Обсуждение: SQLTables and szTableRemarks field?

Hi,

I am using unixODBC driver 2.2.12 on Mac OSX 10.5.2 or Windows XP and
the pgODBC driver 08.03.0400.

When reading out tables with SQLTables I did not get the remarks field.

Why is this happen or is it unimplemented?

I bind the columns as follows:

    SQLBindCol(hstmt, 1, SQL_C_CHAR, szTableCatalog, TAB_LEN,
&cbTableCatalog);
    SQLBindCol(hstmt, 2, SQL_C_CHAR, szTableSchema, TAB_LEN,
&cbTableSchema);
    SQLBindCol(hstmt, 3, SQL_C_CHAR, szTableName, TAB_LEN, &cbTableName);
    SQLBindCol(hstmt, 4, SQL_C_CHAR, szTableType, TAB_LEN, &cbTableType);
    SQLBindCol(hstmt, 5, SQL_C_CHAR, szTableRemarks, REM_LEN,
&cbTableRemarks);

And use either

    retcode = SQLTables(hstmt, NULL, 0, (unsigned char*) schema,
strlen(schema), NULL, 0, NULL, 0);

or

    retcode = SQLTables(hstmt, NULL, 0, NULL, 0, NULL, 0, NULL, 0);

Any ideas?

Thanks

Lothar

-- | Rapid Prototyping | XSLT Codegeneration | http://www.lollisoft.de
Lothar Behrens
Heinrich-Scheufelen-Platz 2
73252 Lenningen

,--- You/Lothar (Mon, 6 Jul 2009 00:37:31 +0200) ----*
| When reading out tables with SQLTables I did not get the remarks field.
|
| Why is this happen or is it unimplemented?

Per the documentation available online, it is not.

| I bind the columns as follows:
|
|     SQLBindCol(hstmt, 1, SQL_C_CHAR, szTableCatalog, TAB_LEN,
| &cbTableCatalog);
|     SQLBindCol(hstmt, 2, SQL_C_CHAR, szTableSchema, TAB_LEN,
| &cbTableSchema);
|     SQLBindCol(hstmt, 3, SQL_C_CHAR, szTableName, TAB_LEN, &cbTableName);
|     SQLBindCol(hstmt, 4, SQL_C_CHAR, szTableType, TAB_LEN, &cbTableType);
|     SQLBindCol(hstmt, 5, SQL_C_CHAR, szTableRemarks, REM_LEN,
| &cbTableRemarks);

The fifth column of the `information_schema.tables' table is called,
in fact, `self_referencing_column_name', and "applies to a feature not
available in PostgreSQL".

-- Alex -- alex-goncharov@comcast.net --

Hi,

thanks. But now I had a look at the pg_catalog assuming the comments
must be there anywhere.
I found it in pg_description. Would it useful if the comment is
retrieved from that table?

How much work would it be (I am not familar with the odbc driver code
it self, but I think there it is best)
to implement that?

Thanks

Lothar

Am 06.07.2009 um 02:06 schrieb Alex Goncharov:

> ,--- You/Lothar (Mon, 6 Jul 2009 00:37:31 +0200) ----*
> | When reading out tables with SQLTables I did not get the remarks
> field.
> |
> | Why is this happen or is it unimplemented?
>
> Per the documentation available online, it is not.
>
> | I bind the columns as follows:
> |
> |     SQLBindCol(hstmt, 1, SQL_C_CHAR, szTableCatalog, TAB_LEN,
> | &cbTableCatalog);
> |     SQLBindCol(hstmt, 2, SQL_C_CHAR, szTableSchema, TAB_LEN,
> | &cbTableSchema);
> |     SQLBindCol(hstmt, 3, SQL_C_CHAR, szTableName, TAB_LEN,
> &cbTableName);
> |     SQLBindCol(hstmt, 4, SQL_C_CHAR, szTableType, TAB_LEN,
> &cbTableType);
> |     SQLBindCol(hstmt, 5, SQL_C_CHAR, szTableRemarks, REM_LEN,
> | &cbTableRemarks);
>
> The fifth column of the `information_schema.tables' table is called,
> in fact, `self_referencing_column_name', and "applies to a feature not
> available in PostgreSQL".
>
> -- Alex -- alex-goncharov@comcast.net --
>

-- | Rapid Prototyping | XSLT Codegeneration | http://www.lollisoft.de
Lothar Behrens
Heinrich-Scheufelen-Platz 2
73252 Lenningen