Tableau Desktop and Web Authoring Help

ABS(-7) = 7
ABS([Budget Variance])

The second example returns the absolute value for all the numbers contained in the Budget Variance field.

ACOS(-1) = 3.14159265358979

IF [Season] = "Spring" AND "[Season] = "Fall" 
THEN "It's the apocalypse and footwear doesn't matter" 
END

"If both (Season = Spring) and (Season = Fall) are true simultaneously, then return It's the apocalypse and footwear doesn't matter."

Often used with IF and IIF. See also NOT and OR.

If both expressions are TRUE (that is, not FALSE or NULL), then the result is TRUE. If either expression is NULL, then the result is NULL. In all other cases, the result is FALSE.

If you create a calculation in which the result of an AND comparison is displayed on a worksheet, Tableau displays TRUE and FALSE. If you would like to change this, use the Format area in the format dialog.

Note: The AND operator employs short circuit evaluation. This means that if the first expression is evaluated to be FALSE, then the second expression is not evaluated at all. This can be helpful if the second expression results in an error when the first expression is FALSE, because the second expression in this case is never evaluated.

AREA([Geometry], 'feet')

Supported unit names (must be in quotation marks in the calculation, such as 'miles'):

• metres: meters, metres, m
• kilometres: kilometers, kilometres, km
• miles: miles, mi
• feet: feet, ft

ASCII('A') = 65

ASIN(1) = 1.5707963267949

ATAN(180) = 1.5652408283942

The inverse function, TAN, takes the angle in radians as the argument and returns the tangent.

See also ATAN2 and COT.

ATAN2(2, 1) = 1.10714871779409

BUFFER([Spatial Point Geometry], 25, 'mi')

BUFFER(MAKEPOINT(47.59, -122.32), 3, 'km')

Supported unit names (must be in quotation marks in the calculation, such as 'miles'):

• metres: meters, metres, m
• kilometres: kilometers, kilometres, km
• miles: miles, mi
• feet: feet, ft

Evaluates the expression and compares it to the specified options (<value1>, <value2>, etc.). When a value that matches expression is encountered, CASE returns the corresponding return. If no match is found, the (optional) default is returned. If there is no default and no values match, then Null is returned.

CASE [Season] 
WHEN 'Summer' THEN 'Sandals' 
WHEN 'Winter' THEN 'Boots' 
ELSE 'Sneakers' 
END

"Look at the Season field. If the value is Summer, then return Sandals. If the value is Winter, then return Boots. If none of the options in the calculation match what is in the Season field, return Sneakers."

See also IF and IIF.

Used with WHEN, THEN, ELSE and END.

Tip: Many times you can use a group to get the same results as a complicated CASE function, or use CASE to replace native grouping functionality, such as in the previous example. You may want to test which is more performant for your scenario.

CEILING(2.1) = 3

CEILING is available through the following connectors: Microsoft Excel, Text File, Statistical File, Published Data Source, Amazon EMR Hadoop Hive, Amazon Redshift, Cloudera Hadoop, DataStax Enterprise, Google Analytics, Google BigQuery, Hortonworks Hadoop Hive, MapR Hadoop Hive, Microsoft SQL Server, Salesforce, Spark SQL.

CHAR(65) = 'A'

CONTAINS("Calculation", "alcu") = true

example

The Pearson correlation measures the linear relationship between two variables. Results range from -1 to +1 inclusive, where 1 denotes an exact positive linear relationship, 0 denotes no linear relationship between the variance and −1 is an exact negative relationship.

The square of a CORR result is equivalent to the R-Squared value for a linear trend line model. See Trend Line Model Terms(Link opens in a new window).

Use with table-scoped LOD expressions:

You can use CORR to visualise correlation in a disaggregated scatter using a table-scoped level of detail expression(Link opens in a new window). For example:

{CORR(Sales, Profit)}

With a level of detail expression, the correlation is run over all rows. If you used a formula like CORR(Sales, Profit) (without the surrounding brackets to make it a level of detail expression), the view would show the correlation of each individual point in the scatter plot with each other point, which is undefined.

CORR is available with the following data sources: Tableau data extracts, Cloudera Hive, EXASolution, Firebird (version 3.0 and later), Google BigQuery, Hortonworks Hadoop Hive, IBM PDA (Netezza), Oracle, PostgreSQL, Presto, SybaseIQ, Teradata, Vertica.

For other data sources, consider either extracting the data or using WINDOW_CORR. See Table Calculation Functions(Link opens in a new window).

The number argument is the angle in radians.

COS(PI( ) /4) = 0.707106781186548

The inverse function, ACOS, takes the cosine as the argument and returns the angle in radians.

See also PI.

The number argument is the angle in radians.

COT(PI( ) /4) = 1

Covariance quantifies how two variables change together. A positive covariance indicates that the variables tend to move in the same direction, as when larger values of one variable tend to correspond to larger values of the other variable, on average. Sample covariance uses the number of non-null data points n-1 to normalise the covariance calculation, rather than n, which is used by the population covariance (available with the COVARP function). Sample covariance is the appropriate choice when the data is a random sample that is being used to estimate the covariance for a larger population.

If <expression1> and <expression2> are the same, for example COVAR([profit], [profit]), COVAR returns a value that indicates how widely values are distributed.

The value of COVAR(X, X) is equivalent to the value of VAR(X) and also to the value of STDEV(X)^2.

COVAR is available with the following data sources: Tableau data extracts, Cloudera Hive, EXASolution, Firebird (version 3.0 and later), Google BigQuery, Hortonworks Hadoop Hive, IBM PDA (Netezza), Oracle, PostgreSQL, Presto, SybaseIQ, Teradata, Vertica.

For other data sources, consider either extracting the data or using WINDOW_COVAR. See Table Calculation Functions(Link opens in a new window).

Covariance quantifies how two variables change together. A positive covariance indicates that the variables tend to move in the same direction, as when larger values of one variable tend to correspond to larger values of the other variable, on average. Population covariance is sample covariance multiplied by (n-1)/n, where n is the total number of non-null data points. Population covariance is the appropriate choice when there is data available for all items of interest as opposed to when there is only a random subset of items, in which case sample covariance (with the COVAR function) is appropriate.

If <expression1> and <expression2> are the same, for example COVARP([profit], [profit]), COVARP returns a value that indicates how widely values are distributed. Note: The value of COVARP(X, X) is equivalent to the value of VARP(X) and also to the value of STDEVP(X)^2.

COVARP is available with the following data sources: Tableau data extracts, Cloudera Hive, EXASolution, Firebird (version 3.0 and later), Google BigQuery, Hortonworks Hadoop Hive, IBM PDA (Netezza), Oracle, PostgreSQL, Presto, SybaseIQ, Teradata, Vertica

For other data sources, consider either extracting the data or using WINDOW_COVAR. See Table Calculation Functions(Link opens in a new window).

DATE([Employee Start Date])

DATE("September 22, 2018") 

DATE("9/22/2018")

DATE(#2018-09-22 14:52#)

Unlike DATEPARSE, there is no need to provide a pattern as DATE automatically recognises many standard date formats. If DATE does not recognise the input, however, try using DATEPARSE and specifying the format.

MAKEDATE is another similar function, but MAKEDATE requires the input of numeric values for year, month and day.

Push out all due dates by one week

DATEADD('week', 1, [due date])

Add 280 days to the date February 20, 2021

DATEADD('day', 280, #2/20/21#) = #November 27, 2021#

Number of days between 25th March 1986 and 20th February 2021

DATEDIFF('day', #3/25/1986#, #2/20/2021#) = 12,751

How many months someone was in a band

DATEDIFF('month', [date joined band], [date left band])

DATENAME('year', #3/25/1986#) = "1986"

DATENAME('month', #1986-03-25#) = "March"

Supports ISO 8601 dates.

A very similar calculation is DATEPART, which returns the value of the specified date part as a continuous integer. DATEPART can be faster because it is a numerical operation.

By changing the attributes of the calculation’s result (dimension or measure, continuous or discrete) and the date formatting, the results of DATEPART and DATENAME can be formatted to be identical.

An inverse function is DATEPARSE, which takes a string value and formats it as a date.

DATEPARSE('yyyy-MM-dd', "1986-03-25") = #March 25, 1986#

DATE is a similar function that automatically recognises many standard date formats. DATEPARSE may be a better option if DATE does not recognise the input pattern.

MAKEDATE is another similar function, but MAKEDATE requires the input of numeric values for year, month and day.

Inverse functions, which take dates apart and return the value of their parts, are DATEPART (integer output) and DATENAME (string output).

DATEPARSE is available through the following connectors: non-legacy Excel and text file connections, Amazon EMR Hadoop Hive, Cloudera Hadoop, Google Sheets, Hortonworks Hadoop Hive, MapR Hadoop Hive, MySQL, Oracle, PostgreSQL and Tableau extracts. Some formats may not be available for all connections.

DATEPARSE is not supported on Hive variants. Only Denodo, Drill and Snowflake are supported.

DATEPART('year', #1986-03-25#) = 1986

DATEPART('month', #1986-03-25#) = 3

Supports ISO 8601 dates.

A very similar calculation is DATENAME, which returns the name of the specified date part as a discrete string. DATEPART can be faster because it is a numerical operation. By changing the attributes of the field (dimension or measure, continuous or discrete) and the date formatting, the results of DATEPART and DATENAME can be formatted to be identical.

An inverse function is DATEPARSE, which takes a string value and formats it as a date.

DATETIME("April 15, 2005 07:59:00") = April 15, 2005 07:59:00

DATETRUNC('day', #9/22/2018#) = #9/22/2018#

DATETRUNC('iso-week', #9/22/2018#) = #9/17/2018#

(the Monday of the week containing 22/09/2018)

DATETRUNC(quarter, #9/22/2018#) = #7/1/2018# 

(the first day of the quarter containing 22/09/2018)

Note: For week and iso-week, the start_of_week comes into play. ISO-weeks always start on Monday. For the locale of this example, an unspecified start_of_week means the week starts on Sunday.

Supports ISO 8601 dates.

You shouldn't use DATETRUNC to, for example, stop showing the time for a datetime field in a viz. If you want to truncate the display of a date rather than round its accuracy, adjust the formatting(Link opens in a new window).

For example, DATETRUNC('day', #5/17/2022 3:12:48 PM#), if formatted in the viz to display seconds, would display as 5/17/2022 12:00:00 AM.

Day(#September 22, 2018#) = 22

The number argument is the angle in radians.

DEGREES(PI( )/4) = 45.0

The inverse function, RADIANS, takes an angle in degrees and returns the angle in radians.

See also PI().

DISTANCE([Origin Point],[Destination Point], 'km')

Supported unit names (must be in quotation marks in the calculation):

• metres: meters, metres, m
• kilometres: kilometers, kilometres, km
• miles: miles, mi
• feet: feet, ft

DIV(11,2) = 5

IF [Season] = "Summer" THEN 'Sandals' 
ELSEIF [Season] = "Winter" THEN 'Boots' 
ELSE 'Sneakers' 
END

CASE [Season] 
WHEN 'Summer' THEN 'Sandals' 
WHEN 'Winter' THEN 'Boots' 
ELSE 'Sneakers' 
END

Used with CASE, WHEN, IF, ELSEIF, THEN and END

ELSE is optional with CASE and IF. In a calculation where ELSE is not specified, if none of the <test> are true, the overall calculation will return null.

ELSE does not require a condition (such as [Season] = "Winter") and can be thought of as a form of null handling.

IF [Season] = "Summer" THEN 'Sandals' 
ELSEIF [Season] = "Winter" THEN 'Boots' 
ELSEIF [Season] = "Spring" THEN 'Sneakers' 
ELSEIF [Season] = "Autumn" THEN 'Sneakers'
ELSE 'Bare feet' 
END

Used with IF, THEN, ELSE and END

ELSEIF can be thought of as additional IF clauses. ELSEIF is optional and can be repeated multiple times.

Unlike ELSE, ELSEIF requires a condition (such as [Season] = "Winter").

IF [Season] = "Summer" THEN 'Sandals' 
						ELSEIF [Season] = "Winter" THEN 'Boots' 
ELSE 'Sneakers' 
END

"If Season = Summer, then return Sandals. If not, look at the next expression. If Season = Winter, then return Boots. If neither of the expressions are true, return Sneakers."

CASE [Season] 
WHEN 'Summer' THEN 'Sandals' 
WHEN 'Winter' THEN 'Boots' 
ELSE 'Sneakers' 
END

"Look at the Season field. If the value is Summer, then return Sandals. If the value is Winter, then return Boots. If none of the options in the calculation match what is in the Season field, return Sneakers."

Used with CASE, WHEN, IF, ELSEIF, THEN and ELSE.

ENDSWITH("Tableau", "leau") = true

EXP(2) = 7.389
EXP(-[Growth Rate]*[Time])

Returns the index position of <substring> in <string>, or 0 if the substring isn't found. The first character in the string is position 1.

If the optional numeric argument start is added, the function ignores any instances of the substring that appear before the starting position.

FIND("Calculation", "alcu") = 2

FIND("Calculation", "Computer") = 0

FIND("Calculation", "a", 3) = 7

FIND("Calculation", "a", 2) = 2

FIND("Calculation", "a", 8) = 0

FINDNTH("Calculation", "a", 2) = 7

FINDNTH is not available for all data sources.

See also the supported RegEx in the additional functions documentation(Link opens in a new window).

FLOAT(3) = 3.000

FLOOR(7.9) = 7

FLOOR is available through the following connectors: Microsoft Excel, Text File, Statistical File, Published Data Source, Amazon EMR Hadoop Hive, Cloudera Hadoop, DataStax Enterprise, Google Analytics, Google BigQuery, Hortonworks Hadoop Hive, MapR Hadoop Hive, Microsoft SQL Server, Salesforce, Spark SQL.

Returns the full name for the current user.

FULLNAME( )

This returns the full name of the signed-in user, such as "Hamlin Myrer".

[Manager] = FULLNAME( )

If manager "Hamlin Myrer" is signed in, this example returns TRUE only if the Manager field in the view contains "Hamlin Myrer".

This function checks:

• Tableau Cloud and Tableau Server: the full name of the signed-in user
• Tableau Desktop: the local or network full name for the user

User filters

When used as a filter, a calculated field such as [Username field] = FULLNAME( ) can be used to create a user filter that only shows data that is relevant to the person signed in to the server.

HEXBINX([Longitude]*2.5, [Latitude]*2.5)

HEXBINY([Longitude]*2.5, [Latitude]*2.5)

Tests a series of expressions and returns the <then> value for the first true <test>.

IF [Season] = "Summer" THEN 'Sandals' 
ELSEIF [Season] = "Winter" THEN 'Boots' 
ELSE 'Sneakers' 
END

"If Season = Summer, then return Sandals. If not, look at the next expression. If Season = Winter, then return Boots. If neither of the expressions are true, return Sneakers."

See also IF and IIF.

Used with ELSEIF, THEN, ELSE and END

Returns <expr1> if it's non-null, otherwise returns <expr2>.

IFNULL([Assigned Room], "TBD")

"If the Assigned Room field isn't null, return its value. If the Assigned room field is null, return TBD instead."

Compare with ISNULL. IFNULL always returns a value. ISNULL returns a boolean (true or false).

See also ZN.

IIF([Season] = 'Summer', 'Sandals', 'Other footwear')

"If Season = Summer, then return Sandals. If not, return Other footwear"

IIF([Season] = 'Summer', 'Sandals', 
   IIF('Season' = 'Winter', 'Boots',  'Other footwear')
)

"If Season = Summer, then return Sandals. If not, look at the next expression. If Season = Winter, then return Boots. If neither are true, return Sneakers."

IIF('Season' = 'Summer', 'Sandals', 
   IIF('Season' = 'Winter', 'Boots',  
      IIF('Season' = 'Spring', 'Sneakers', 'Other footwear')
   )
)

"If Season = Summer, then return Sandals. If not, look at the next expression. If Season = Winter, then return Boots. If none of the expressions are true, return Sneakers."

See also IF andCASE.

IIF doesn't have an equivalent to ELSEIF (like IF) or repeated WHEN clauses (like CASE). Instead, multiple tests can be evaluated sequentially by nesting IIF statements as the <unknown> element. The first (outermost) true is returned.

That is to say, in the calculation below, the result will be Red, not Orange, because the expression stops being evaluated as soon as A=A is evaluated as true:

IIF('A' = 'A', 'Red', IIF('B' = 'B', 'Orange', IIF('C' = 'D', 'Yellow', 'Green')))

SUM([Cost]) IN (1000, 15, 200)

"Is the value of the Cost field 1000, 15 or 200?"

[Field] IN [Set]

"Is the value of the field present in the set?"

The values in <expr2> can be a set, list of literal values or combined field.

See also WHEN.

INT(8/3) = 2

INT(-9.7) = -9

When a string is converted to an integer it is first converted to a float and then rounded.

See also FLOAT, which returns a decimal.
See also ROUND, CEILING and FLOOR

ISDATE(09/22/2018) = true

ISDATE(22SEP18) = false

Returns TRUE if the current user's full name matches the specified full name or FALSE if it does not match.

ISFULLNAME("Hamlin Myrer")

The <"User Full Name"> argument must be a literal string, not a field.

This function checks:

• Tableau Cloud and Tableau Server: the full name of the signed-in user
• Tableau Desktop: the local or network full name for the user

Returns TRUE if the person currently using Tableau is a member of a group that matches the given string, FALSE if they're not a member and NULL if they're not signed in.

ISMEMBEROF('Superstars')

ISMEMBEROF('domain.lan\Sales')

The <"Group Full Name"> argument must be a literal string, not a field.

If the user is signed in to Tableau Cloud or Tableau Server, group membership is determined by Tableau groups. The function will return TRUE if the given string is "All Users"

The ISMEMBEROF( ) function will also accept Active Directory domains. The Active Directory domain must be declared in the calculation with the group name.

Returns true if the <expression> is NULL (does not contain valid data).

ISNULL([Assigned Room])

"Is the Assigned Room field null?"

Compare with IFNULL. IFNULL always returns a value. ISNULL returns a boolean.

See also ZN.

ISOQUARTER(#1986-03-25#) = 1

ISOWEEK(#1986-03-25#) = 13

ISOWEEKDAY(#1986-03-25#) = 2

ISOYEAR(#1986-03-25#) = 1,986

ISUSERNAME("hmyrer")

The <"username"> argument must be a literal string, not a field.

This function checks:

• Tableau Cloud and Tableau Server: the username of the signed-in user
• Tableau Desktop: the local or network username for the user

LEFT("Matador", 4) = "Mata"

LEN("Matador") = 7

LENGTH([Spatial], 'metres')

The result is <NaN> if the geometry argument has no linestrings, though other elements are permitted.

Not to be confused with the string function LEN.

Number

The output is Null if the argument is less than or equal to zero.

LN(50) = 3.912023005

If the optional base argument isn't present, base 10 is used.

LOG(16,4) = 2

LOWER("ProductVersion") = "productversion"

LTRIM(" Matador ") = "Matador "

MAKEDATE(1986,3,25) = #1986-03-25#

Note: Incorrectly entered values will be adjusted into a date, such as MAKEDATE(2020,4,31) = May 1, 2020 rather than returning an error that there is no 31st day of April.

Available for Tableau Data Extracts. Check for availability in other data sources.

MAKEDATE requires numerical inputs for the parts of a date. If your data is a string that should be a date, try the DATE function. DATE automatically recognises many standard date formats. If DATE does not recognise the input, try using DATEPARSE.

MAKEDATETIME("1899-12-30", #07:59:00#) = #12/30/1899 7:59:00 AM#

MAKEDATETIME([Date], [Time]) = #1/1/2001 6:00:00 AM#

This function is available only for MySQL-compatible connections (which for Tableau are MySQL and Amazon Aurora).

MAKETIME is a similar function available for Tableau Data Extracts and some other data sources.

MAKELINE(MAKEPOINT(47.59, -122.32), MAKEPOINT(48.5, -123.1))

Converts data from <latitude> and <longitude> columns into spatial objects.

If the optional <SRID> argument is added, the inputs can be other projected geographic coordinates.

MAKEPOINT(48.5, -123.1)

MAKEPOINT([AirportLatitude], [AirportLongitude])

MAKEPOINT([Xcoord],[Ycoord], 3493)

MAKEPOINT can't use the automatically generated latitude and longitude fields. The data source must contain the coordinates natively.

SRID is a spatial reference identifier that uses ESPG reference system codes(Link opens in a new window) to specify coordinate systems. If SRID is not specified, WGS84 is assumed and parameters are treated as latitude/longitude in degrees.

You can use MAKEPOINT to spatially enable a data source so that it can be joined with a spatial file using a spatial join. For more information, see Join Spatial Files in Tableau(Link opens in a new window).

MAKETIME(14, 52, 40) = #1/1/1899 14:52:40#

Because Tableau does not support a time data type, only datetime, the output is a datetime. The date portion of the field will be 1/1/1899.

Similar function to MAKEDATETIME, which is only available for MYSQL-compatible connections.

Returns the maximum of the two arguments, which must be of the same data type.

MAX can also be applied to a single field as an aggregation.

MAX(4,7) = 7
MAX(#3/25/1986#, #2/20/2021#) = #2/20/2021# 
MAX([Name]) = "Zander"

For strings

MAX is usually the value that comes last in alphabetical order.

For database data sources, the MAX string value is highest in the sort sequence defined by the database for that column.

For dates

For dates, the MAX is the most recent date. If MAX is an aggregation, the result will not have a date hierarchy. If MAX is a comparison, the result will retain the date hierarchy.

As an aggregation

MAX(expression) is an aggregate function and returns a single aggregated result. This displays as AGG(expression) in the viz.

As a comparison

MAX(expr1, expr2) compares the two values and returns a row-level value.

See also MIN.

MEDIAN is not available for the following data sources: Access, Amazon Redshift, Cloudera Hadoop, HP Vertica, IBM DB2, IBM PDA (Netezza), Microsoft SQL Server, MySQL, SAP HANA, Teradata.

For other data source types, you can extract your data into an extract file to use this function. See Extract Your Data(Link opens in a new window).

Returns a string starting at the specified <start> position. The first character in the string is position 1.

If the optional numeric argument <length> is added, the returned string includes only that number of characters.

MID("Calculation", 2) = "alculation"

MID("Calculation", 2, 5) ="alcul"

Returns the minimum of the two arguments, which must be of the same data type.

MIN can also be applied to a single field as an aggregation.

MIN(4,7) = 4
MIN(#3/25/1986#, #2/20/2021#) = #3/25/1986#
MIN([Name]) = "Abebi"

For strings

MIN is usually the value that comes first in alphabetical order.

For database data sources, the MIN string value is lowest in the sort sequence defined by the database for that column.

For dates

For dates, the MIN is the earliest date. If MIN is an aggregation, the result will not have a date hierarchy. If MIN is a comparison, the result will retain the date hierarchy.

As an aggregation

MIN(expression) is an aggregate function and returns a single aggregated result. This displays as AGG(expression) in the viz.

As a comparison

MIN(expr1, expr2) compares the two values and returns a row-level value.

See also MAX.

MODEL_PERCENTILE( SUM([Sales]),COUNT([Orders]))

MODEL_QUANTILE(0.5, SUM([Sales]), COUNT([Orders]))

MONTH(#1986-03-25#) = 3

IF NOT [Season] = "Summer" 
THEN 'Don't wear sandals' 
ELSE 'Wear sandals' 
END

"If Season doesn't equal Summer, then return Don't wear sandals. If not, return Wear sandals."

Often used with IF and IIF. See also The Tableau functions in this reference are organised alphabetically. Click a letter to jump to that location in the list. You can also use Ctrl+F (Command-F on a Mac) to open a search box to look for a specific function. and OR.

NOW() = 1986-03-25 1:08:21 PM

NOW does not take an argument.

See also TODAY, a similar calculation that returns a date instead of a datetime.

If the data source is a live connection, the system date and time could be in another time zone. For more information on how to address this, see the Knowledge Base.

IF [Season] = "Spring" OR [Season] = "Fall" 
THEN "Sneakers" 
END

"If either (Season = Spring) or (Season = Fall) is true, then return Sneakers."

Often used with IF and IIF. See also The Tableau functions in this reference are organised alphabetically. Click a letter to jump to that location in the list. You can also use Ctrl+F (Command-F on a Mac) to open a search box to look for a specific function. and NOT.

If either expression is TRUE, then the result is TRUE. If both expressions are FALSE, then the result is FALSE. If both expressions are NULL, then the result is NULL.

If you create a calculation which displays the result of an OR comparison on a worksheet, Tableau displays TRUEand FALSE. If you would like to change this, use the Format area in the format dialog.

Note: The OR operator employs short circuit evaluation. This means that if the first expression is evaluated to be TRUE, then the second expression is not evaluated at all. This can be helpful if the second expression results in an error when the first expression is TRUE, because the second expression in this case is never evaluated.

Useful for creating a separate layer for an outline that can be styled differently than the fill.

Supports polygons within multipolygons.

PERCENTILE([Score], 0.9)

This function is available for the following data sources: Non-legacy Microsoft Excel and Text File connections, Extracts and extract-only data source types (for example, Google Analytics, OData or Salesforce), Sybase IQ 15.1 and later data sources, Oracle 10 and later data sources, Cloudera Hive and Hortonworks Hadoop Hive data sources, EXASolution 4.2 and later data sources.

For other data source types, you can extract your data into an extract file to use this function. See Extract Your Data(Link opens in a new window).

PI() = 3.14159

POWER(5,3) = 125
POWER([Temperature], 2)

See also EXP, LOG and SQUARE.

Returns the provided <string> with the first letter of each word capitalised and the remaining letters in lowercase.

PROPER("PRODUCT name") = "Product Name"

PROPER("darcy-mae") = "Darcy-Mae"

Spaces and non-alphanumeric characters such as punctuation are treated as separators.

See also LOWER and UPPER.

QUARTER(#1986-03-25#) = 1

RADIANS(180) = 3.14159

REPLACE("Version 3.8", "3.8", "4x") = "Version 4x"

RIGHT("Calculation", 4) = "tion"

Rounds the <number> to a specified number of digits.

The optional decimals argument specifies how many decimal points of precision to include in the final result. If decimals is omitted, number is rounded to the nearest integer.

ROUND(1/3, 2) = 0.33

Some databases, such as SQL Server, allow specification of a negative length, where -1 rounds number to the tens place, -2 rounds to the hundreds place and so on. This is not true of all databases. For example, it is not true of Excel or Access.

Tip: Because ROUND may run into issues due to the underlying floating point representation of numbers – such as 9.405 rounding to 9.40 – it may be preferable to format the number to the desired number of decimal points rather than rounding. Formatting 9.405 to two decimal places will yield the expected 9.41.

See also CEILING and FLOOR.

RTRIM(" Calculation ") = " Calculation"

SHAPETYPE(MAKEPOINT(48.5, -123.1)) = "Point"

SIGN(AVG(Profit)) = -1

SIN(0) = 1.0
SIN(PI( )/4) = 0.707106781186548

The inverse function, ASIN, takes the sine as the argument and returns the angle in radians.

See also PI. To convert an angle from degrees to radians, use RADIANS.

SPACE(2) = "  "

SPLIT ("a-b-c-d", "-", 2) = "b"

SPLIT ("a|b|c|d", "|", -2) = "c"

The string is interpreted as an alternating sequence of delimiters and tokens. So for the string abc-defgh-i-jkl, where the delimiter character is '-', the tokens are (1) abc, (2) defgh, (3) i and (4) jlk.

SPLIT returns the token corresponding to the token number. When the token number is positive, tokens are counted starting from the left end of the string; when the token number is negative, tokens are counted starting from the right.

See also supported RegEX in the additional functions documentation(Link opens in a new window).

The split and custom split commands are available for the following data sources types: Tableau data extracts, Microsoft Excel, Text File, PDF File, Salesforce, OData, Microsoft Azure Market Place, Google Analytics, Vertica, Oracle, MySQL, PostgreSQL, Teradata, Amazon Redshift, Aster Data, Google Big Query, Cloudera Hadoop Hive, Hortonworks Hive and Microsoft SQL Server.

Some data sources impose limits on splitting strings. See SPLIT function limitations later in this topic.

SQRT(25) = 5

SQUARE(5) = 25

STARTSWITH("Matador, "Ma") = TRUE

STR([ID])

The <number> argument is the angle in radians.

TAN(PI ( )/4) = 1.0

IF [Season] = "Summer" THEN 'Sandals' 
ELSEIF [Season] = "Winter" THEN 'Boots' 
ELSE 'Sneakers' 
END

"If Season = Summer, then return Sandals. If not, look at the next expression. If Season = Winter, then return Boots. If neither of the expressions are true, return Sneakers."

CASE [Season] 
WHEN 'Summer' THEN 'Sandals' 
WHEN 'Winter' THEN 'Boots' 
ELSE 'Sneakers' 
END

"Look at the Season field. If the value is Summer, then return Sandals. If the value is Winter, then return Boots. If none of the options in the calculation match what is in the Season field, return Sneakers."

Used with CASE, WHEN, IF, ELSEIF, THEN, ELSE and END

TODAY() = 1986-03-25

TODAY does not take an argument.

See also NOW, a similar calculation that returns a datetime instead of a date.

If the data source is a live connection, the system date could be in another time zone. For more information on how to address this, see the Knowledge Base.

TRIM(" Calculation ") = "Calculation"

UPPER("Calculation") = "CALCULATION"

This function checks:

• Tableau Cloud and Tableau Server: the user domain of the signed-in user
• Tableau Desktop: the local domain if the user is on a domain

USERNAME( )

This returns the username of the signed-in user, such as "hmyrer".

[Manager] = USERNAME( )

If manager "hmyrer" is signed in, this example returns TRUE only if the Manager field in the view contains "hmyrer".

This function checks:

• Tableau Cloud and Tableau Server: the username of the signed-in user
• Tableau Desktop: the local or network username for the user

User filters

When used as a filter, a calculated field such as [Username field] = USERNAME( ) can be used to create a user filter that only shows data that is relevant to the person signed in to the server.

WEEK(#1986-03-25#) = 13

CASE [Season] 
WHEN 'Summer' THEN 'Sandals' 
WHEN 'Winter' THEN 'Boots' 
ELSE 'Sneakers' 
END

"Look at the Season field. If the value is Summer, then return Sandals. If the value is Winter, then return Boots. If none of the options in the calculation match what is in the Season field, return Sneakers."

Used with CASE, THEN, ELSE and END.

CASE also supports WHEN IN construction, such as:

CASE <expression> 
WHEN IN <set1> THEN <then1> 
WHEN IN <combinedfield> THEN <then2> 
... 
ELSE <default> 
END

The values that WHEN IN compare to must be a set, list of literal values or combined field. See also IN.

YEAR(#1986-03-25#) = 1,986

ZN([Test Grade])

"If the test grade isn't null, return its value. If the test grade is null, return 0."

ZN is a specialised case of IFNULL where the alternative if the expression is null is always 0 rather than being specified in the calculation.

ZN is especially useful when performing additional calculations, and a null would render the entire calculation null. However, use caution interpreting these results as null is not always synonymous with 0 and could represent missing data.

See also ISNULL.