The documentation says (also in v8.5) "These symbols refer to values
supplied in the USING clause".
"values"and not "variable name or reference". This leads to the useful
feature mentioned a line later in the same page.
Once you have a value replaced you can avoid the restrictions you now
mention o
It is not the check or the select.
It is the way the substitution has been implemented. It looks like the code
replaces the variable name and not the value.
Which is different from what is written at page 800.
I only hope they won't change the manual to match the feature/bug (warning:
new joke)
Il
