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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)
ParametersTwo
string values separated by a comma. substring-before checks
that the first string contains the second string.
ReturnsA
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.
ExampleThe
following expression returns 2005:
substring-before("2005/04/01","/")
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