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with t as ( select * from ( values ('Иванов Максим Александрович') -- ('ПЕТРОВ ДМИТРИЙ ТИМОФЕЕВИЧ'), -- ('борисов николай родионович') )foo (name) ) select *, rpad( substring( split_part(name, ' ', 1) for 1), length(split_part(name, ' ', 1))-1 , '*') from t

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