Basic examples
| SubField(S, ';' ,2) | Returns 'cde' if S is 'abc;cde;efg'. |
| SubField(S, ';' ,1) | Returns an empty string if S is an empty string. |
| SubField(S, ';' ,1) | Returns an empty string if S is ';'. |
Suppose you have a variable that holds a path name vMyPath, Set vMyPath=\Users\ext_jrb\Documents\Qlik\Sense\Apps;. | In a text & image chart, you can add a measure such as:
SubField(vMyPath, '\',-3), which results in 'Qlik', because it is the substring third from the right-hand end of the variable vMyPath. |
Script example 1
Load script
Load the following script expressions and data in the data load editor.
FullName: LOAD * inline [ Name 'Dave Owen' 'Joe Tem' ]; SepNames: Load Name, SubField(Name, ' ',1) as FirstName, SubField(Name, ' ',-1) as Surname Resident FullName; Drop Table FullName;
Create a visualization
Create a table visualization in a Qlik Sense sheet with Name, FirstName, and SurName as dimensions.
Result
| Name | FirstName | SurName |
|---|
| Dave Owen | Dave | Owen |
| Joe Tem | Joe | Tem |
Explanation
The SubField() function extracts the first substring of Name by setting the field_no argument to 1. Since the value of field_no is positive, a left to right order is followed for extracting the subtring. A second function call extracts the second substring by setting the field_no argument to -1, which extracts the substring following a right to left order.
Script example 2
Load script
Load the following script expressions and data in the data load editor.
LOAD DISTINCT Instrument, SubField(Player,',') as Player, SubField(Project,',') as Project; Load * inline [ Instrument|Player|Project Guitar|Neil,Mike|Music,Video Guitar|Neil|Music,OST Synth|Neil,Jen|Music,Video,OST Synth|Jo|Music Guitar|Neil,Mike|Music,OST ] (delimiter is '|');
Create a visualization
Create a table visualization in a Qlik Sense sheet with Instrument, Player, and Project as dimensions.
Result
| Instrument | Player | Project |
|---|
| Guitar | Mike | Music |
| Guitar | Mike | Video |
| Guitar | Mike | OST |
| Guitar | Neil | Music |
| Guitar | Neil | Video |
| Guitar | Neil | OST |
| Synth | Jen | Music |
| Synth | Jen | Video |
| Synth | Jen | OST |
| Synth | Jo | Music |
| Synth | Neil | Music |
| Synth | Neil | Video |
| Synth | Neil | OST |
Explanation
This example shows how using multiple instances of the Subfield() function, each with the field_no parameter left out, from within the same LOAD statement creates Cartesian products of all combinations. The DISTINCT option is used to avoid creating duplicate records.
