SQL Server to PostgreSQL with Python + SQL | Full Data Project |
💻 Migrate a database from SQL Server to PostgreSQL with Python + SQL, then visualize data with matplotlib.
This project covers:
ETL pipeline design (Extract, Transform, Load)
Pre-migration data quality checks
Cross-database type conversions (BIT→BOOLEAN, DATETIME→TIMESTAMP)
Bulk data loading with psycopg2
Post-migration validation (row counts, referential integrity)
Data visualization with matplotlib
…and more!
Check out the full GitHub repository here: https://github.com/sdw-online/sql-ser...
This GitHub repo contains:
Complete Jupyter notebook with all migration code
SQL scripts for both SQL Server and PostgreSQL
Data generation scripts (1M+ rows)
Pre/post-migration validation queries
Visual architecture diagrams
Follow along at your own pace - feel free to drop any questions or feedback you have in the comments below.
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🛠️ What You'll Build:
✓ Migrate over 1 million rows across 4 tables
✓ Extract data from SQL Server using pyodbc
✓ Transform data types for PostgreSQL compatibility
✓ Load data with bulk insert (100x faster than row-by-row)
✓ Validate zero data loss with SQL queries
✓ Generate visual validation reports with matplotlib
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📚 Skills You'll Learn:
Python: pandas, pyodbc, psycopg2, matplotlib
SQL: Cross-database querying, type mappings, INFORMATION_SCHEMA
Data Engineering: ETL patterns, data quality checks, migration validation
Best Practices: Bulk operations, transaction management, referential integrity
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https://data100x.carrd.co/
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This does *not* cost you anything, but helps in creating more content!)
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Twitter/X - / sdw_online
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🎁 Free Resources:
Here are some of the free resources I've created that you may find useful for your own data projects:
My articles/blogs - / sdw-online
How I broke into data - https://datapro.carrd.co/
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📩 Installation links:
How to install the tools used in this video:
1. Python + Anaconda - • How to install Anaconda on Windows 11
2. VS Code - • How to install VS Code (on Windows 11)
3. SQL Server - • SQL Server | SQL Server Management Studio ...
4. PostgreSQL - • How to install PostgreSQL on Windows 11 (p...
5. Jupyter Notebook - included with Anaconda installation
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🎶 Music used:
Morning Routine by Ghostrifter Official | / ghostrifter-official
Music promoted by https://www.chosic.com/free-music/all/
Creative Commons CC BY-SA 3.0 https://creativecommons.org/licenses/...
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⏲️ Timestamps:
Intro (00:00:00)
Tables to migrate (00:05:28)
0. Setup your environment (00:19:53)
1. Audit the data (01:10:42)
2. Extract the data (01:54:20)
3. Transform the data (02:00:32)
4. Load the data (02:21:32)
5. Validate the migration (02:45:31)
6. Visualize the data (matplotlib) (03:01:36)
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#dataengineering #python #sql #postgresql #sqlserver #etl #datamigration #pandas #database #dataproject #dataanalysis
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