TEXTBEFORE
Returns the text that occurs before the start of given instance of a delimiter substring.
TEXTBEFORE( Text [; Delimiter [; Instance Number [; Match Mode [; Match End [; If Not Found ]]]]])
Text: the original text.
Delimiter: (optional) the delimiter. Multiple delimiters can be supplied. If omitted or supplied as an empty string, then returns the error #N/A or the value expressed by If Not Found.
Instance Number: (optional) the instance of the delimiter before which to extract text. The default is 1. A negative number starts searching from the end. Value 0 returns the error #N/A
Match Mode: (optional) set to 1 to perform a case-insensitive match. The default is 0.
Match End: (optional) set to 1 to treat the end of text as a delimiter. The default is 0.
If Not Found: (optional) the value returned if no match is found. The default is #N/A.
Pódese omitir calquera dos argumentos opcionais. Un argumento opcional require que todos os separadores presentes estean presentes.
=TEXTBEFORE("To be or not to be";" be";2;0;0;"@@@") returns the string "To be or not to", taking up to the second instance of the delimiter " be".
=TEXTBEFORE("To be or not to be";"question";1;0;0;"@@@") returns the text "@@@" because the delimiter "question" is not in the source text.
=TEXTBEFORE("To be or not to be";"question";1;0;1;"@@@") returns the text "To be or not to be" because the delimiter "question" is not in the source text and Match End is 1, which then returns everything before the end of text.
=TEXTBEFORE("To be or not to be";"question";-1;0;1;"@@@") returns the empty string "" because the delimiter "question" is not in the source text, Instance Number is negative (starts from the end) and Match End is 1, which prevents the function to return the error #N/A or the value defined in If Not Found.
COM.MICROSOFT.TEXTBEFORE
