Data Cleaning in SQL in 30 Seconds | Remove Duplicates, NULLs, Formats & More!
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YouTubeTechE
Data Cleaning in SQL in 30 Seconds | Remove Duplicates, NULLs, Formats & More!
Learn Data Cleaning in SQL with 8 essential steps every analyst and backend developer must know! In this quick SQL tutorial, you’ll see how to: 1️⃣ Remove duplicates 2️⃣ Trim whitespaces 3️⃣ Filter invalid values 4️⃣ Standardize date formats 5️⃣ Handle NULL values 6️⃣ Fix inconsistent casing 7️⃣ Remove invalid ...
1.3K views5 months ago
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Comment “clean” for my full YouTube tutorial of 7 data cleaning functions in SQL & AI you CAN’T miss for your interviews! Data cleaning will be 80% of your job even though it isn’t glamorous. Save these 5 tips to clean data in SQL: Cleaning strings: remove random quotes, spaces, and inconsistent casing Fixing dates: convert datetimes, standardize formats, remove random characters Recoding & standardizing variables: turn “CA” “California” and “calif” into one standard value. Replacing NULLs: beca
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