AltiumDesigner强大的QueryLanguageReference.pdf

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TR0110 (v1.7) April 21, 2008 1

Query Language Reference

Summary

Technical Reference

TR0110 (v1.7) April 21, 2008

This reference manual describes the Query Language used in Altium Designer.

This reference details the following in Altium Designer:

• Query Helper

• Library Functions

• Schematic Functions

• PCB Functions

• System Functions.

What is a Query?

Underlying Altium Designer is a powerful data filtering and editing system that lets you instruct the software to return you a

specified set of objects. This instruction is entered in the form of a Query.

A query is a string you enter using specific keywords and syntax, which will return the targeted objects. There are many

keywords available, allowing you to target objects by their type, their properties, or both.

For help on a specific query keyword, press F1 when the cursor is in the keyword. Use the links below for more information on

the query system, operators, and tips on writing queries.

Use the Query Helper dialog for a list of keywords. To easily re-use popular queries add them to your Favorites (copy them from

the History list). Favorites can be accessed from the Favorites dialog, or by pressing the Y shortcut in the schematic or PCB

editors.

Links

Introduction to the Query Language

An Insider’s Guide to the Query Language

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Query Language Reference

4 TR0110 (v1.7) April 21, 2008

Wild Card Characters

Wild Card characters permit the provision of strings which are not exactly specified. These characters are typically used in

conjunction with other characters, resulting in the provision of strings which are partially specified. A few exceptional keywords

can accept string parameters that are not exactly specified, but for the most part, strings can only contain Wild Card characters

when these are being compared by the Like operator.

? This can be replaced by a single character of any type.

Example:

Footprint Like 'DIP1?'

This returns objects which have a Footprint property of 'DIP10', or 'DIP12', or 'DIP14', etc.

* This can be replaced by any number of characters, each of which can be of any type.

Example:

Footprint Like 'SIP*'

This returns objects which have a Footprint property of 'SIP1', or 'SIP12', or 'SIP216', etc. (Any objects having a Footprint

property of 'SIP' are also returned, because * can also be replaced by no characters.)

Boolean Strings

True This affirms the meaning of a Keyword.

Example:

IsPad = True

To be returned, an object has to be a pad.

False This negates the meaning of a Keyword.

Example:

IsVia = False

To be returned, an object has to not be a via.

Brackets and Order of Precedence

It is highly advisable to use brackets within a query whenever there is any possibility whatsoever that the query might not be

correctly interpreted.

The following two queries provide a demonstration of how brackets are used in order to eliminate ambiguity:

((IsPad And OnMultiLayer) Or IsVia) And (HoleDiameter < 16)

(IsPad And OnMultiLayer) Or (IsVia And (HoleDiameter < 16))

Both of those queries return all vias whose hole diameter is less than 16mil, but each of them differs in which pads are also

returned. The first query returns pads on the Multi-Layer layer whose hole diameter is less than 16mil, but the second query

returns all pads on the Multi-Layer layer, regardless of their hole diameters.

Brackets have the highest precedence within an order of precedence that has been defined for the various operators provided,

and which determines how queries are interpreted by the software (whenever the user has not provided brackets). The

sequence of this order is as follows:

Brackets

Not

^, *, /, Div, Mod, And

+, -, Or, Xor

=, <>, <, >, <=, >=

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Query Language Reference

TR0110 (v1.7) April 21, 2008 5

&&, ||

Ambiguities are resolved by working from left to right. Parentheses are evaluated from inside to outside and equal levels are

done left to right.

Examples:

A And B Or C becomes (A And B) Or C

A * B + C becomes (A * B) + C

This order of precedence is similar to that used in Pascal type languages. However, generous usage of brackets removes

doubt, and makes the resulting queries easier to read by others.

Library Functions

Comment Field

Description

Returns all Library Component objects having a Comment property that complies with the Query.

Note: The child objects of these Component objects are not returned. The Comment property is only defined for Component

objects.

Syntax

Comment : String

Examples

Comment = '100nF'

Returns all Components that have a Comment property of '100nF'.

Comment <> '100nF'

Returns all objects except these Component objects that have a Comment property of '100nF'. (Only Component objects have

a Comment property, thus the remaining objects that do not have a Comment property of '100nF' are returned by this Query.)

ComponentType Field

Description

Returns all Schematic Library Component objects having a ComponentType property that complies with the Query. Note, a

component type can be one of the following types; Standard, Mechanical, Graphical, Net Tie, Net Tie (In BOM), Standard (No

BOM).

Syntax

ComponentType : String

Examples

ComponentType = 'Graphical'

Returns all Part objects that have a 'Graphical' Component Type property.

ComponentType <> 'Standard'

Returns all objects except Part objects that have a 'Standard' Component Type property. (Only Part objects have a

ComponentType property, so all remaining types of objects do not have a 'Standard' ComponentType property, and are thus

also returned by this Query.)

IsPart && ComponentType <> 'Standard'

Returns all Part objects that do not have a 'Standard' Component Type property.

Designator Field

Description

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