Resolving Ewis

Usage

When you encounter an EWI code (e.g., SSC-EWI-0021, SSC-EWI-TS0087):

1. Check for existing reference: Look in the reference/ folder for a file matching the EWI code (e.g., reference/SSC-EWI-0021.md)

2. If the reference exists:

   • Read and follow the guidance in the reference file
   • Apply the documented fix patterns to resolve the EWI
   • After successfully resolving the issue, update the reference file with any new learnings, edge cases, or patterns discovered

3. If the reference does not exist:

   • Resolve the EWI using your knowledge of SQL Server and Snowflake
   • After successfully resolving the issue, create a new reference file (e.g., reference/SSC-EWI-XXXX.md)
   • Document the problem, fix patterns, examples, and any important considerations

Reference File Structure

Each reference file should follow this structure:

# SSC-EWI-XXXX - Brief Description

Brief explanation of what this EWI means and why it occurs.

## Quick Reference

| SQL Server | Snowflake |
|------------|-----------|
| Original syntax | Converted syntax |

## Identification

How to identify this EWI in code (markers, patterns).

## Fix Process

Step-by-step process to resolve the EWI.

## Examples

### Before
```sql
-- Invalid/unconverted code

After

-- Valid Snowflake code

Key Points

• Important considerations
• Edge cases
• Common mistakes to avoid

Resources

• Links to relevant Snowflake documentation
• Links to relevant SQL Server documentation

## Updating References

When updating an existing reference after resolving an EWI:

- Add new patterns or edge cases discovered
- Include additional examples if the fix was non-obvious
- Document any gotchas or pitfalls encountered
- Keep the file focused and well-organized