ADO CommandType- eigenschap
❮ Voltooi de opdrachtobjectreferentie
Met de eigenschap CommandType wordt een CommandTypeEnum -waarde ingesteld of geretourneerd die het type van het Command-object definieert. Standaard is adCmdUnknown.
Als u het type niet opgeeft, moet ADO contact opnemen met de provider om het type van de opdracht te bepalen. Als u het type echter opgeeft, kan ADO de opdracht sneller verwerken.
Syntaxis
objcommand.CommandType
Voorbeeld
<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open "c:/webdata/northwind.mdb"
set comm=Server.CreateObject("ADODB.Command")
comm.CommandText="orders"
comm.CommandType=adCmdTable
response.write(comm.CommandType)
conn.close
%>
CommandTypeEnum-waarden
| 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 | Default. 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. |
❮ Voltooi de opdrachtobjectreferentie