Query Extractor VS Code Extension

A simple VS Code extension to extract variables from SQL queries and copy them to your clipboard.

✨ Features

• Extracts variables of the form ${variableName} from SQL queries.
• Ignores comments (-- and /* */) by default.
• Works for both:
  • Whole .sql files
  • Selected text inside any file
• Automatically copies the found variables as a comma-separated list to your clipboard.
• Shows a notification with the count of variables copied.

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🚀 Usage

1. Open a .sql file or select a SQL query snippet.
2. Run the command Query Extractor: Extract Variables:
   • Open Command Palette (Ctrl+Shift+P / Cmd+Shift+P on macOS).
   • Search for "Query Extractor: Extract Variables".
3. If variables are found:
   • They are copied to your clipboard.
   • You’ll see a message like Copied 3 variables to clipboard.

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📦 Example

-- Sample SQL
SELECT *
FROM users
WHERE id = ${userId}
AND status = ${status}
AND role = ${userRole};

Extracted Variables:

status, userId, userRole

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⚙️ Installation (Local Dev)

1. Clone or download this repository.
2. Run npm install to install dependencies.
3. Open the project in VS Code.
4. Press F5 to launch a new VS Code window with the extension loaded.
5. Run the command from the Command Palette.

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🛠️ Development Notes

• Variables are matched using the regex:

  (?<!\\)(?:['"])?\$\{\s*([A-Za-z_][A-Za-z0-9_\.]*)\s*\}(?:['"])?

• This ensures escaped variables (\${var}) are ignored.

• Comments are stripped before parsing.

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📜 License

MIT License