Get or print out the row number of a current row in the result-set of a query.
current-row [ to [ define ] <current row> ]
clause, current-row will print out the current row number. First row is numbered 1. With "to"
clause, the row number is stored into variable <current row>, which is created if "define"
is used. current-row must be within a run-query
loop, and it always refers to the most inner one.
Display row number before a line with first and last name for each employee:
run-query @mydb="select firstName, lastName from employee"
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