CREATE TABLE tab(NR VARCHAR(100), GRD VARCHAR(100), DT DATE);
INSERT INTO tab
SELECT '00000000000000000001' AS NR, N'06' AS GRD, DATE '2013-01-01' AS DT UNION ALL
SELECT '00000000000000000001' ,N'06', DATE '2013-01-01' UNION ALL
SELECT '00000000000000000001' ,N'21', DATE '2013-01-01' UNION ALL
SELECT '00000000000000000002' ,N'06', DATE '2013-01-01' UNION ALL
SELECT '00000000000000000002' ,N'21', DATE '2013-01-01' UNION ALL
SELECT '00000000000000000004' ,N'01', DATE '2013-03-31';
SELECT NR, ARRAY_AGG(GRD) AS grds
FROM tab
GROUP BY NR
| nr | grds |
|---|---|
| 00000000000000000001 | {06,06,21} |
| 00000000000000000002 | {06,21} |
| 00000000000000000004 | {01} |
| … | |