Sollicitatievraag bij OpenText
duplicate count from database
Antwoord op sollicitatievraag
Anoniem
17 nov 2020
SELECT col1, col2, COUNT(*) FROM tbl_name GROUP BY col1, col2 HAVING COUNT(*) > 1
2
duplicate count from database
Anoniem
SELECT col1, col2, COUNT(*) FROM tbl_name GROUP BY col1, col2 HAVING COUNT(*) > 1