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Descriptor test
CREATE TABLE person12 ( id integer, first_name VARCHAR(30), last_name VARCHAR(30), las_name VARCHAR(50), descriptor VARCHAR(100) ); INSERT INTO person12 VALUES ('1', 'Ivan', 'Ivanov', 'Ivanovich', null); INSERT INTO person12 VALUES ('2', 'Ivana', 'Ivanova', null, null); INSERT INTO person12 VALUES ('3', 'Ivans', null, 'Ivanovichs', null); INSERT INTO person12 VALUES ('3', null, null, 'Ivanovichs', null); update person12 set descriptor = TRIM(both ' ' from concat(last_name, ' ', first_name, ' ', las_name)); select * from person12
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