HP StorageWorks Reference Information Storage System V1.5 User Guide (T3559-96045, November 2008)

Boolean operators must be surrounded by one or more separators, typica lly white spa ce. For example,

the query peas&&carrots is not equivalent to the query peas && carrots; peas&&carrots is a

single word (& isawordcharacter).

Negation operators (- and !) are exceptions to this rule. They must be preceded by a separator, but they

need not be followed by a separator. For example, carrot-a6 is a single query word, but carrot

-a6,likecarrot (- a6), is equivalent to the Boolean expression carrot AND (NOTa6).

Nested Boolean query expressions

You can nest Boolean query expressions using Boole an expressions as arguments of Boolean expressions.

To do this, enclose the nested expression in parentheses (()). For example, the following query searches

for documents containing bird,butnotgarden or stone:

bird AND (NOT (garden OR stone))

You must prov

ide the same number of opening p arentheses as closing pa rentheses and they must be

properly nes

ted or an error message results. For example, the following queries result in an error message.

• bird AND (NOT (garden OR stone): Missing right parenthesis at the end

• bird AND) NOT (garden OR stone(): Improperly nested parentheses

For clarity

, always use parentheses for nested query expressions.

Query expression examples

The following are examples of query expressions.

Query expression syntax and matching