PCB布局查询功能

PCB query functions shown in the Query Helper dialog

Underlying Altium Designer's schematic and PCB editors is a powerful query engine. By entering queries into this engine, you can logically scope precisely those objects you require.

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.

The reference pages listed below detail the query language keywords available in PCB and PCB library documents in Altium Designer.

• Attribute Checks
• Fields
• Layer Checks
• Membership Checks
• Object Type Checks
• Parameters