Pregunta de entrevista de NSETECH
How to find duplicate elements in table
Respuesta de la entrevista
Anónimo
12 jul 2017
select column_name, count(column_name) from table group by column_name having count (column_name) > 1;
How to find duplicate elements in table
Anónimo
select column_name, count(column_name) from table group by column_name having count (column_name) > 1;