General
The Left function can be used to extract left characters from a String.
Syntax
The syntax of the Left function is:
Left Function Syntax
Left(<value>, <length>)
Examples
The following Expression returns a String that contains the 4 left characters of the value of variable vTest of a Datasource named Consumer Sales:
Left Function Example
Left([Datasource].[Consumer Sales].[Variable].[vTest], 4)