Database Management
Reference Manual
Expressions
: Query Expressions
Query Expressions
All expressions may be queried. Arrays are always concatenated into a single variable. Imperial values are always output as inch to variables. This preserves maximum accuracy. To output in FINCH, then the DISTANCE function must be used. In general expression do not have to be enclosed in brackets, but to be sure that other queries are not picked up by mistake then it is advisable to do so.
Particular queries that could lead to confusion are those available both outside and inside expressions. These are:
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Q PPOINT n
•
Q POS or cartesian position
•
Q ORI or cartesian orientation
The functionality may vary between outside and inside expression queries. For example, ’Q N 100 FROM /POSS’ is not valid. It must be entered as Q N 100 FROM /POSS ).
1974 to current year.
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