Database Management
Reference Manual
Expressions
: Format of Expressions
Format of Expressions
The format of an expression, for example the use of brackets, spaces and quotes, is important. If you do not follow the rules given below you will get error messages:
Text must be enclosed in quotes.
‘This is text’
There must be a space between each operator and operand. For example:
x + y
Use round brackets to control the order of evaluation of expressions and to enclose the argument of a function.
SIN(30)
In general, you do not need spaces before or after brackets, except when an AVEVA E3D™ name is followed by a bracket. If there is no space, the bracket will be read as part of the name.
(NAME EQ /VESS1 )
1974 to current year.
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