Returns a string containing the name of the reference to the expression. If no expression is found, EXPR_REFERENCE returns an empty string. Similarly, if the reference index is out of bounds, it returns an empty string.
Format
EXPR_REFERENCE (Expression, Reference)
Argument
Expression | A character string name of a database field. |
Reference | A numeric index into the list of references to that field. |
Examples
var set var=load_dep &str=(eval(expr_reference(".mod.par.mar.loc", 1)))