In SAS you can use the function FIND to check whether a string contains a combination of characters (or a single character). If this combination of characters is found, the FIND function returns the position of the first occurrence in the string. If the substring is not found, SAS returns a 0. The syntax of the function is the following:
In the example below, the FIND function checks whether a string contains the substring Ms.
data work.ds; input string $1-30; datalines; Mr. Jones and Ms. Smith Ms. Smith and Mr. Johnsen Mr. Jones and Mr. Johnsen Ms. Smith and Ms. Taylor ; run; data work.ds_find; set work.ds; string_find = find(string, 'Ms.'); run;
By default, the FIND function is case sensitive. However, you can add a third parameter to the function to ignore the character case. So:
FIND(string, substring, ‘i’)
If you want to Find & Replace a substring, you can use the TRANWRD function.
You can find the official SAS documentation about the FIND function here.