Xem thêm hàm DENSE_RANK dưới đây để xếp hạng trong SQL Server với nhiều cột
— Khai báo biến dữ liệu kiểu table
DECLARE @t1 table(entity char(2) NOT NULL, paymethod varchar(10) NOT NULL, [stock-type] char(4) NOT NULL)
Chèn một số dữ liệu vào bảng
INSERT @t1 (entity, paymethod, [stock-type])
SELECT ‘NA’, ‘Budget’, ‘OPEN’
UNION ALL SELECT ‘NA’, ‘Budget’, ‘OPEN’
UNION ALL SELECT ‘NA’, ‘Budget’, ‘OPEN’
UNION ALL SELECT ‘CE’, ‘XIGN’, ‘OPEN’
UNION ALL SELECT ‘CE’, ‘XIGN’, ‘OPEN’
UNION ALL SELECT ‘OB’, ‘TERMS’, ‘OPEN’
UNION ALL SELECT ‘NA’, ‘OTHER’, ‘OPEN’
UNION ALL SELECT ‘NA’, ‘OTHER’, ‘OPEN’
UNION ALL SELECT ‘NA’, ‘OTHER’, ‘OPEN’
UNION ALL SELECT ‘NA’, ‘Budget’, ‘PAID’
UNION ALL SELECT ‘NA’, ‘Budget’, ‘OPEN’
Sử dụng hàm dense_rank
SELECT entity, paymethod, [stock-type], DENSE_RANK() OVER (ORDER BY [stock-type], paymethod, entity) FROM @t1