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* Can't use GetAttributeByName for text type..
@ 1995-01-05 08:54 Xinguo Wei <wei@u.washington.edu>
0 siblings, 1 reply; 2+ messages in thread
From: Xinguo Wei @ 1995-01-05 08:54 UTC (permalink / raw)
To: legacy
Hi Postgresers,
I can't make the GetAttributeByName work for my text attribute. The
syntax I have is shown here,
char name[4];
strcpy(name,GetAttributeByName(t,"graphic_model", &isnull));
The attribute "graphic_model" is defined as text type.
The name array has all the garbage instead of the actual value.
What is the problem here?
My platform is Dec Alpha OSF/1.
Xinguo
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^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: Can't use GetAttributeByName for text type..
@ 1995-01-05 17:12 Paul M. Aoki <aoki@cs.berkeley.edu>
parent: Xinguo Wei <wei@u.washington.edu>
0 siblings, 0 replies; 2+ messages in thread
From: Paul M. Aoki @ 1995-01-05 17:12 UTC (permalink / raw)
To: Xinguo Wei <wei@u.washington.edu>; +Cc: legacy
Xinguo Wei <wei@u.washington.edu> writes:
> char name[4];
> strcpy(name,GetAttributeByName(t,"graphic_model", &isnull));
"text" is not a C string. "text" is
struct varlena {
int32 vl_len;
char vl_dat[1];
};
[...]
typedef struct varlena text;
the data is not NUL-delimited.
(this is not particularly safe code in any case -- what happens if
graphic_model is null?)
--
Paul M. Aoki | University of California at Berkeley
aoki@CS.Berkeley.EDU | Dept. of EECS, Computer Science Division (#1776)
| Berkeley, CA 94720-1776
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1995-01-05 08:54 Can't use GetAttributeByName for text type.. Xinguo Wei <wei@u.washington.edu>
1995-01-05 17:12 ` Paul M. Aoki <aoki@cs.berkeley.edu>
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