A conversion expression is any function that evaluates to a valid processing code (conversion).
iconv(str.exp, conv.exp) oconv(str.exp, conv.exp)
The statement below prints the system time using the mth AQL processing code as a literal string.
print oconv(time(),'mth')
The conversion expression is the AQL d (date) processing code stored as a string in the variable, conv.exp.
conv.exp = 'd2-' d = oconv(date(),conv.exp)
preci= '2' scale = '4' money = oconv(income,'mr':preci:scale)
The conversion expression is the compound string expression:
'mr':preci:scale
that results in the string, "mr24".