selecteer verschillend
t1. [HSE_READER_ID] + ', 'ZOALS [HSE_READER_ID],
materiaal ((selecteer „,“ + [HSE_PRIMARY_COURSE] van [Heri_Student_Courses]
waar [HSE_READER_ID] = t1. [HSE_READER_ID] voor xmlweg ('')), 1.1, '') zoals [HSE_PRIMARY_COURSE]
van [Heri_Student_Courses] als t1
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