Re: What's wrong in this pltcl function ?

On Mon, 14 Oct 2002, Constantin Teodorescu wrote:

> create function ruldeb(bpchar) returns bpchar as '
> set cont $1
> set rulaj 0.0
> spi_exec -array rec "select valoare from valori where debitor LIKE
> \'$cont%\'" {
> set rulaj [expr {$rulaj + $rec(valoare)}]
> }
> if {![info exists GD(conturi_lookup)]} {
> set GD(conturi_lookup) [spi_prepare "select cheie,denumire from
> conturi where id=\'\\$1\'" [list bpchar]]
> }
> spi_execp -count 1 $GD(conturi_lookup) [list $cont]
> return "{$cheie} {$denumire} $rulaj"
> ' LANGUAGE 'pltcl';
>
>
> is giving the following error:
>
> ERROR: pltcl: can't read "cheie": no such variable
> can't read "cheie": no such variable
> while executing
> "return "{$cheie} {$denumire} $rulaj""
> (procedure "__PLTcl_proc_1759991" line 12)
> invoked from within
> "__PLTcl_proc_1759991 4:0:1:1:2:"

Looks like your prepared query is not finding any matching tuples.

If a query returns 0 tuples then all column variables will be undefined.
Undefined because if you set them before then they will not be unset. This
differs from the case where a tuple has been returned by the query but a
column's value is NULL. In this case the TCL variable is unset.

--
Nigel J. Andrews