Maximize Data Analytics with SQL Aggregation Techniques

SQL can be used to aggregate data.Here are some common SQL commands:

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COUNT() - used to count the number of rows that match a specified condition

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SUM() - used to calculate the sum of a numeric column

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AVG() - used to calculate the average value of a numeric column

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MAX() - used to find the maximum value of a column.

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MIN() - used to find the minimum value of a column

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GROUP BY - used to group rows based on a specific column or set of columns.

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HAVING - used to filter the results of a GROUP BY query based on a condition.

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Dealing with Data Ambiguity: A Comprehensive Guide to SQL NULL Values

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