Query Validation: Reconciliation, Edge Cases, and Sanity Checks

Help learners understand this topic clearly, practice it on a small example, and produce reviewable evidence before moving to the next module.

Units

1. Unit 10.00: Query Validation: Reconciliation, Edge Cases, and Sanity Checks: Read the schema and identify the grain
2. Unit 10.01: Query Validation: Reconciliation, Edge Cases, and Sanity Checks: Write the query in small testable steps
3. Unit 10.02: Query Validation: Reconciliation, Edge Cases, and Sanity Checks: Check row counts, joins, filters, and nulls
4. Unit 10.03: Query Validation: Reconciliation, Edge Cases, and Sanity Checks: Explain what the query proves and does not prove
5. Unit 10.04: Query Validation: Reconciliation, Edge Cases, and Sanity Checks: Save the final SQL evidence note

Module work

• Activity
• Knowledge check
• Summary