Strängformatering med LISTAGG i Oracle. Escapende enstaka citattecken ` ' `

Du kan använda:

SELECT LISTAGG('''' || student_name || '''',',') 
       WITHIN GROUP (ORDER BY student_name)
FROM students;

eller med ENQUOTE_LITERAL funktion:

SELECT LISTAGG(DBMS_ASSERT.ENQUOTE_LITERAL(student_name),',') 
       WITHIN GROUP (ORDER BY student_name) AS r
FROM students;

DBFiddle Demo