Statements used to group in mysql

The statement used for grouping in MySQL is GROUP BY. It summarizes data by grouping by specified columns and performing aggregate functions (such as SUM, COUNT, AVG) on each group.

Group statement in MySQL: GROUP BY

Question: Used for grouping in MySQL What is the statement of?

Answer: GROUP BY

Detailed description:

The GROUP BY statement is used to group data by specified columns, and then Perform aggregate functions (such as SUM, COUNT, AVG) for each group.

Syntax:

<code class="sql">SELECT aggregate_function(column_name)
FROM table_name
GROUP BY column_name;</code>

Where:

• aggregate_function: The aggregation to be performed function.
• column_name: Specify the column used for grouping.
• table_name: The name of the table to be grouped.

Usage:

The GROUP BY statement can be used with multiple aggregate functions, for example:

<code class="sql">SELECT SUM(sales), COUNT(*)
FROM orders
GROUP BY product_id;</code>

The query will follow ## The #product_id column sums the sales column and calculates the quantity sold for each product.

Example:

The following example queries sales data, groups by product type and calculates the total sales of each group:

<code class="sql">SELECT product_type, SUM(sales) AS total_sales
FROM sales_data
GROUP BY product_type;</code>

The output may be as follows ：

product_typetotal_sales##ElectronicsClothingHome Goods

10000
5000
2000

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