Método de ejecución de ADO
❮ Referencia completa de objetos de conexión
El método Execute ejecuta una consulta específica, una instrucción SQL, un procedimiento almacenado o un texto específico del proveedor.
Los resultados se almacenan en un nuevo objeto Recordset si se trata de una consulta que devuelve filas. Se devolverá un objeto Recordset cerrado si no es una consulta de devolución de filas.
Nota: ¡El conjunto de registros devuelto siempre es un conjunto de registros de solo lectura y solo avance!
Sugerencia: Para crear un conjunto de registros con más funciones, primero cree un objeto de conjunto de registros. Establezca las propiedades deseadas y luego use el método Open del objeto Recordset para ejecutar la consulta.
Sintaxis para la devolución de filas
Set objrs=objconn.Execute(commandtext,ra,options)
Sintaxis para no retorno de fila
objconn.Execute commandtext,ra,options
| Parameter | Description |
|---|---|
| commandtext | Required. The SQL statement, stored procedure, or provider-specific text to execute |
| ra | Optional. The number of records affected by the query |
| options | Optional. Sets how the provider should evaluate the commandtext parameter. Can be one or more CommandTypeEnum or ExecuteOptionEnum values. Default is adCmdUnspecified |
Ejemplo
<%
sql="SELECT companyname FROM Customers"
Set rs=conn.Execute(sql)
%>
Valores de CommandTypeEnum
| Constant | Value | Description |
|---|---|---|
| adCmdUnspecified | -1 | Does not specify the command type argument. |
| adCmdText | 1 | Evaluates CommandText as a textual definition of a command or stored procedure call. |
| adCmdTable | 2 | Evaluates CommandText as a table name whose columns are all returned by an internally generated SQL query. |
| adCmdStoredProc | 4 | Evaluates CommandText as a stored procedure name. |
| adCmdUnknown | 8 | Indicates that the type of command in the CommandText property is not known. |
| adCmdFile | 256 | Evaluates CommandText as the file name of a persistently stored Recordset. Used with Recordset.Open or Requery only. |
| adCmdTableDirect | 512 | Evaluates CommandText as a table name whose columns are all returned. Used with Recordset.Open or Requery only. To use the Seek method, the Recordset must be opened with adCmdTableDirect. This value cannot be combined with the ExecuteOptionEnum value adAsyncExecute. |
Valores de ExecuteOptionEnum
| Constant | Value | Description |
|---|---|---|
| adOptionUnspecified | -1 | Indicates that the command is unspecified. |
| adAsyncExecute | Indicates that the command should execute asynchronously. This value cannot be combined with the CommandTypeEnum value adCmdTableDirect. | |
| adAsyncFetch | Indicates that the remaining rows after the initial quantity specified in the CacheSize property should be retrieved asynchronously. | |
| adAsyncFetchNonBlocking | Indicates that the main thread never blocks while retrieving. If the requested row has not been retrieved, the current row automatically moves to the end of the file. If you open a Recordset from a Stream containing a persistently stored Recordset, adAsyncFetchNonBlocking will not have an effect; the operation will be synchronous and blocking. adAsynchFetchNonBlocking has no effect when the adCmdTableDirect option is used to open the Recordset. | |
| adExecuteNoRecords | Indicates that the command text is a command or stored procedure that does not return rows (for example, a command that only inserts data). If any rows are retrieved, they are discarded and not returned. adExecuteNoRecords can only be passed as an optional parameter to the Command or Connection Execute method. | |
| adExecuteStream | Indicates that the results of a command execution should be returned as a stream. adExecuteStream can only be passed as an optional parameter to the Command Execute method. | |
| adExecuteRecord | Indicates that the CommandText is a command or stored procedure that returns a single row which should be returned as a Record object. |
❮ Referencia completa de objetos de conexión