Constraint check with in function : Constraint Check « Constraints « Oracle PL / SQL






  1. Oracle PL / SQL
  2. Constraints
  3. Constraint Check

Constraint check with in function

  

SQL>
SQL>
SQL> CREATE TABLE suppliers
  2  (  supplier_id     numeric(4),
  3     supplier_name   varchar2(50)
  4  );

Table created.

SQL>
SQL> ALTER TABLE suppliers
  2  add CONSTRAINT check_supplier_name
  3     CHECK (supplier_name IN ('A', 'B', 'C'));

Table altered.

SQL>
SQL> ALTER TABLE suppliers
  2  enable CONSTRAINT check_supplier_name;

Table altered.

SQL>
SQL>
SQL>
SQL> ALTER TABLE suppliers
  2  disable CONSTRAINT check_supplier_name;

Table altered.

SQL>
SQL>
SQL> ALTER TABLE suppliers
  2  drop CONSTRAINT check_supplier_name;

Table altered.

SQL>
SQL> drop table suppliers;

Table dropped.

SQL>








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