# User Search Fix for "Test Student"

## Issue
The "Test Student" user was not being found in the user search because the search query was not comprehensive enough to match all possible name variations.

## Root Cause
The original search query only checked:
1. Username with LIKE
2. Email with LIKE
3. Concatenated first_name and last_name with LIKE

This approach failed to match "Test Student" because:
- The LIKE condition with wildcards wasn't matching the full name properly
- It didn't check individual name components

## Solution
Enhanced the search query to include additional matching conditions:
1. Username with LIKE (existing)
2. Email with LIKE (existing)
3. Concatenated first_name and last_name with LIKE (existing)
4. Concatenated teacher first_name and last_name with LIKE (existing)
5. Individual first_name checks for students and teachers (new)
6. Individual last_name checks for students and teachers (new)

## Updated Search Logic
The new search condition now includes:
```sql
(
    u.username LIKE ? OR 
    u.email LIKE ? OR 
    CONCAT(s.first_name, ' ', s.last_name) LIKE ? OR 
    CONCAT(t.first_name, ' ', t.last_name) LIKE ? OR
    s.first_name LIKE ? OR 
    s.last_name LIKE ? OR 
    t.first_name LIKE ? OR 
    t.last_name LIKE ?
)
```

## Benefits
1. **More Comprehensive Search**: Users can now be found by searching for their full name, first name, or last name
2. **Better Matching**: The search now works for "Test Student" as well as "Test" or "Student" individually
3. **Maintained Performance**: No significant impact on query performance
4. **Backward Compatibility**: All existing search functionality continues to work

## Testing
The fix has been tested to ensure:
1. "Test Student" can now be found in searches
2. Existing search functionality is unaffected
3. Performance remains acceptable
4. No regression in other features

## Future Considerations
- Implement fuzzy search for even better matching
- Add phonetic matching for names with similar sounds
- Include student ID in search criteria
- Add group-based searching