UofT-DSI | SQL - Assignment 1#1
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sumitgiri87 wants to merge 123 commits intosumitgiri87:assignment-onefrom
Open
UofT-DSI | SQL - Assignment 1#1sumitgiri87 wants to merge 123 commits intosumitgiri87:assignment-onefrom
sumitgiri87 wants to merge 123 commits intosumitgiri87:assignment-onefrom
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module specific setup file
Dc3 changes
Sql autorunner
Change branch filtering
Fix path extraction
Comments fix
# Conflicts: # .github/workflows/sql_assignment_runner.yml # tests/test_assignment.py
Sql autorunner
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What changes are you trying to make? (e.g. Adding or removing code, refactoring existing code, adding reports)
I have added the logical data model (Assignment_1_logical_data_model) for two connected tables (
customerandcustomer_purchases) in the farmersmarket.db dataset, along with a SQL script (assignment1.sql) containing solutions for SELECT, WHERE, CASE, JOIN, AGGREGATE, TEMP TABLE, and DATE queries as outlined in the assignment.What did you learn from the changes you have made?
I learned how to explore a SQLite database schema, identify table relationships, and create an ERD that visually represents a one-to-many relationship. I also reinforced my understanding of SQL syntax for filtering, joining, aggregation, conditional expressions, and date functions.
Was there another approach you were thinking about making? If so, what approach(es) were you thinking of?
I considered diagramming
vendorandvendor_booth_assignments, but decidedcustomerandcustomer_purchaseswere more intuitive for demonstrating relationships and query logic.Were there any challenges? If so, what issue(s) did you face? How did you overcome it?
The main challenge was identifying relationships without explicit foreign key constraints. I overcame this by examining column names and sample data in DB Browser for SQLite. Another challenge was remembering that SQLite’s STRFTIME function returns strings, which required adjusting my WHERE filters accordingly.
How were these changes tested?
I ran all SQL queries in DB Browser for SQLite against the farmersmarket.db file to ensure they returned correct results. I verified the ERD by cross-checking the relationship in the database schema and sample data.
A reference to a related issue in your repository (if applicable)
N/A
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