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The results of an UPDATE statement are undefined if the statement includes a FROM clause that is not specified in such a way that only one value is available for each column occurrence that is updated, that is if the UPDATE statement is not deterministic. Table1 VALUES(1, 10.0), (1, 20.0); INSERT INTO dbo. For more information, see The Transaction Log (SQL Server).
For example, in the UPDATE statement in the following script, both rows in USE Adventure Works2012; GO IF OBJECT_ID ('dbo. The Database Engine converts a partial update to a full update when the UPDATE statement causes either of these actions: are specified in bytes for varbinary and varchar data types and in characters for the nvarchar data type.
If an update to a column or columns participating in a clustered index causes the size of the clustered index and the row to exceed 8,060 bytes, the update fails and an error message is returned. Sales Person ID); GO Examples in this section demonstrate how to update rows in a remote target table by using a linked server or a rowset function to reference the remote table.
FROM Specifies that a table, view, or derived table source is used to provide the criteria for the update operation. If the object being updated is the same as the object in the FROM clause and there is only one reference to the object in the FROM clause, an object alias may or may not be specified.
If the object being updated appears more than one time in the FROM clause, one, and only one, reference to the object must not specify a table alias.
There is no limit to the number of predicates that can be included in a search condition. This can be configured in ODBC data sources or by setting connection attributes or properties.
For more information about predicates and search conditions, see Search Condition (Transact-SQL). For more information, see SET ANSI_PADDING (Transact-SQL).