SQL , Extracting a particular data from a column

Question

Comments

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'teacherName: Andrew Cribbs, comment: No level change chosen by the trainer' 'teacherName: Andrew Cribbs, comment: No level change chosen by the trainer' 'teacherName: Andrew Cribbs, comment: No level change chosen by the trainer'

Above is the column(Comments) which contains data, Any idea on how to extract the Name(Andrew Cribbs)

Answer 1

In Oracle can you use this script that use ":" and "," as separators:

SELECT regexp_substr(regexp_substr('teacherName: Andrew Cribbs, comment: No level change chosen by the trainer', '[^:]+', 1, 2), '[^,]+', 1, 1)
    AS teachername
  FROM dual;

Thank you