Fix issue when a query uses a CTE with a table alias and DJ fails to …

[shangyian]

Summary

This fixes an issue when a query uses a CTE with a table alias and DJ fails to resolve column types:

WITH monthly_totals AS (
    SELECT region, SUM(amount) AS total FROM orders GROUP BY region
)
SELECT m.region, m.total
FROM monthly_totals m  -- aliased as 'm'

results in

Error: Cannot resolve type of column m.region

This is because when inlining a CTE as a subquery, the table alias from the FROM clause is not preserved. The CTE is inlined with its original name (monthly_totals) instead of the alias (m), causing column references like m.region to fail resolution.

The fix is to modify bake_ctes() to preserve the table alias when swapping a CTE reference.

Test Plan

• PR has an associated issue: #
• make check passes
• make test shows 100% unit test coverage

Deployment Plan

[netlify]

✅ Deploy Preview for thriving-cassata-78ae72 canceled.

Name	Link
🔨 Latest commit	f265a3a
🔍 Latest deploy log	https://app.netlify.com/projects/thriving-cassata-78ae72/deploys/69798f3dc6ac850008a7bbea