The Data Dose

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Welcome to Data Dose, where I break down complex data science and analytics concepts into clear, actionable insights. What to Expect: In-depth tutorials on d...

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SQL Interview Question 🔥 Count Unique Callers Within 7 Days LAG + INTERVAL Explained

SQL Interview Question 🔥 Count Unique Callers Within 7 Days LAG + INTERVAL Explained

The Data Dose

11 views·1 week ago

SQL Challenge Highest Selling Product with Tie Breaker by Rating

SQL Challenge Highest Selling Product with Tie Breaker by Rating

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9 views·2 weeks ago

SQL Hard Problem Rank Variance Per Country Explained 🔥 Dense Rank + CTE + Window Functions

SQL Hard Problem Rank Variance Per Country Explained 🔥 Dense Rank + CTE + Window Functions

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38 views·2 weeks ago

SQL Practice Find the Category with the Highest Daily Sales % Increase Window Functions + LAG()

SQL Practice Find the Category with the Highest Daily Sales % Increase Window Functions + LAG()

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18 views·1 month ago

CHAR vs VARCHAR Which SQL Data Type is FASTER (Memory & Performance Test)

CHAR vs VARCHAR Which SQL Data Type is FASTER (Memory & Performance Test)

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29 views·6 months ago

SQL Interview Question Find Highest Daily Spenders - GROUP BY & Date Range Filtering Explained

SQL Interview Question Find Highest Daily Spenders - GROUP BY & Date Range Filtering Explained

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22 views·9 months ago

SQL Problem Multiple CASE Statements, Joins & Aggregations Explained!

SQL Problem Multiple CASE Statements, Joins & Aggregations Explained!

The Data Dose

36 views·11 months ago

SQL Problem Calculate Discount Losses by Year Using Joins & Aggregation

SQL Problem Calculate Discount Losses by Year Using Joins & Aggregation

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16 views·11 months ago

SQL Subquery & CASE Practice Insurance-Based Admission Cost Analysis

SQL Subquery & CASE Practice Insurance-Based Admission Cost Analysis

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11 views·11 months ago

SQL Query to Find a Specific Patient Based on Multiple Conditions Healthcare Data Filtering

SQL Query to Find a Specific Patient Based on Multiple Conditions Healthcare Data Filtering

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17 views·11 months ago

SQL Lag Function Explained with Real-Time Admissions Data Window Functions Tutorial

SQL Lag Function Explained with Real-Time Admissions Data Window Functions Tutorial

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8 views·11 months ago

3-Day Rolling Average of Tweets Per User – SQL Window Function Challenge

3-Day Rolling Average of Tweets Per User – SQL Window Function Challenge

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10 views·1 year ago

Top 3 Earners per Department in SQL RANK vs DENSE_RANK vs ROW_NUMBER Explained

Top 3 Earners per Department in SQL RANK vs DENSE_RANK vs ROW_NUMBER Explained

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17 views·1 year ago

SQL Query Retrieve Users and Their Product Purchases Based on Most Recent Transaction Date

SQL Query Retrieve Users and Their Product Purchases Based on Most Recent Transaction Date

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24 views·1 year ago

SQL Interview Question Sum Odd & Even Measurements

SQL Interview Question Sum Odd & Even Measurements

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7 views·1 year ago

Snapchat User Activity Analysis by Age Group Using SQL

Snapchat User Activity Analysis by Age Group Using SQL

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8 views·1 year ago

Correlation vs Covariance vs Causation Explained with Real-Life Examples

Correlation vs Covariance vs Causation Explained with Real-Life Examples

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41 views·1 year ago

Box Plots Explained Quantiles, Percentiles & 5-Number Summary Made Easy!

Box Plots Explained Quantiles, Percentiles & 5-Number Summary Made Easy!

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18 views·1 year ago

Statistics Explained Central Tendency and Dispersion Simplified

Statistics Explained Central Tendency and Dispersion Simplified

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28 views·1 year ago

Count Negative Numbers in Sorted Matrix

Count Negative Numbers in Sorted Matrix

The Data Dose

48 views·1 year ago

Double Charges How to Detect and Prevent Repeated Payment Transactions

Double Charges How to Detect and Prevent Repeated Payment Transactions

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20 views·1 year ago

Selection Sort Algorithm Explained Step-by-Step Tutorial

Selection Sort Algorithm Explained Step-by-Step Tutorial

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27 views·1 year ago

Bubble Sort Explained Simply 🔁 Sorting Algorithm for Beginners

Bubble Sort Explained Simply 🔁 Sorting Algorithm for Beginners

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16 views·1 year ago

Central Limit Theorem The Secret Weapon of Data Science Explained

Central Limit Theorem The Secret Weapon of Data Science Explained

The Data Dose

29 views·1 year ago

SQL Tutorial Calculate YoY Growth with LAG() Function Data Analyst Interview Prep

SQL Tutorial Calculate YoY Growth with LAG() Function Data Analyst Interview Prep

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40 views·1 year ago

Binary Search Algorithm Explained Visually Step-by-Step with Python Code

Binary Search Algorithm Explained Visually Step-by-Step with Python Code

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27 views·1 year ago

SQL Interview Prep Compare Department Avg Salary vs Company Avg DataLemur Problem Solved

SQL Interview Prep Compare Department Avg Salary vs Company Avg DataLemur Problem Solved

The Data Dose

50 views·1 year ago

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