Question

In my DB, I have a table that was created from an Excel sheet, via a Linked Server option.

I am now trying to compare its contents versus one of my main tables.

The tables I am comparing are in the same database.

There is a date column in both tables, both types are datetime and have Collation of SQL_Latin1_General_CP1_CI_AS, the same as the DB.

The server collation is Latin1_General_CI_AS

However when I try to run a query comparing the dates between the tables, I get the error:

      Cannot resolve the collation conflict between       'Latin1_General_CI_AS' and       'SQL_Latin1_General_CP1_CI_AS' in the       equal to operation. 

I have tried with and without the COLLATE option, using both collation settings.

My query is:

select * , hxl.holiday_dt,  datediff(d, h.holiday_dt collate SQL_Latin1_General_CP1_CI_AS,              hxl.holiday_dt collate SQL_Latin1_General_CP1_CI_AS) from holiday h, Holiday_XL hxl where h.currency_cd=hxl.currency_cd 

In fact any query involving both tables gives exactly the same collation error, eg this one:

select count(*) from Holiday_XL c where c.currency_cd in (select distinct h.currency_cd from holiday h) 

Thanks in advance for any thoughts.

Regards, Chris

Answer 1

The error is being reported on the currency comparison h.currency_cd=hxl.currency_cd, not on datediff, so try force collation on the currencies.

Collation is only relevant for character (char, varchar, nvarchar) and text types.