Tests if a string matches a pattern.
LIKE(source, pattern)
The string to evaluate.
The string pattern to match. You must enclose the pattern in double quotation marks (" "). The match is case-sensitive. You can use the following special characters in a pattern:
A percent character (%) matches zero or more characters. For example, %ace% matches any string value that contains the substring ace, such as Facebook, and MySpace. It does not match Ace Corporation because this string contains a capital A, and not the lowercase a.
An underscore character (_) matches exactly one character. For example, t_n matches tan, ten, tin, and ton. It does not match teen or tn.
To match a literal percent (%), underscore (_), precede those characters with two backslash (\\) characters. For example, to see if a string contains M_10, specify the following pattern:
True if the string matches the pattern; returns false otherwise.
The following example returns true for values in the customerName field that start with D:
LIKE([customerName], "D%")
The following example returns true for productCode values that contain the substring Ford:
LIKE([productCode], "%Ford%")
The following example uses two LIKE( ) expressions to look for the substrings "Ford" or "Chevy" in each ProductName value. If a product name contains either substring, the expression displays U.S. Model; otherwise, it displays Imported Model.
IF(((LIKE([ProductName], "%Ford%") = TRUE) OR (LIKE([ProductName], "%Chevy%") = TRUE)), "U.S. model", "Imported Model")

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