Crear Una Vista En Workbench Ideas

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Vamos a repasar la sentencia CREATE VIEW MySQL, esta tiene como finalidad crear tablas virtuales a partir de consultas SELECT a otras tablas. Las vistas de una base de datos MySQL tienen la misma estructura de filas y columnas de una tabla, no puede haber una vista con el mismo nombre de una tabla. Otras sentencias para trabajar con vistas en MySQL son.

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APPLIES TO: SQL Server Azure SQL Database Azure Synapse Analytics (SQL DW) Parallel Data Warehouse

After you define a view, you can modify its definition in SQL Server 2019 (15.x) without dropping and re-creating the view by using SQL Server Management Studio or Transact-SQL.

In This Topic

Before You Begin

Limitations and Restrictions

  • Modifying a view does not affect any dependent objects, such as stored procedures or triggers, unless the definition of the view changes in such a way that the dependent object is no longer valid.

  • If a view currently used is modified by using ALTER VIEW, the Database Engine takes an exclusive schema lock on the view. When the lock is granted, and there are no active users of the view, the Database Engine deletes all copies of the view from the procedure cache. Existing plans referencing the view remain in the cache but are recompiled when invoked.

  • ALTER VIEW can be applied to indexed views; however, ALTER VIEW unconditionally drops all indexes on the view.

Security

Permissions

To execute ALTER VIEW, at a minimum, ALTER permission on OBJECT is required.

Crear

Using SQL Server Management Studio

To modify a view

  1. In Object Explorer, click the plus sign next to the database where your view is located and then click the plus sign next to the Views folder.

  2. Right-click on the view you wish to modify and select Design.

  3. In the diagram pane of the query designer, make changes to the view in one or more of the following ways:

    1. Select or clear the check boxes of any elements you wish to add or remove.

    2. Right-click within the diagram pane, select Add Table.., and then select the additional columns you want to add to the view from the Add Table dialog box.

    3. Right-click the title bar of the table you wish to remove and select Remove.

  4. On the File menu, click Saveview name.

Using Transact-SQL

To modify a view

  1. In Object Explorer, connect to an instance of Database Engine.

  2. On the Standard bar, click New Query.

  3. Copy and paste the following example into the query window and click Execute. The example first creates a view and then modifies the view by using ALTER VIEW. A WHERE clause is added to the view definition.

For more information, see ALTER VIEW (Transact-SQL).

dusttruth.cba.pl› ▀ ▀ Crear Una Vista En Workbench Ideas

Hola me parece muy bueno el blog y ya hace un tiempo mediante la informacion que aqui proporcionan realice una practica de replicacion la cual fue exitosa. En este momento que he querido volver a implementar replicacion se me ha presentado un problema el cual muestra el siguiente mensaje: Fatal error: The SLAVE I/O thread stops because MASTER AND SLAVE have equal MySQL SERVER ids; these ids must be different FOR REPLICATION TO WORK (OR the –replicate-same-SERVER-id OPTION must be used ON SLAVE but this does NOT always make sense; please CHECK the manual BEFORE USING it).

Quisiera saber si alguien sabe a que se debe. Los ids tanto en el servidor y en el cliente son diferentes por lo q no me explico que pueda estar pasando Si pueden ayudarme muchas Gracias!!

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Tutorial de SQL Workbench) jul 0. Ahora debemos crear una clase en workbench/unodepiera/saludo/src/Unodepiera/Saludo llamada Saludo.php.

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