LEFTReturns a substring from the beginning of a specified string.
string – The string from which the left portion will be returned.
number_of_characters – [ OPTIONAL – 1 by default ] – The number of characters to return from the left side of string.
0 is a valid input for number_of_characters and will cause LEFT to return the empty string.
SUBSTITUTE: Replaces existing text with new text in a string.
SPLIT: Divides text around a specified character or string, and puts each fragment into a separate cell in the row.
RIGHT: Returns a substring from the end of a specified string.
MID: Returns a segment of a string.