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Informix - Problem description

Problem IT32397 Status: Closed

DBSCHEMA DOES NOT OUTPUT NOT NULL PHRASE ON EXTERNAL TABLES.

product:
INFORMIX SERVER / 5725A3900 / B70 - IDS 11.70
Problem description:
Consider the dbschema output for the external table below:

create table test(i integer not null,j integer);
insert into test values(1,1);
insert into test values(2,2);
insert into test values(3,3);
CREATE EXTERNAL TABLE ec_test (i integer not null,j integer)
using ( datafiles ("DISK:/tmp/ec_test.unl")) ;
insert into ec_test select * from test;

The dbaccess tool indicates the column is not null:

Column name         Type                                   Nulls
i                   integer                                no
j                   integer                                yes


But dbschema does not:

dbschema -d TS003496979 -t ec_test
DBSCHEMA Schema Utility      INFORMIX-SQL Version 14.10.FC3
{ TABLE "informix".ec_test row size = 8 number of columns = 2
create external table "informix".ec_test
 (
   i integer,
   j integer
 )
using
 (
   datafiles
     (
       "DISK:/tmp/ec_test.unl"
     ),
   format "delimited",
   escape on
 );
revoke all on "informix".ec_test from "public" as "informix";

Even though "not null" was used while creating the external
table, the dbschema output above omits it.
Problem Summary:
****************************************************************
* USERS AFFECTED:                                              *
* Users of Informix Server prior to 11.70.xC9W2, 12.10.xC15    *
* and 14.10.xC5.                                               *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Informix Server 11.70.xC9W2, 12.10.xC15 (when     *
* available) or 14.10.xC5.                                     *
****************************************************************
Local Fix:
Solution
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
01.04.2020
15.12.2020
15.12.2020
Problem solved at the following versions (IBM BugInfos)
Problem solved according to the fixlist(s) of the following version(s)
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