[ psqlodbc-Bugs-1000744 ] 08.02.01: Incorrect size returned for adVarWChar and adVarChar fields after Paremeters.Refresh.

Bugs item #1000744, was opened at 2006-10-04 18:42
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Category: None
Group: None
>Status: Closed
Resolution: None
Priority: 3
Submitted By: Adam Biser (adambiser)
>Assigned to: Hiroshi Inoue (hinoue)
Summary: 08.02.01: Incorrect size returned for adVarWChar and adVarChar fields after Paremeters.Refresh.

Initial Comment:
I'm using VB6 on a Windows XP machine with ODBC driver 08.02.01 and PostgreSQL 8.2beta1.

CREATE TABLE testtable
(
  code integer NOT NULL,
  testfield character varying(5000),
  CONSTRAINT proschargemstrpk PRIMARY KEY (proschargecode)
)

When I use a Command object, set the CommandText, and perform a .Parameters.Refresh, the .Size of testfield's parameter
is254 instead of 5000 and setting the .Value of the parameter to anything longer than 254 characters results in an
error. This happens with both the Unicode and ANSI drivers. 

The create table statement that pgAdmin III gives me is included at the top.  If any additional information is needed,
Iwill provide it. 

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Comment By: Adam Biser (adambiser)
Date: 2006-10-05 12:55

Message:
Not really because the schema is written for an AS400, which
doesn't have a TEXT data type.  We're interested in having
PostgreSQL as an alternative and I think that of the two
work-arounds, setting the "Max Varchar Size" to a larger
number is more acceptable at the moment.  I'd rather do that
than maintain two versions of the schema.

Thanks

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Comment By: Hiroshi Inoue (hinoue)
Date: 2006-10-05 02:30

Message:
Unfortunately this problem is hard to solve.
Couldn't you change the defintion of the textfiled
from varchar(5000) to text ?

regards,
Hiroshi Inoue

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Comment By: Adam Biser (adambiser)
Date: 2006-10-04 20:12

Message:
I did find a work-around for this by change MaxVarcharSize
to match the Max LongVarChar size, but I don't think the
parameter should say it's a VarChar(254) when it's a
LongVarChar(5000).

The "Text as LongVarChar" checkbox has been checked on the
DSN's property pages.

----------------------------------------------------------------------

Comment By: Adam Biser (adambiser)
Date: 2006-10-04 18:54

Message:
Sorry, the primary key should be "code"... I meant to
simplify the field names, but forgot to change the
constraint line.

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