Aggregate Functions in Tableau - GeeksforGeeks

24 Oct, 2020
In this article, we will learn about aggregate functions, their types and uses in Tableau. 
Tableau: Tableau is a very powerful data visualization tool that can be used by data analysts, scientists, statisticians, etc. to visualize the data and get a clear opinion based on the data analysis. Tableau is very famous as it can take in data and produce the required data visualization output in a very short time.
Aggregate Function: Aggregate function can be a function where the values ​​of multiple lines are grouped together to form a single summative value. Typical integration functions include: Measurement (e.g., arithmetic means), Count, etc.
In a Tableau, you will combine steps or sizes, although it is very common to combine steps. Whenever you add a rating to your view, the aggregation is used when the rating is automated, the type of aggregation used varies by counting in viewing context. Tableau offers a variety of integrated functions, which help to make aggregations such as calculating total, average, minimum, quantity, etc. between this article, we will show you ways to use the functions of Tableau Aggregate with examples. 
The most commonly used functions in tableau are listed below:
SUM: sum of valuesAVG: average of valuesMIN: minimum of valuesMAX: maximum of valuesVAR: variance of sample populationVARP: variance of entire populationSTDEV: standard deviation of sample populationSTDEVP: standard deviation of entire populationCOUNT: count of values
SUM: sum of values
AVG: average of values
MIN: minimum of values
MAX: maximum of values
VAR: variance of sample population
VARP: variance of entire population
STDEV: standard deviation of sample population
STDEVP: standard deviation of entire population
COUNT: count of values
The Tableau Sum function is employed to seek out the Sum of records during a column. 
Syntax:
SUM(Expression)

Example:
To demonstrate these Tableau aggregate functions, we’ve to use the Calculated Field. Please navigate to Analysis Tab and choose the Create Calculated Field (choice to create a calculated field and use sum aggregate function).
The Tableau Avg or average function is used to calculate the Average. 
Syntax:
AVG(Expression)

Example:
As you’ll see from the below screenshot, we are creating a replacement field (Sales Average) using Tableau function.
The Tableau MIN function is an aggregate function in Tableau, which is employed to seek out the minimum value. 
Syntax:
MIN(Expression1, Expression2)

Example:
The Tableau MIN function accepts two arguments. Use this to find the smallest between two numbers. 
The Tableau MAX function is employed to seek out the utmost value. 
Syntax:
MAX(Expression 1, Expression 2)

Example:
In Tableau, the MAX function accepts two arguments. Use this to find the largest among two numbers.
The Tableau VAR function is an aggregate function in tableau, which is used to find the Variance of the sample population. 
Syntax:
VAR(Expression)

Example:
The Tableau VARP function is employed to seek out the Variance of the whole population. 
Syntax:
VARP(Expression)

Example:
The Tableau STDEV function is one of the aggregate functions in tableau, which is used to find the standard deviation of the sample population. 
Syntax:
STDEV(Expression)

Example:
The Tableau STDEVP function is for locating the quality deviation of the whole population. 
Syntax:
STDEVP(Expression)

Example:
The Tableau COUNT function is one of the Tableau aggregate function, which is used to find the number of not null values. 
Syntax:
COUNT(Expression)

Example:
TIP: Use COUNTD function to urge a definite count.
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