columns_updated compatibility between sql2000 and sql 2005

Hi,
I am working on a trigger that could be installed on both sql2000 and
sql2005, so the code has to work on both systems.
The trigger uses COLUMNS_UPDATED() function to determine which fields were
updated, as BOL for sql 2005 indicate there is a slight difference
in this function parameters: if you work with sql2000 you can use
ORDINAL_POSITION of the field from INFORMATION_SCHEMA.COLUMNS, apply some
calculations and then use the value with columns_updated, in case of sql2005
you have to use COLUMNPROPERTY(OBJECT_ID(TABLE_SCHEMA + '.' + TABLE_NAME),
COLUMN_NAME, 'ColumnID') from INFORMATION_SCHEMA.COLUMNS, the latter version
does not work properly in sql 2000.
My question: Is it possible to write a single trigger that uses
columns_updated and works on both versions, if not how to distinguish
between 2 versions in a trigger,
e.g. if ver2000 set @.var = ....
else if ver2005 set @.var=...
Please let me know if the question is not clear I'll try to add more info.
Thank you
VadimHi
The ColumnId property is new in SQL 2005, therefore earlier versions would
return NULL so you could try something like:
ISNULL(COLUMNPROPERTY(OBJECT_ID(TABLE_SCHEMA + '.' + TABLE_NAME),
COLUMN_NAME, 'ColumnID'),ORDINAL_POSITION)
You could use the columnid and other information directly from syscolumns if
you aren't concerned about using system catalogues.
If you want to check SQL Server version look at
SELECT SERVERPROPERTY('ProductVersion')
other ways are listed at
http://sqlserver2000.databases.aspfaq.com/how-do-i-know-which-version-of-sql-server-i-m-running.html
John
"Vadim" wrote:
> Hi,
> I am working on a trigger that could be installed on both sql2000 and
> sql2005, so the code has to work on both systems.
> The trigger uses COLUMNS_UPDATED() function to determine which fields were
> updated, as BOL for sql 2005 indicate there is a slight difference
> in this function parameters: if you work with sql2000 you can use
> ORDINAL_POSITION of the field from INFORMATION_SCHEMA.COLUMNS, apply some
> calculations and then use the value with columns_updated, in case of sql2005
> you have to use COLUMNPROPERTY(OBJECT_ID(TABLE_SCHEMA + '.' + TABLE_NAME),
> COLUMN_NAME, 'ColumnID') from INFORMATION_SCHEMA.COLUMNS, the latter version
> does not work properly in sql 2000.
> My question: Is it possible to write a single trigger that uses
> columns_updated and works on both versions, if not how to distinguish
> between 2 versions in a trigger,
> e.g. if ver2000 set @.var = ....
> else if ver2005 set @.var=...
> Please let me know if the question is not clear I'll try to add more info.
> Thank you
> Vadim
>
>|||John,
Thank you very much, that's exactly what I needed, it worked.
Vadim
"John Bell" <jbellnewsposts@.hotmail.com> wrote in message
news:7F8A7747-8E97-432B-A722-A50801BDB805@.microsoft.com...
> Hi
> The ColumnId property is new in SQL 2005, therefore earlier versions would
> return NULL so you could try something like:
> ISNULL(COLUMNPROPERTY(OBJECT_ID(TABLE_SCHEMA + '.' + TABLE_NAME),
> COLUMN_NAME, 'ColumnID'),ORDINAL_POSITION)
> You could use the columnid and other information directly from syscolumns
> if
> you aren't concerned about using system catalogues.
> If you want to check SQL Server version look at
> SELECT SERVERPROPERTY('ProductVersion')
> other ways are listed at
> http://sqlserver2000.databases.aspfaq.com/how-do-i-know-which-version-of-sql-server-i-m-running.html
>
> John
> "Vadim" wrote:
>> Hi,
>> I am working on a trigger that could be installed on both sql2000 and
>> sql2005, so the code has to work on both systems.
>> The trigger uses COLUMNS_UPDATED() function to determine which fields
>> were
>> updated, as BOL for sql 2005 indicate there is a slight difference
>> in this function parameters: if you work with sql2000 you can use
>> ORDINAL_POSITION of the field from INFORMATION_SCHEMA.COLUMNS, apply some
>> calculations and then use the value with columns_updated, in case of
>> sql2005
>> you have to use COLUMNPROPERTY(OBJECT_ID(TABLE_SCHEMA + '.' +
>> TABLE_NAME),
>> COLUMN_NAME, 'ColumnID') from INFORMATION_SCHEMA.COLUMNS, the latter
>> version
>> does not work properly in sql 2000.
>> My question: Is it possible to write a single trigger that uses
>> columns_updated and works on both versions, if not how to distinguish
>> between 2 versions in a trigger,
>> e.g. if ver2000 set @.var = ....
>> else if ver2005 set @.var=...
>> Please let me know if the question is not clear I'll try to add more
>> info.
>> Thank you
>> Vadim
>>