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IsVariableLength Property

Questa caratteristica verrà rimossa a partire da una delle prossime versioni di Microsoft SQL Server. Evitare di utilizzare questa caratteristica in un nuovo progetto di sviluppo e prevedere interventi di modifica nelle applicazioni in cui è attualmente implementata.

The IsVariableLength property specifies data length representation handling for a data type.

Sintassi

object
.IsVariableLength

Parts

  • object
    An expression that evaluates to an object in the Applies To list

Data Type

Boolean

Modifiable

Read-only

Prototype (C/C++)

HRESULT GetIsVariableLength(LPBOOL pRetVal);

Osservazioni

If TRUE, the data type represents strings that vary in length, such as those defined as varchar(4).

If FALSE, the data type does not represent strings that vary in length, such as those defined as char(4).

Variability in string representation is easily visible in client software. For example, the string AK retrieved from a column defined as varchar(4) is returned to a client as two characters. If retrieved from a column defined as char(4), the string is padded using a space character so that four characters are returned.