Is entirely controlled by the user-defined iterable. PyTorch Governance | Persons of Interestįor iterable-style datasets, data loading order.CPU threading and TorchScript inference.CUDA Automatic Mixed Precision examples. Then DATABASE_DEFAULT is very useful when creating temp tables to make sure the collations of columns in that temp table match the default collation of the database you are currently attached to. But if you have databases that have a different collation than the model database in your instance, Of course, it is best if all the databases and all the columns in your instance have the same collation. If you compare two column of different collations by using the COLLATE clause, SQL is unable to use any indexes you It is true you can avoid that error by specifying the COLLATE clause in your select statement. But by using the DATABASE_DEFAULT clause in the creation of #Product, you get the collation of your current database, which is Latin1_General_100_CI_AS_KS_WS_SC. Table (which in your case is SQL_Latin1_General_CP1_CI_AS). So when you did that SELECT INTO, you got the collation of the columns in your In particular, they get the same COLLATION. The columns have the same attributes as the source (datatype, length, etc). When you use SELECT INTO, the new table has the same columns as the columns So then, of course, the question is, why did the code you gave fail when you used DATABASE_DEFAULT? The reason is you used SELECT INTO to create the awProduct table. SELECT 'With DATABASE_DEFAULT the following select will work' SELECT 'Without DATABASE_DEFAULT the following select will get error'Ĭannot resolve the collation conflict between "SQL_Latin1_General_CP1_CI_AS" and "Latin1_General_100_CI_AS_KS_WS_SC" in the equal to operation. INSERT awProduct(Name) SELECT Name from ĬREATE TABLE #Product ( ID INT, ProductName varchar(100)) USE master ĬREATE TABLE awProduct(Name nvarchar(100)) Use DATABASE_DEFAULT you get the collation conflict error. Then when you use DATABASE_DEFAULT for the temp table it works fine, but when you don't You can see that it makes a difference by running the following code (which is much the same as yours except I use a CREATE TABLE to create the awProduct table. The collation to match the default collation of the current database. However, you can use DATABASE_DEFAULT to force If you create a temporary table, the columns in the temporary table get the default collation of tempdb (which is also the default collation of master and model). When you create a column in permanent table table (either by CREATE TABLE or by ALTER TABLE ADD) and you don't specify the collation of the columnthat column gets the default collation Setting the COLLATE to DATABASE_DEFAULT does make a difference. ON aw.Name = t.ProductName COLLATE DATABASE_DEFAULT "SQL_Latin1_General_CP1_CI_AS" in the equal to operation. SELECT * FROM awProduct aw INNER JOIN #Product tĬannot resolve the collation conflict between "Latin1_General_100_CI_AS_KS_WS_SC" and INSERT #Product VALUES (1, 'Bearing Ball') SELECT * INTO awProduct from ĬREATE TABLE #Product ( ID INT, ProductName varchar(100) COLLATE DATABASE_DEFAULT) USE master ĬREATE DATABASE COLLATE Latin1_General_100_CI_AS_KS_WS_SC See below that COLLATE DATABASE_DEFAULT in CREATE TABLE does not solve the issue. Model database collation can only be change with reinstall. Tempdb inherits collation from the model database. The real solution is: all databases (all columns) with the same collation in a SQL Server instance. More specifically if two columns in an operation has different collation. SELECT statement has collation conflict if the tempdb collation is different from the application database. I was referring to COLLATE DATABASE_DEFAULT in CREATE TABLE: it does not do anything, it will not solve anything. Kalman Toth Database & OLAP Architect SQL Server 2014 Design & Programming New Book / Kindle: Exam 70-461 Bootcamp: Querying Microsoft SQL Server 2012 Columns inherit the database default collation. You don't have to COLLATE DATABASE_DEFAULT since that is the db default anyhow, nonetheless it works. You can use the COLLATE specification with CREATE TABLE for temporary table. What is the issue? Collation can be real tricky (and only one person understands it in the entire world).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |