AVG DISTINCT
DISTINCTDISTINCT 指定AVG 只在每個值的唯一一個執行個體上執行，不論該 ...,Syntax. AVG ( [ DISTINCT | ALL ] expression ). The DISTINCT qualifier eliminates duplicates. The ALL qualifier retains duplicates. ALL is the default value if ... , SELECT col2, AVG(col1) FROM table GROUP BY col2.,您可以使用AVG()函数中的DISTINCT运算符来计算不同值的平均值。 例如，如果您有一组值 1 , 1 , 2 , 3 ，具有 DISTINCT 操作的AVG()函数将返回不同值的和， ... , AVG([distinct] expr). 求平均值. COUNT(*|[distinct] } expr). 统计行的数量. MAX([distinct] expr). 求最大值. MIN([distinct] expr). 求最小值., DISTINCT DISTINCT 只能指定一個欄位去除重複的值。 ... SELECT ProductID, AVG(OrderQty) AS AverageQuantity, SUM(LineTotal) AS Total., Try this: SELECT AVG(T.col2) FROM (SELECT DISTINCT col1, col2 FROM yourtable) as T., You can try to use AVG aggregate function with group by. SELECT Start,End,AVG(Time) Avg FROM T GROUP BY Start,End.,DISTINCT instructs the AVG() function to operate only on unique values. expression is a valid expression that returns a numeric value. The AVG() function ignores ... ,SELECT AVG(DISTINCT cost) AS "Average Cost" FROM products WHERE category = 'Clothing';. If there were two cost values of $25, only one of these values ...
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 AVG DISTINCT 相關參考資料
AVG (Transact-SQL) - Microsoft Docs
DISTINCTDISTINCT 指定AVG 只在每個值的唯一一個執行個體上執行，不論該 ... https://docs.microsoft.com AVG function
Syntax. AVG ( [ DISTINCT | ALL ] expression ). The DISTINCT qualifier eliminates duplicates. The ALL qualifier retains duplicates. ALL is the default value if ... https://docs.oracle.com MYSQL - Using AVG() and DISTINCT together - Stack Overflow
SELECT col2, AVG(col1) FROM table GROUP BY col2. https://stackoverflow.com MySQL avg()函数- MySQL教程™ - 易百教程
您可以使用AVG()函数中的DISTINCT运算符来计算不同值的平均值。 例如，如果您有一组值 1 , 1 , 2 , 3 ，具有 DISTINCT 操作的AVG()函数将返回不同值的和， ... https://www.yiibai.com MySQL最常用分组聚合函数- GeaoZhang - 博客园
AVG([distinct] expr). 求平均值. COUNT(*|[distinct] } expr). 统计行的数量. MAX([distinct] expr). 求最大值. MIN([distinct] expr). 求最小值. https://www.cnblogs.com SQL DISTINCT GROUP BY 觀念| 我，傑夫。開發人
DISTINCT DISTINCT 只能指定一個欄位去除重複的值。 ... SELECT ProductID, AVG(OrderQty) AS AverageQuantity, SUM(LineTotal) AS Total. https://jeffprogrammer.wordpre sql select average from distinct column of table - Stack Overflow
Try this: SELECT AVG(T.col2) FROM (SELECT DISTINCT col1, col2 FROM yourtable) as T. https://stackoverflow.com SQL Select average from results of DISTINCT rows - Stack ...
You can try to use AVG aggregate function with group by. SELECT Start,End,AVG(Time) Avg FROM T GROUP BY Start,End. https://stackoverflow.com SQL Server AVG() Function By Practical Examples
DISTINCT instructs the AVG() function to operate only on unique values. expression is a valid expression that returns a numeric value. The AVG() function ignores ... https://www.sqlservertutorial. SQL: AVG Function - TechOnTheNet
SELECT AVG(DISTINCT cost) AS "Average Cost" FROM products WHERE category = 'Clothing';. If there were two cost values of $25, only one of these values ... https://www.techonthenet.com |