 
update pal_MSClaimDoctor
set doctorPCNSNumber = ''
where doctorPCNSNumber = '4/12' or doctorPCNSNumber = 'christelle@theshoulderpractice.co.za'

update pal_Account
set referringDocNo = ''
where referringDocNo = '4/12' or referringDocNo = 'christelle@theshoulderpractice.co.za'

