“cara memilih elemen unik di SQL” Kode Jawaban

cara memilih elemen unik di SQL

DISTINCT
- select distinct * from employees; ==> 
  retrieves any row if it has at
  least a single unique column.

- select distinct first_name from employees; ==> 
      retrieves unique names
     from table. (removes duplicates)
     
- select distinct count(*) from employees;
     retrieve number of unique rows
     if any row has at least a single unique data.
Obedient Ocelot

Cara menemukan elemen unik di SQL

DISTINCT
- select distinct * from employees; ==> 
           retrieves any row if it has at 
           least a single unique column.
- select distinct first_name from employees; ==> 
              retrieves unique names
              from table. (removes duplicates)
- select distinct count(*) from employees;
          retrieve number of unique rows
          if any row has at least a single unique data.
Obedient Ocelot

Jawaban yang mirip dengan “cara memilih elemen unik di SQL”

Pertanyaan yang mirip dengan “cara memilih elemen unik di SQL”

Jelajahi jawaban kode populer menurut bahasa

Jelajahi bahasa kode lainnya