Matching a column against values in code

Hello all.

I sometimes find myself needing an SQL query that will return all the
rows of a table in which one column equals any one of a list of values I
have in an array in code.

Does anyone know of a better way to do this than to loop through the
array and append an "or" comparison to the sql statement, like this?

sqlString = sqlString + " or this_column='" + arrayOfValues[i] +"' ";

If someone knows a command or function I can look up in the docs, just
say the name and I'll look there.

Thanks a lot everyone.

--
Tim