Considerations To Know About Convertri Lifetime

D.D. Agregar una restricción DEFAULT a una columna existenteAdding a DEFAULT constraint to an present column

This may be used for archival, or for other circumstances that require fewer storage and will afford to pay for a lot more time for storage and retrieval Para volver a generar al mismo tiempo varias particiones, vea index_option (Transact-SQL).To rebuild several partitions at the same time, see index_option (Transact-SQL). Si la tabla no tiene un índice clúster, al cambiar la compresión de datos se vuelven a generar el montón y los índices no clúster.In the event the desk doesn't have a clustered index, altering the data compression rebuilds the heap plus the nonclustered indexes. Para más información sobre la compresión, vea Compresión de datos.To find out more about compression, see Information Compression. ONLINE = ON

The Recommendations were being described inside a Google Docs doc (which BJ was nonetheless modifying as I had been reading through it)

En el ejemplo siguiente se agrega una columna que acepta valores NULL con una definición DEFAULT y se United states of america WITH VALUES para proporcionar valores para cada fila existente en la tabla.The subsequent instance adds a nullable column having a DEFAULT definition, and makes use of WITH VALUES to supply values for each current row from the desk.

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Es el nuevo tipo de datos de la columna modificada o el click here tipo de datos de la columna agregada.Is The brand new information sort with the altered column, or the data variety with the included column.

Especifica que se agregan una o más definiciones de columna, definiciones de columnas calculadas o restricciones de tabla, o las columnas que el sistema utilizará para el Management de versiones del sistema.Specifies that one or more column definitions, computed column definitions, or desk constraints are additional, or perhaps the columns the process will use for system versioning.

Las modificaciones realizadas en la tabla se registran y son completamente recuperables.The modifications manufactured for the desk are logged and totally recoverable. Los cambios que afectan a todas las filas de tablas muy grandes, como quitar una columna o, en algunas ediciones de SQL ServerSQL Server, agregar una columna NOT NULL con un valor predeterminado, pueden tardar get more info mucho tiempo en completarse y generan muchos registros.Changes that have an affect on many of the rows in very big tables, for example dropping a column or, on some editions of SQL ServerSQL Server, adding a NOT NULL column having a default price, might take a long time to accomplish and produce quite a few log documents. Estas instrucciones ALTER TABLE deben ejecutarse con el mismo cuidado que cualquier instrucción INSERT, UPDATE o DELETE que afecte a un gran número de filas.These Change TABLE statements must be executed Using the very same care as any INSERT, UPDATE, or DELETE statement that has an effect on many rows. Agregar columnas NOT NULL como una operación en líneaAdding NOT NULL Columns as a web-based Procedure

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Deshabilitar y habilitar restricciones y desencadenadoresDisabling and enabling constraints and triggers

Es el nombre del esquema al que pertenece la tabla.Is the title from the schema to which the table belongs.

Si no se especifica la cláusula COLLATE, la modificación de un tipo de datos de columna tendrá como resultado un cambio de intercalación a la intercalación predeterminada de la base de datos.

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