Implement Alert Feature for UPDATE Commands Without WHERE Clause

[NDiiong]

Feature Description

Implement a safety alert feature that detects and warns users when they attempt to execute an UPDATE command without a WHERE clause, helping prevent unintended mass data updates.

Requirements

1. Alert Detection:

   • Detect UPDATE commands that do not include a WHERE clause
   • Exclude temporary tables from this alert check
   • Parse and analyze the SQL command before execution

2. User Interaction:

   • Display a warning message to the user when an unsafe UPDATE is detected
   • Present a confirmation dialog with two options:
     • "Yes": Proceed with the UPDATE command execution
     • "No": Cancel the UPDATE command execution

3. Implementation Details:

   • Add SQL parser functionality to identify UPDATE statements
   • Implement logic to detect missing WHERE clauses
   • Create a mechanism to identify and exclude temporary tables
   • Design and implement the user confirmation dialog
   • Handle the user's response appropriately (proceed or cancel)

Technical Considerations

• Ensure the alert system doesn't significantly impact query execution performance
• Implement proper error handling for edge cases
• Consider adding this as a configurable feature that can be enabled/disabled
• Handle cases where WHERE clause might be present but evaluates to always true

Acceptance Criteria

• Alert is triggered when an UPDATE command without WHERE clause is detected
• Temporary tables are successfully excluded from the check
• User confirmation dialog is displayed with "Yes" and "No" options
• Selecting "Yes" allows the command to proceed
• Selecting "No" successfully cancels the command
• Feature works consistently across different SQL dialects supported by the tool
• Proper error handling is implemented
• Code is properly documented
• Unit tests are implemented

Example Usage

-- This should trigger the alert
UPDATE users SET status = 'inactive';

-- This should NOT trigger the alert (has WHERE clause)
UPDATE users SET status = 'inactive' WHERE last_login < '2024-01-01';

-- This should NOT trigger the alert (temporary table)
UPDATE #temp_users SET status = 'inactive';