null

null

(nu:l', nul) adj.

1. having no effect.

2. containing no information or data.

3. missing.

4. (of a character value) containing no characters.

5. (of a C function) not returning a value.

n.

6. a control character represented by a binary 0 byte value. Null characters are used in some data to indicate the end of a value.

7. a missing value, especially in SQL.

null statement

n.

a SAS statement that contains no terms. In a data step, a null statement represents the absence of an action. Elsewhere in a SAS program, a null statement has no effect.