NULL predicate

The NULL predicate tests for null values.

Use the syntax:
single-valued-path-expression IS [NOT] NULL

Example: NULL predicate

e.name IS NULL
e.dept.name IS NOT NULL
e.dept IS NOT NULL

指出主題類型的圖示 概念主題



時間戳記圖示 前次更新: July 9, 2016 11:11
http://www14.software.ibm.com/webapp/wsbroker/redirect?version=cord&product=was-nd-mp&topic=cque_null
檔名:cque_null.html