Bagi pengguna database atau programmer, kadang kita di pusingkan data2 yang double di database kita,
Kalau datanya cuman 10 record sih tidak masalah, bagaimana kalau data anda mencapai ribuan, ratusan ribu? Atau bahkan jutaan.
Tentu akan sangat merepotkan bukan?
Ok, kira2 syntax sqlnya akan seperti ini:
Select kolom1,kolom2,count(*)
From table1 group by kolom1,kolom2
Having count(*) >1
SQL: mencari record yang double di database
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