Salary column value cannot be greater than 1000 : Check « Table « Oracle PL/SQL Tutorial






  1. Oracle PL/SQL Tutorial
  2. Table
  3. Check
SQL>
SQL>
SQL> create table emp(
  2    EmpNo            NUMBER(10)    PRIMARY KEY,
  3    Name             VARCHAR2(40)  NOT NULL,
  4    DeptNo           NUMBER(2)     DEFAULT NULL,
  5    Salary           NUMBER(7,2)   CHECK (salary < 1000),
  6    Birth_Date       DATE,
  7    Soc_Sec_Num      CHAR(9)       UNIQUE);

Table created.

SQL>
SQL>
SQL>
SQL>
SQL> drop table emp;

Table dropped.

SQL>
SQL>








6.13.Check
6.13.1.Create a table with check constraint
6.13.2.Adding a CHECK Constraint
6.13.3.Use comparison operators with a CHECK constraint
6.13.4.Constraint with Two conditions
6.13.5.Add condition constraint with 'and' operator
6.13.6.Check constraint with decode and nvl2
6.13.7.Check constraint with MOD function
6.13.8.A column with upper case constraint
6.13.9.check constraint: must be positive value
6.13.10.Check constraint: one column must less than another column
6.13.11.Add constraint to ensure that value from one column is bigger than that from another
6.13.12.Salary column value cannot be greater than 1000
6.13.13.Setting CHECK constraint for number type field
6.13.14.Setting the Regular expression check for varchar field
6.13.15.Use char function to build default column value
6.13.16.Use decode() function in check constraints
6.13.17.Violate a ckeck constraint
6.13.18.Must be upper case