to prevent errors and ambiguity.

Problems Caused by Reserved Keywords

Employing reserved keywords as table names can result in several issues:

• Syntax Errors: Queries and table manipulations may fail with syntax errors.
• Semantic Conflicts: The keyword's inherent meaning clashes with its use as a table name, leading to unpredictable behavior.
• Future Incompatibility: Microsoft may add new keywords in future SQL Server updates, invalidating existing table names.

Best Practices for Table Naming

To avoid these pitfalls, adhere to these naming guidelines:

• Avoid Reserved Keywords: Consult the official Microsoft documentation for a complete list: https://www.php.cn/link/31914689514c64a97d950a8d9eea3eeb
• Singular Nouns: Use singular nouns (e.g., "User" is preferred over "Users").
• Alphanumeric Start: Begin table names with a letter (not a number or special character).
• Character Limit: Keep table names under 128 characters.

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