SubCategoryName NVARCHAR ( 15 ) NOT NULL, SubCategoryID INT IDENTITY ( 1, 1 ) NOT NULL, The table will be a heap (no index) when created initially using the following script. Let's take a look at the process using a table that I am going to create in the Northwind database on my SQL Server instance called SubCategories. What happens if you skipped assigning a primary key in Access and now wish to do so? The process is identical to what I just demonstrated in regards to DDL changes to the SQL Server table. asked in the forums of the Linked SQL Server Tables tip about skipping the assignment of a primary key during the initial linking. Now, if we are to look at the linked table in Design Mode within Access you will see the two new columns we added in SQL Server. Then cancel out of the Linked Table Manager to return to the main Access interface. You will receive a notification that all tables were successfully updated. Once you select the table(s) you wish to update select OK. To launch, select Tools\ Databases Utilities\ Linked Table Manager from the menu bar in Access. In order to recognized the structural changes in the underlying SQL table you will need to make use of the Linked Table Manager within Microsoft Access. We will now add two columns to the SQL Server table RegionSupervisorID (int, null) and TerritorySupervisorID (int, null) as shown below:Īfter the changes, the Access table will still appear as it did prior to the DDL changes: The current schema for the table looks like this from a SQL Server perspective: We will use the Territories table in the Northwind database as an example. If you need to make changes to the table you will need to do so in Microsoft SQL Server and then re-link the table. Although the user may have been granted db_owner role rights in the underlying SQL Server database, that user is unable to make data definition changes (DDL changes) to the table. This is because the design of the linked table is owned by the underlying object within SQL Server. When you attempt to modify the design of a linked table in Access you receive the following message: This is accomplished by navigating to the Tables tab, selecting the appropriate table and right clicking on the 'Design View' option on the menu. Let's start with modifying a Linked SQL Server table's structure. If editing data isn't necessary, you may create a query and change the RecordsetType property to Snapshot which will return a read-only recordset that’s not affected by this issue.Let's take a look at both of those situations one step at a time. Note: This will round values to the nearest minute. Change the data type from datetime to smalldatetime.Remove fractional seconds from the datetime column(s) using an UPDATE statement.Add a new column to the table using either timestamp or rowversion data type.Make sure that the datetime and DateTime2 columns aren't part of the primary key.Change the compatibility level of the SQL Server database to 120 (the compatibility level for SQL Server 2014) or less.For more information, see Set user options for the current database.įor earlier versions of Access, use one of the following methods to work around this issue: You can enable or disable the Date & Time Extended data type for linking and importing operations by using the Current Database Access option Support Date Time Extended (DateTime2) Data Type for Linked/lmported Tables. As a result, if the data type is implemented within a local Access table and the Access database is used with a previous version that doesn't include this feature, you can't open the database. The Date & Time Extended data type isn't compatible with previous versions of Microsoft Access.
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