Post📊 Data Cleaning Cheat Sheet (SQL + Python)

📊 Data Cleaning Cheat Sheet (SQL + Python) Clean data is the foundation of accurate analysis. Master these essential techniques: 🔹 Missing Values • SQL: IS NULL, COALESCE() • Python: isnull(), fillna() 🔹 Remove Duplicates • SQL: SELECT DISTINCT • Python: drop_duplicates() 🔹 Data Formatting • Fix data types, standardize dates, trim & clean text 🔹 Outlier Detection • Use the IQR method to identify extreme values 💡 Tip: Data professionals spend most of their time cleaning data. Master this skill to improve analysis and build reliable models. 🚀