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CREATE TABLE TheCompanyCode (A int,B int,C int,CompanyCode varchar(100),GL varchar(100)); INSERT INTO TheCompanyCode(A,B,C,CompanyCode,GL) VALUES (1, 1, 1, 'AA', 001), (1, 1, 2, 'AA', 002), (1, 1, 3, 'AA', 003), (1, 1, 4, 'AA', 004), (2, 2, 1, 'BB', 001), (2, 2, 2, 'BB', 002); SELECT * FROM TheCompanyCode; select *, row_number() over (partition by a,b,companycode) rn from TheCompanyCode;
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