Strengformatering ved hjælp af LISTAGG i Oracle. Escapende enkelt citat ` ' `

Du kan bruge:

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

eller ved at bruge ENQUOTE_LITERAL funktion:

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

DBFiddle Demo