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Comment: Published by Scroll Versions from space DEV and version next

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D code

derive type:single value:MULTIPLY(3,2) as:'six'

Metadata variables

D s lang
 supports the use of variable references to aspects of the source data or dataset. In the following example, the ABS function is applied to each column in a set of them using the $col reference. 

D code

set col: val1,val2 value: ABS($col)

$col returns the value of the current row. For more information on these variables, see Source Metadata References.

Nested expressions

Individual parameters within a function can be computed expressions themselves. These nested expressions can be calculated using constants, other functions, and column references.

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