Tableau data types

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Tableau - Data Types
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Tableau - Data Types
As a data analysis tool, Tableau classifies every
piece of data into one of the four
categories namely - String Number Boolean and
datetime. Once data is loaded from the source,
Tableau automatically assigns the data
types. Contrarily, you can also change some of
the data types if it satisfies the data
conversion rule. The user has to specify the
data type for calculated fields.
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STRING
String functions allow you to manipulate string
data (i.e. data made of text). For example,
you might have a field that contains all of your
customers' first and last names. You can pull
the last names from all your customers into a
new field using a string function. Example-
'Hello' 'Quote
d' 'quote'
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NUMBER
Number functions allow you to perform
computations on the data values in your
fields. Number functions can only be use d with
fields that contain numerical values. For more
information, see Data Types. For example,
you might have a field that contains values for
the variance in your budget, titled Budget
Variance. Example- 3/142.58
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BOOLEAN
In Tableau, Boolean is either True or False. It
can only be one of those values. In some
software a tri-state data type True, False,
Null can sometimes be mistakenly referred to as
boolean, for example a SQL bit data type. In
terms of performance, Boolean is as good as it
gets. Example- TRUE/FALSE
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DATE DATETIME

• Tableau recognizes dates in almost all formats.
• But in case we need to force Tableau to recognize
  a string as date, then we put a sign before
  the data.
• Example-

"02/01
15"/"3 March 1982"
/20
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Topics for next Post
Tableau - Data Terminology Tableau - Operators
Tableau - Functions Stay Tuned with