How to Clean Data with SQL - Cuardach Físeáin

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MAZHER KHAN | Data Science & Analytics - 6 years on Instagram: "Things I Wish I Knew Before Becoming a Data Analyst 📊 1. SQL > Everything Learning SQL early saves you countless hours later. Almost every company stores data in databases, and SQL helps you pull exactly what you need, whether it’s sales trends, customer data, or performance reports. 2. Clean Data > Fancy Models 70% of your time goes into cleaning and preparing messy data. Without clean data, insights are useless. 3. Business Knowl

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Javed || Senior Business Analyst on Instagram: "🗑️ Want to delete data from a SQL table but not sure how? Here’s the quick trick 👇 👉 Use DELETE FROM table_name WHERE condition; • Add WHERE to remove specific rows • Skip WHERE to delete all records (⚠️ be careful!) Examples: ✅ DELETE FROM Employees WHERE EmployeeID = 101; ✅ DELETE FROM Employees WHERE Department = ‘Sales’; 🚀 Easy way to clean your database without touching the table structure! [• How to delete data from SQL table • SQL DELETE

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Efficiently Insert Multiple Rows into SQL Tables Using Select

Efficiently Insert Multiple Rows into SQL Tables Using Select

How to Handle Duplicate Rows in SQL with Foreign Key Relationships

How to Handle Duplicate Rows in SQL with Foreign Key Relationships

Solving SQL Column Naming Conflicts in SqlAlchemy Queries

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