The Delimiter field within the File Format wizard can contain a regular expression. This is a special type of notation for expressing patterns using wildcards. In regular expressions the pipe (|) character represents a logical OR.
For example, if you had two files with the same field layout but one was delimited by a comma and the other a semi-colon, you would use a regular expression to define one file format to import both files by specifying a delimiter of ,|;
To use | (pipe) as a delimiter, enter an escape character before the pipe. This shows that the subsequent character should be interpreted as a literal character and not part of a regular expression. The escape character is the backslash.
Therefore to use the pipe character as a delimiter, set the delimiter field to:
\|