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If the UPDATE statement could change more than one row when updating both the clustering key and one or more text, ntext, or image columns, the partial update to these columns is executed as a full replacement of the values.To replace or modify large blocks of text, ntext, or image data, use WRITETEXT or UPDATETEXT instead of the UPDATE statement. Table2; The same problem can occur when the FROM and WHERE CURRENT OF clauses are combined. Do not use SET ROWCOUNT with DELETE, INSERT, and UPDATE statements in new development work, and plan to modify applications that currently use it. Support for use of the READUNCOMMITTED and NOLOCK hints in the FROM clause that apply to the target table of an UPDATE or DELETE statement will be removed in a future version of SQL Server.
To allow the PERIOD column value update we have to drop the PERIOD definition by executing the following statement --First disable the system versioning ALTER TABLE dbo.Employee SET (SYSTEM_VERSIONING = OFF) GO --Drop Period definition.--This will allow manipulations on the PERIOD columns ALTER TABLE dbo. Table1 (c1 int PRIMARY KEY NOT NULL, c2 int NOT NULL); GO CREATE TABLE dbo. Table2 WHERE CURRENT OF abc; GO SELECT c1, c2 FROM dbo.When a FILESTREAM field is set to NULL, the BLOB data associated with the field is deleted. WRITE(), to perform partial updates to FILESTREAM data. Modifying a text, ntext, or image column with UPDATE initializes the column, assigns a valid text pointer to it, and allocates at least one data page, unless the column is being updated with NULL.
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. For example, in the UPDATE statement in the following script, both rows in Table1 meet the qualifications of the FROM clause in the UPDATE statement; but it is undefined which row from Table1 is used to update the row in Table2. When you update a FILESTREAM field, you modify the underlying BLOB data in the file system.