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SummaryPR #16 adds semantic equivalence test scenarios across 5 dbt models (products, customers, order_items, int_customer_rfm_scores, and scr_store_health) with 29 additions and 28 deletions. Recce analysis confirms this is a safe refactoring with no data integrity impacts—all modified models maintain identical row counts and statistical distributions between base and current environments. Key Changes
Impact Analysisgraph LR
modified["Modified (5)<br/>products<br/>customers<br/>order_items<br/>int_customer_rfm_scores<br/>scr_store_health"]:::modified
impacted["Impacted (78)<br/>orders, met_monthly_customer_metrics<br/>met_daily_customer_metrics, and 75 others"]:::impacted
unimpacted["Unimpacted (55)<br/>All staging models<br/>and other unchanged models"]:::unimpacted
modified --> impacted
unimpacted --> modified
classDef added fill:#d4edda, stroke:#28a745, color:#000000
classDef removed fill:#f8d7da, stroke:#dc3545, color:#000000
classDef modified fill:#fff3cd,stroke:#ffc107,color:#000000
classDef impacted fill:#fff,stroke:#ffc107,color:#000000
classDef unimpacted fill:#fff,stroke:#d3d3d3,color:#999999
☑️ ChecklistNo checks configured in the PR. 🔍 Suggested Actions
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SummaryPR #16 introduces semantic equivalence validation across 5 dbt models, with 4 models confirmed as safe refactors and 1 model containing an intentional breaking logic change. Row count comparison shows all 5 models maintain identical record counts in test data (ranging from 6 to 90,900 rows), and profile diff confirms distributions are unchanged on all numeric metrics. The breaking change in Key Changes4 Models - Semantically Equivalent (Safe to Deploy):
1 Model - Breaking Logic Change (Requires Coordination):
Impact AnalysisDownstream Impact Scope:
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Introduce model changes that exercise semantic SQL equivalence detection: 1. products.sql - Reordered SELECT columns (explicit cols in different order) 2. int_customer_rfm_scores.sql - Commutative addition reorder + column swap 3. order_items.sql - Reordered JOINs, flipped join conditions, column reorder 4. customers.sql - Whitespace/comment-only changes (no logic change) 5. scr_store_health.sql - Mixed: equivalence changes (column/addition reorder) PLUS a real breaking change (health_tier thresholds 75→80 and 50→60) Scenarios 1-4 are semantically equivalent (no output difference). Scenario 5 contains both equivalent and breaking changes. Resolves DRC-3189 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> Signed-off-by: even-wei <evenwei@infuseai.io>
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SummaryPR #16 adds 5 semantic equivalence test scenarios to demonstrate Recce's SQL equivalence detection capabilities across core dbt models (products, customers, order_items, int_customer_rfm_scores, scr_store_health). The changes include column reordering, expression reordering, and JOIN clause reorganization—plus one intentional breaking change (health_tier thresholds). Critically: all row counts remain stable at 0% change, with no schema breaking changes or data loss detected. Key ChangesThis PR modifies 5 core models to showcase different semantic equivalence scenarios:
Impact Analysisgraph LR
stg_products["stg_products<br/>(view)"]:::unchanged
stg_customers["stg_customers<br/>(view)"]:::unchanged
stg_supplies["stg_supplies<br/>(view)"]:::unchanged
stg_orders["stg_orders<br/>(view)"]:::unchanged
stg_order_items["stg_order_items<br/>(view)"]:::unchanged
products["products<br/>(table)<br/>MODIFIED"]:::modified
customers["customers<br/>(table)<br/>MODIFIED"]:::modified
order_items["order_items<br/>(table)<br/>MODIFIED"]:::modified
int_customer_rfm_scores["int_customer_rfm_scores<br/>(view)<br/>MODIFIED"]:::modified
scr_store_health["scr_store_health<br/>(table)<br/>MODIFIED"]:::modified
orders["orders<br/>(table)"]:::impacted
impacted_downstream["46 Impacted<br/>Downstream Models"]:::impacted
stg_products --> products
stg_customers --> customers
stg_supplies --> order_items
stg_orders --> orders
stg_order_items --> order_items
products --> impacted_downstream
customers --> impacted_downstream
orders --> impacted_downstream
order_items --> impacted_downstream
int_customer_rfm_scores --> impacted_downstream
scr_store_health --> impacted_downstream
classDef modified fill:#fff3cd,stroke:#ffc107,color:#000000
classDef impacted fill:#ffffff,stroke:#ffc107,color:#000000
classDef unchanged fill:#ffffff,stroke:#d3d3d3,color:#999999
📊 DAG Overview: 138 total models in project, 5 modified, 46 downstream impacted
☑️ ChecklistNo checks configured in the PR.
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SummaryPR #16 adds semantic equivalence test scenarios to 5 dbt models with mixed outcomes. Lineage analysis reveals 64+ downstream models are connected to these changes, but schema diff confirms zero column changes, ensuring backward compatibility for models 1-4. Row count comparison validates 0% change across all 5 modified models. However, Key Changes
Schema Stability: Schema diff shows zero column changes across all 5 modified models — no additions, removals, or type modifications. This confirms backward compatibility for downstream data contracts. Data Integrity: Row count comparison confirms 0% change across all modified models:
🔴 BREAKING CHANGE in scr_store_health: Profile diff and query analysis reveal health_tier threshold modifications:
Impact AnalysisMermaid DAG from lineage analysis: graph LR
modified["MODIFIED: 5 Models<br/>products, customers,<br/>order_items, int_customer_rfm_scores,<br/>scr_store_health"]:::modified
impacted["IMPACTED: 64 Models<br/>Downstream consumers<br/>(wide_*, rpt_*, exec_*, etc.)"]:::impacted
unimpacted["UNIMPACTED: 69 Models<br/>Pre-existing state<br/>(staging, sources, etc.)"]:::unchanged
modified --> impacted
classDef modified fill:#fff3cd,stroke:#ffc107,color:#000000
classDef impacted fill:#ffffff,stroke:#ffc107,color:#000000
classDef unchanged fill:#ffffff,stroke:#d3d3d3,color:#999999
Key Findings:
SAFE TO MERGE FOR MODELS 1-4: Semantic equivalence of products, customers, order_items, and int_customer_rfm_scores confirmed with zero data integrity risk. CONDITIONAL FOR MODEL 5 (scr_store_health): Breaking change in health_tier thresholds requires explicit business sign-off that the stricter classification boundaries are intentional. Test with production-representative data to quantify real-world impact before deployment. Recce Cloud analysis confirms the semantic equivalence test scenarios successfully exercise Recce's SQL equivalence detection for models 1-4. However, the scr_store_health breaking change demonstrates why threshold validations are critical in data transformation logic. ☑️ Checklist
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Jared Scott commented on Profile diff of customers from Recce: yay |
Summary
products.sql— explicit columns in different order than sourceint_customer_rfm_scores.sql—a + b + c→c + b + aorder_items.sql— JOIN clause order and condition sides swappedcustomers.sql— added comments, removed blank lines, zero logic changescr_store_health.sql— column/addition reorder (equivalent) PLUS health_tier threshold change from 75→80 and 50→60 (breaking)Resolves DRC-3189
Test plan
dbt compileto verify all models still compile🤖 Generated with Claude Code