Syntax:
mid(<source_string> <start_position>
<length>)
Return:
String. Returns the substring of
<source_string> starting from the <start_position>-th character
from the left, with length <length>.
Parameter <source_string>:
Required parameter; string type; parameter name omitted.
Parameter <start_position>:
Required parameter; integer type; parameter name omitted.
Parameter <length>:
Required parameter; integer type; parameter name omitted.
Example:
Substring starting from the 3rd character of "中国人民电视台" with length 2.
NLC snippet: mid("中国人民电视台",3,2) // result is "人民".