May 26, 2021 Tableau
As a data analysis tool, Tableau divides each data into one of four categories - String, Number, Boolean, and datetime. /b10> Tableau automatically assigns data types after loading data from the source, but some data types can also be changed if data conversion rules are met. /b11> In addition, the user must specify the data type of the calculated field.
The types of data supported by Tableau are described as follows:
| The data type | Describe | Example |
|---|---|---|
| STRING | A sequence of any zero or more characters. /b10> They are enclosed in single quotes. /b11> The quotation marks themselves can be included in the string by writing twice. |
\'Hello\'
\'Quoted\'\'quote\' |
| NUMBER | These are integers or floats. /b10> It is recommended that floating points be rounded in calculations. |
3
142.58 |
| BOOLEAN | They are logical values. |
TRUE
FALSE |
| DATE & DATETIME | Tableau recognizes dates in almost any format. /b10> However, if we need to force tableau to recognize strings as dates, then we put a sign before the data. |
“02/01/2015"
“＃3 March 1982" |