Tipe Kolom dan Constraint

Analisis Data Eksploratif di SQL

Christina Maimone

Data Scientist

Constraint kolom

Umum

Khusus

Tabel nama dan deskripsi tipe data numerik

Tabel database Fortune 500

Format

-- With the CAST function
SELECT CAST (value AS new_type);

Contoh

-- Cast 3.7 as an integer
SELECT CAST (3.7 AS integer);

-- Cast a column called total as an integer
SELECT CAST (total AS integer)
  FROM prices;

Format

-- With :: notation
SELECT value::new_type;

Contoh

-- Cast 3.7 as an integer
SELECT 3.7::integer;

-- Cast a column called total as an integer
SELECT total::integer
  FROM prices;

Analisis Data Eksploratif di SQL