Vlastnost ADO CommandType
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Vlastnost CommandType nastavuje nebo vrací hodnotu CommandTypeEnum , která definuje typ objektu Command. Výchozí hodnota je adCmdUnknown.
Pokud nezadáte typ, ADO bude muset kontaktovat poskytovatele, aby určil typ příkazu. Pokud však zadáte typ, ADO bude moci zpracovat příkaz rychleji.
Syntax
objcommand.CommandType
Příklad
<%
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 hodnoty
| 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. |
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