It could be even more precise as:
('bank_account.numbers.number', 'like', '____' + number)
_ is the SQL wildcard for any one char (and % is the wildcard for any number of char)
It could be even more precise as:
('bank_account.numbers.number', 'like', '____' + number)
_ is the SQL wildcard for any one char (and % is the wildcard for any number of char)