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Oracle® Database SQL Language Reference
11g Release 1 (11.1)

B28286-07
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Null Conditions

A NULL condition tests for nulls. This is the only condition that you should use to test for nulls.

null_conditions::=

Description of null_conditions.gif follows
Description of the illustration null_conditions.gif

Table 7-9 lists the null conditions.

Table 7-9 Null Conditions

Type of Condition Operation Example
IS [NOT] NULL 

Tests for nulls.

See Also: "Nulls"

SELECT last_name
  FROM employees
  WHERE commission_pct
  IS NULL
  ORDER BY last_name;