Updating sql tables when joined

Specifies the temporary named result set or view, also known as common table expression (CTE), defined within the scope of the UPDATE statement.

The CTE result set is derived from a simple query and is referenced by UPDATE statement.

Updating sql tables when joined dating job

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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.

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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.

Then, you will learn about the advanced queries such as joining multiple tables, using set operations, and constructing the subquery.

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