Tableau provides various Aggregate Functions, which helps you to perform aggregations such as: calculating sum, avg, minimum, maximum etc. In this article we will show you, How to use Tableau Aggregate Functions with examples.
To demonstrate these Tableau Aggregate Functions, we are going to use the data source that we created in our previous article. So, Please visit Data Labels in Tableau Reports article.
Tableau Aggregate Functions
The following examples will show you the list of Aggregate Functions in Tableau
Tableau Sum Function
The Tableau Sum function is used to find the Sum of records in a column. The basic syntax of this Tableau Sum Function is as shown below:
SUM(Expression)
To demonstrate these aggregate functions, we have to use Calculated Field. In order to create a calculated field, please navigate to Analysis Tab and select the Create Calculated Field… option as shown below.
Once you click on the Create Calculated Field… option, following window will be opened. Here, we renamed the default calculation name as Sum_Of_Sales.
As you can see from the below screenshot, while I was typing, Tableau calculation window is showing the suggestions.
For the demo purpose, we will calculate the Sum of Sales amount. By clicking the OK button, a new field called Sum_Of_Sales will be created. And the final Code is
SUM([SalesAmount])
Now you can see our newly created calculated filed
Let me create a Bar Chart by dragging Country to Columns Shelf, Sum_Of_Sales (new calculated field) to Rows shelf, and Country to Colors shelf.
Tableau Avg Function
The Tableau Avg or average function is used to calculate the Average. Syntax of this Tableau AVG Function is as shown below:
AVG(Expression)
As you can see from the below screenshot, we are creating a new field (Sales Average).
AVG([SalesAmount])
Click OK to close the window
Let me replace the Sum of Sales field in Rows shelf with this Sales Average field.
Tableau MIN Function
The Tableau MIN function is used to find the minimum value. Syntax of this Tableau MIN Function is as shown below:
MIN(Expression)
As you can see from the below screenshot, we are creating a new field called Minimum Sales.
MIN([SalesAmount])
Let me place the Minimum Sales field in Rows shelf, and Color dimension in Columns Shelf.
In Tableau, MIN function accepts two arguments. Use this to find the smallest between two numbers. Syntax is:
MIN(Expression1, Expression2)
Here, we created a new field Minimum_Sales_Cost to find the smallest value between the Sales Amount and Total Product Cost.
Let me add Minimum Sales_Cost, Sales Amount and Total Product Cost to the chart
Tableau MAX Function
The Tableau MAX function is used to find the maximum value. Syntax of this Tableau MAX is as shown below:
MAX(Expression)
You can see from the screenshot, we are creating a new field called Maximum Sales.
MAX([SalesAmount])
Let me replace the Minimum Sales field in Rows shelf with Maximum Sales field.
In Tableau, MAX function accepts two arguments. Use this to find the largest among two numbers. Syntax is:
MAX(Expression 1, Expression 2)
Here, we created a new field Maximum_Sales_By_Cost to find the largest value among the Sales Amount and Total Product Cost.
Let me add Maximum Sales_By_Cost, Sales Amount and Total Product Cost to the chart
Tableau VAR Function
The Tableau VAR function is used to find the Variance of sample population. Syntax of this Tableau VAR is as shown below:
VAR(Expression)
As you can see from the below screenshot, we are creating a new field called Sales_Variance.
VAR([SalesAmount])
Click OK to close the window
Tableau VARP Function
The Tableau VARP function is used to find the Variance of entire population. Syntax :
VARP(Expression)
Let me create a new field called Sales_PVariance.
VARP([SalesAmount])
Click OK to close the window
Let me add those two variances to the column chart
Tableau STDEV Function
The Tableau STDEV function is used to find the standard deviation of sample population. Syntax of this Tableau STDEV is as shown below:
STDEV(Expression)
As you can see from the below screenshot, we are creating a new field called Sales_StdDeviation.
STDEV([SalesAmount])
Click OK to close the window
Tableau STDEVP Function
The Tableau STDEVP function is for finding standard deviation of entire population. Syntax of this Tableau STDEVP is:
STDEVP(Expression)
Let me create a new field called Sales_StdDeviationP.
STDEVP([SalesAmount])
Let me add those two standard deviations to the column chart
Tableau COUNT Function
The Tableau COUNT function is used to find number of not null values. Syntax of this Tableau COUNT is as shown below:
COUNT(Expression)
As you can see from the below screenshot, we are creating a new field called Count_Orders.
COUNT([OrderQuantity])
Click OK to close the window
TIP: Use COUNTD function to get the distinct count.
Let me add this to Row Field
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