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…
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…
The result of data analysis in Tableau can be saved in various formats, to be saved and distributed. The various formats are referred as different file types and they are…
As Tableau helps in analyzing lots of data over diverse time periods, dimensions, and measures, it needs a very meticulous planning to create a good dashboard or story. Hence, it…
This section explains the Tajo DDL commands. Tajo has a built-in database named default. Create Database Statement Create Database is a statement used to create a database in Tajo. The syntax for…
The JSON functions are listed in the following table − S.No.Function & Description1json_extract_path_text(js on text, json_path text)Extracts JSON string from a JSON string based on json path specified.2json_array_get(json_array text, index…
Apache Tajo supports the following DateTime functions. S.No.Function & Description1add_days(date date or timestamp, int dayReturns date added by the given day value.2add_months(date date or timestamp, int month)Returns date added by…
The following table lists out the string functions in Tajo. S.No.Function & Description1concat(string1, ..., stringN)Concatenate the given strings.2length(string)Returns the length of the given string.3lower(string)Returns the lowercase format for the string.4upper(string)Returns…
Math functions operate on mathematical formulae. The following table describes the list of functions in detail. S.No.Function & Description1abs(x)Returns the absolute value of x.2cbrt(x)Returns the cube root of x.3ceil(x)Returns x…
The following operators are used in Tajo to perform desired operations. S.No.Operator & Description1Arithmetic operatorsPresto supports arithmetic operators such as +, −, *, /, %.2Relational operators<, >, <=, >=, =,…
A dashboard is used to represent tables or charts which are related to some business meaning. It is done through panels. The panels in a dashboard hold the chart or…