Обсуждение: Re: [GENERAL] Mapping PostgreSQL data types to DB2 Federated Server

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Re: [GENERAL] Mapping PostgreSQL data types to DB2 Federated Server

От
"Alexander Gataric"
Дата:
The IBM people aren't being helpful so I thought I'd ask here.

Sent from my smartphone

----- Reply message -----
From: "John R Pierce" <pierce@hogranch.com>
To: <pgsql-general@postgresql.org>
Subject: [GENERAL] Mapping PostgreSQL data types to DB2 Federated Server
Date: Sun, Oct 14, 2012 8:05 pm


On 10/14/12 5:52 PM, Alexander Gataric wrote:
>
> I'm on a project which requires adding PostgreSQL tables to DB2 > Federated Server. I'm getting an error with PostgreSQL data types > boolean, text, bytea, and XML. I believe this can be solved with the > CREATE TYPE MAPPING in Fed Server. Does anyone know which values to > use? I'm not that familiar with Fed Server.
>
> Also, the Postgres data is being extracted and inserted from the same > table using Optim Archive. Does this pose an additional challenge with > setting up the mapping?
>

I suggest you talk to your IBM support contacts for these issues, they really have little to do with Postgres and are completely beyond postgres' control.



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john r pierce                            N 37, W 122
santa cruz ca                         mid-left coast



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Re: Re: [GENERAL] Mapping PostgreSQL data types to DB2 Federated Server

От
Craig Ringer
Дата:
On 10/15/2012 09:37 AM, Alexander Gataric wrote:
> The IBM people aren't being helpful so I thought I'd ask here.

Try dba.stackexchange.com .

--
Craig Ringer



Re: Re: [GENERAL] Mapping PostgreSQL data types to DB2 Federated Server

От
John R Pierce
Дата:
On 10/14/12 6:37 PM, Alexander Gataric wrote:
> On 10/14/12 5:52 PM, Alexander Gataric wrote:
> >
> > I'm on a project which requires adding PostgreSQL tables to DB2 >
> Federated Server. I'm getting an error with PostgreSQL data types >
> boolean, text, bytea, and XML. I believe this can be solved with the >
> CREATE TYPE MAPPING in Fed Server. Does anyone know which values to >
> use? I'm not that familiar with Fed Server.

I googled db2 data types.

http://publib.boulder.ibm.com/infocenter/dzichelp/v2r2/index.jsp?topic=%2Fcom.ibm.db2z10.doc.intro%2Fsrc%2Ftpc%2Fdb2z_datatypes.htm

Postgres' TEXT would map to VARCHAR(n) but you'll have to decide on a
suitable max length for you n value.    ther's nothing like boolean, so
probably mapping it either to a SMALLINT where 't' is 1 and 'f' is 0, or
mapping it to a char(1) and just storing it as t/f for true/false.
BYTEA is equivalent to a BLOB, whatever DB2 uses for that.    and DB2 is
supposed to have an XML type, but I suppose you could just map it to
VARCHAR(n) again, as XML is really just a bunch of text formatted with
html-like entities.





--
john r pierce                            N 37, W 122
santa cruz ca                         mid-left coast