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CREATE TABLE products (`id` int, `id_dlry` varchar(8)) ; INSERT INTO products (`id`, `id_dlry`) VALUES (0, '12345.67'), (1, '12345-68'), (2, '12345'), (3, '12345-67') ;
select id, id_dlry from (select id, id_dlry, count(*) over(partition by replace(id_dlry, '.', '-')) cnt from products) t where cnt > 1;
id
id_dlry
0
12345.67
3
12345-67