Sql updating large number of rows


There is no limit to the number of predicates that can be included in a search condition.

For more information about predicates and search conditions, see Search Condition (Transact-SQL). Table2; USE Adventure Works2012; GO IF OBJECT_ID ('dbo.

All other references to the object in the FROM clause must include an object alias.

A view with an INSTEAD OF UPDATE trigger cannot be a target of an UPDATE with a FROM clause.

Note 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.

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

This can be more accurate than a searched update that uses a WHERE ] ) Specifies that optimizer hints are used to customize the way the Database Engine processes the statement. Avoid using these hints in this context in new development work, and plan to modify applications that currently use them.

For more information, see Query Hints (Transact-SQL). All char and nchar columns are right-padded to the defined length.

The search condition can also be the condition upon which a join is based.

TOP ( ) Specifies one or more table hints that are allowed for a target table. @Note When referencing the Unicode character data types nchar, nvarchar, and ntext, 'expression' should be prefixed with the capital letter ' N'.

If ' N' is not specified, SQL Server converts the string to the code page that corresponds to the default collation of the database or column.

Common table expressions can also be used with the SELECT, INSERT, DELETE, and CREATE VIEW statements.

For more information, see WITH common_table_expression (Transact-SQL). For information about table hints, see Table Hints (Transact-SQL).

For example, a partial update of a varchar(max) column might delete or modify only the first 200 characters of the column, whereas a full update would delete or modify all the data in the column. WRITE updates that insert or append new data are minimally logged if the database recovery model is set to bulk-logged or simple.

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