1 row in set (0.03 sec) 1. 2. 3. 4. 5. 6. 7. 8. 您可以使用GROUP BY子句取平均各种记录集。下面的示例将平均获取与一个人相关的所有记录,并且每个人的平均输入页面数将为平均。 SQL> SELECT name, AVG(daily_typing_pages) -> FROM employee_tbl GROUP BY name; +---+---+ | name | AV...
AVG() 函數 (SQL AVG() Function) AVG() 函數用來計算一數值欄位的平均值。 AVG() 語法 (SQL AVG() Syntax) SELECT AVG(column_name) FROM table_name; AVG() 函數查詢用法 (Example) 假設我們想從下面的 students 資料表中查詢學生的平均身高: S_IdNameHeight 1 張一 170 2 王二 176 3 李三 173...
Here, the `AVG()` function calculates the average age of customers who reside in the USA, demonstrating conditional aggregation. 3. Average with Grouping sql SELECT department_id, AVG(salary) FROM employees GROUP BY department_id; Powered By This example computes the average salary for each ...
SELECT AVG(advance_amount): This is the main part of the SQL query. It uses the AVG() function to calculate the average value of the 'advance_amount' column in the 'orders' table. The result will be a single value representing the average of all values in the 'advance_amount' column....
適用於:Microsoft 報表產生器 (SSRS) Power BI Report Builder SQL Server Data Tools 中的報表設計師 在分頁報表中,傳回運算式指定的所有非 Null 數值的平均值 (在指定範圍中評估)。 注意 您可以在 Microsoft 報表產生器、Power BI Report Builder,以及 SQL Server Data Tools 的報表設計師中,建立及...
The SQL AVG function calculates the average of a series of values that you provide to it. Most of the time, this will be a particular column that you specify, so the average will be all of the values in that column. Just like theMINandMAXfunctions, the AVG function is a SQL standard...
The AVG() FunctionThe AVG() function returns the average value of a numeric column.SQL AVG() SyntaxSELECT AVG(column_name) FROM table_nameDemo DatabaseIn this tutorial we will use the well-known Northwind sample database.Below is a selection from the "Products" table:...
SQL AVG Function Summary: in this tutorial, you will learn how to use the SQL AVG aggregate function to calculate the average of a set of numbers. Introduction to SQL AVG function The AVG function calculates the average of the values. To use the AVG function, you use the following syntax...
Operands in expr can include the name of a table field, a constant, or a function (which can be either intrinsic or user-defined but not one of the other SQL aggregate functions). Remarks The average calculated by Avg is the arithmetic mean (the sum of the values divided by the number...
TheAVG()function returns the average value of a numeric column. ExampleGet your own SQL Server Find the average price of all products: SELECTAVG(Price) FROMProducts; Try it Yourself » Note:NULL values are ignored. Syntax SELECTAVG(column_name) ...