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Checks
that a given string contains the characters of a second given string
and returns the part of the first string that precedes the occurrence
of the second string.
Syntax
substring-before(string, string)
Parameters
Two
string values separated by a comma.
substring-before
checks
that the first string contains the second string.
Returns
A
string that contains the characters from the first parameter that
precede the occurrence of the second parameter in the first parameter.
If the first parameter does not include the characters from the
second parameter,
substring-before
returns an empty
string.
Example
The
following expression returns
2005
:
substring-before("2005/04/01","/")
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