What is MIN Aggregate Function in SQL?

What is MIN Aggregate Function in SQL?
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Chapters:
00:06 Introduction to MIN Function in SQL
00:10 What is the MIN Function in SQL?
00:16 Purpose of the MIN Function in SQL
00:23 MIN Function Syntax in SQL
00:32 Practical Example: Using MIN Function in SQL
00:42 Setting Up the Example Table
01:04 Finding the Minimum Value Across Repeated Entries
01:27 Grouping Data with GROUP BY Clause in SQL
01:46 Checking Data Types for Accuracy
02:34 Running the Query and Reviewing the Output
02:45 Importance of Data Types in Aggregation in SQL
03:14 Correcting Data Types with CAST Function in SQL
03:26 Re-running the Query with Correct Data Types
03:50 Comparing Outputs with and without Data Type Correction
04:20 Key Takeaways on Using MIN Function
04:30 Conclusion and Final Thoughts
We will be discussing the min function in SQL. The min function retrieves the smallest value in a column. The syntax is simple: SELECT MIN(column_name) FROM table.
To illustrate, let's consider a table where we want to find the minimum value for the "Emily" entries in the sales_name column. This entry is repeated multiple times. Using the MIN function, we can group by sales_name to find the minimum value.
However, it's crucial to check the data type of the column. If the data type is VARCHAR, the MIN function may not give the correct result. To ensure accuracy, convert the data type to INT using the CAST function, then find the minimum value. This ensures the correct minimum value is retrieved.
Always verify the data type when using aggregate functions to get accurate results. Thank you for watching Educate Cube. Please like, share, and subscribe to our channel.