SQL & Relational Database Design: The Hands-On Practice Workbook
Schema Architecture, Complex Queries, Window Functions, and Performance Optimization for Analysts & Engineers
Most SQL tutorials and introductory books suffer from the exact same fatal flaw: they teach syntax using disconnected, three-row toy tables. In production, relational databases are heavily normalized and massive—where a careless join silently doubles revenue rows or a non-SARGable predicate triggers a full sequential scan across millions of records.
Engineered around three coherent enterprise relational schemas—Apex Retail Operations, Metro Health Clinical Systems, and Vanguard Freight & Logistics—this 146-page large-format workbook builds permanent muscle memory across 30 structured topics, 60 hands-on drills, and a 100% verified ANSI SQL:2016 answer key.
Why This Workbook Outperforms Passive SQL Textbooks
Zero disconnected toy tables, zero hand-waving, and deterministic execution tracing on every topic.
The 4-Page Standardized Cadence
Every topic follows a strict 4-page modular sequence: Page 1 Core Mechanics & Relational Invariants, Page 2 Annotated Enterprise SQL & Trace, Page 3 Guided Fill-in Practice, and Page 4 Unassisted Production Challenge.
Three Enterprise Production Schemas
All 60 exercises run against three 3NF schemas: apex_retail (e-commerce orders & inventory), metro_health (synthetic ambulatory encounters), and vanguard_freight (intermodal waybills & delay telemetry).
6-Stage Logical Execution Pipeline
Eliminate alias scope errors, three-valued logic (NULL) traps, and asymmetric join fan-out by tracing queries in true engine order: FROM → WHERE → GROUP BY → HAVING → SELECT → ORDER BY.
Window Framing & B-Tree Tuning
Go far beyond basic queries: master ROWS vs RANGE window frames, recursive CTE hierarchy traversals, composite B-Tree leftmost prefix rules, and refactoring non-SARGable predicates with EXPLAIN ANALYZE.
30 Topics Across 6 Engineering Modules + Full Answer Key
Structured from relational algebra and 3NF schema modeling to analytical window framing and query plan optimization.
Relational Schema Architecture, Normalization & Execution Order
Entity-Relationship mapping, associative M:N junction tables, candidate/surrogate keys, referential actions (RESTRICT vs CASCADE), and systematic decomposition through 1NF, 2NF, and 3NF.
The 6-stage database execution pipeline, column projection & COALESCE, three-valued predicate logic (IS DISTINCT FROM), deterministic keyset pagination, and CASE WHEN conditional transforms.
Multi-Table Relational Algebra, Grouping Sets & Recursive CTEs
Inner joins, preserving outer join asymmetry (ON vs WHERE placement), full outer join gap reconciliation, Cartesian cross joins, and hierarchical self-joins.
Vector aggregations & nullable arithmetic, HAVING partition filters, multidimensional ROLLUP, CUBE & GROUPING SETS, correlated EXISTS vs NOT IN, and recursive CTE trees.
Analytical Window Framing, B-Tree Indexing & Query Plan Tuning
The anatomy of OVER(PARTITION BY ... ORDER BY ...), ranking algorithms (ROW_NUMBER, RANK, DENSE_RANK, NTILE), LEAD/LAG offsets, ROWS vs RANGE framing, and cohort retention.
B-Tree architecture & index-only scans, composite index leftmost prefix rules, reading EXPLAIN ANALYZE cost trees, SARGability predicate refactoring, and ACID isolation levels (G1, P2, A3).
The SQL Enterprise Schemas Starter Kit & Execution Order Desk Card
Every DDL schema definition, synthetic seed dataset, reference verification query, and printable execution-order quick reference from the workbook—packaged for immediate execution in PostgreSQL, SQLite, DuckDB, MySQL, and Snowflake.
Spin Up All 3 Enterprise Practice Databases in 60 Seconds
Enter your analyst or engineering email below to immediately download the runnable SQL schema & seed package.
Apex Retail Operations Schema (.sql)
Complete 3NF DDL and seed rows for customers, products, orders, order_items, and inventory with composite uniqueness and check constraints.
Metro Health Clinical Schema (.sql)
100% synthetic outpatient healthcare schema (departments, providers, patients, encounters, diagnoses) for practicing audit-safe clinical analytics.
Vanguard Freight Logistics Schema (.sql)
Global intermodal supply chain schema (carriers, warehouses, shipments, waybills, tracking_events) for temporal lead/lag and transit telemetry drills.
Modules 1–6 Verification Queries (.sql)
Runnable benchmark solutions demonstrating fan-out-safe left joins, correlated EXISTS probes, ROWS BETWEEN window frames, and SARGable timestamp predicates.
ANSI SQL Execution Order Desk Card (PDF)
Printable US-Letter reference matrix detailing the 6-stage query pipeline, SARGable B-Tree index transformations, ROWS vs RANGE framing, and ACID isolation levels.
Team Training & Cohort Licensing Tiers
Equip your data analytics, BI, or backend engineering cohort with physical lay-flat practice workbooks, internal team PDF rights, and interview grading rubrics.
Analytics Team Practice Pack
Designed for analytics engineering pods and BI teams standardizing SQL code review and query performance discipline.
Enterprise Engineering Cohort Suite
Built for data organizations running internal SQL bootcamps, technical interview loops, and production query tuning standards.
Official Trademark & Synthetic Data Notice (Decision 27 Compliant):
ANSI® and ISO® are registered trademarks of the American National Standards Institute and the International Organization for Standardization. PostgreSQL®, MySQL®, Oracle®, Snowflake®, and Microsoft® SQL Server® are registered trademarks of their respective owners. This independent technical workbook is published by Precision Technical Press and is not affiliated with, sponsored by, or endorsed by ANSI, ISO, or any database software vendor. All enterprise schemas (apex_retail, metro_health, vanguard_freight), clinical encounters, and shipment manifests are 100% synthetic educational datasets.