dating next level - Updating a view in sql server

by  |  22-Jun-2015 02:53

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. Avoid using these hints in this context in new development work, and plan to modify applications that currently use them.

All other references to the object in the FROM clause must include an object alias. Table2; USE Adventure Works2012; GO IF OBJECT_ID ('dbo. columns, except in strings that contain only spaces. If ANSI_PADDING is set to ON, trailing spaces are inserted.

Compound assignment operator: += Add and assign -= Subtract and assign *= Multiply and assign /= Divide and assign %= Modulo and assign &= Bitwise AND and assign ^= Bitwise XOR and assign |= Bitwise OR and assign Returns updated data or expressions based on it as part of the UPDATE operation. 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.

The OUTPUT clause is not supported in any DML statements that target remote tables or views. 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. Table2 (d1 int PRIMARY KEY NOT NULL, d2 int NOT NULL); GO INSERT INTO dbo. Table2 VALUES (1, 20), (2, 30); GO DECLARE abc CURSOR LOCAL FOR SELECT c1, c2 FROM dbo. Table1; GO 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.

A view with an INSTEAD OF UPDATE trigger cannot be a target of an UPDATE with a FROM clause. The Microsoft SQL Server ODBC driver and OLE DB Provider for SQL Server automatically set ANSI_PADDING ON for each connection.

Any call to OPENDATASOURCE, OPENQUERY, or OPENROWSET in the FROM clause is evaluated separately and independently from any call to these functions used as the target of the update, even if identical arguments are supplied to the two calls. This can be configured in ODBC data sources or by setting connection attributes or properties.

In particular, filter or join conditions applied on the result of one of those calls have no effect on the results of the other. For more information, see 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.

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