- Ado.net driver for mysql download update#
- Ado.net driver for mysql download driver#
- Ado.net driver for mysql download code#
Because the implicit connection was not pooled in the OLE DB connection pool this would cause additional overhead.
Ado.net driver for mysql download code#
In prior versions of the OLE DB provider, this code would cause an implicit connection to be created on the second execution because only one active set of results could be opened per a single connection. Set recordset2 = con.Execute("SELECT * FROM Table2", recordsaffected, adCmdText) Set recordset1 = con.Execute("SELECT * FROM Table1", recordsaffected, adCmdText)
Ado.net driver for mysql download driver#
In this example, the connection string is constructed to enable MARS through the OLE DB Driver for SQL Server, and then two recordset objects are created to execute using the same connection. ' Insert the new value back into the database.Ĭmd.CommandText = "UPDATE dbo.Points SET Pnt = '" + strNewUDT + _ StrNewUDT = LTrim(Str(Int(aryTempUDT(0)) + i)) + "," + _ ' Do something with the UDT by adding i to each point. Dim con As New ADODB.ConnectionĬmd.CommandText = "SELECT ID, Pnt FROM ()" This example assumes that the Point UDT has already been registered in the database. In this example, a Command object is used to execute a SQL query that returns a UDT, the UDT data is updated, and then the new data is inserted back into the database. Recordset filtering is not supported with XML columns.
SXMLResult = rst.Fields("AdditionalContactInfo").Value
& "WHERE AdditionalContactInfo IS NOT NULL" Rst.Source = "SELECT AdditionalContactInfo FROM Person.Contact " _ In this example, a recordset is used to retrieve and display the data from an XML column in the SQL Server AdventureWorks sample database. The following sections provide examples of how you can use ADO with the OLE DB Driver for SQL Server.
The following is an example of establishing an ADO connection string that is fully enabled to work with OLE DB Driver for SQL Server, including the enabling of the MARS feature: Dim con As New ADODB.ConnectionĬon.ConnectionString = "Provider=MSOLEDBSQL " _ To enable the usage of OLE DB Driver for SQL Server, ADO applications will need to implement the following keywords in their connection strings:įor more information about the ADO connections string keywords supported in OLE DB Driver for SQL Server, see Using Connection String Keywords with OLE DB Driver for SQL Server. Enabling OLE DB Driver for SQL Server from ADO However, if you use the OLE DB Driver for SQL Server (MSOLEDBSQL) instead of SQLOLEDB, you need to make sure to set the DataTypeCompatibility keyword to "80" so that the new data types will map correctly to the ADO data types. XML columns are returned as adLongVarChar, and UDT columns are returned as adVarBinary. The new larger varchar(max), nvarchar(max), and varbinary(max) data types are returned as the ADO types adLongVarChar, adLongVarWChar and adLongVarBinary respectively.
Ado.net driver for mysql download update#
In addition, the OLE DB Driver for SQL Server also defines a new connection string keyword named DataTypeCompatibility that is set in the connection string.Įxisting ADO applications can access and update XML, UDT, and large value text and binary field values using the SQLOLEDB provider. OLE DB Driver for SQL Server adds the SSPROP_INIT_DATATYPECOMPATIBILITY initialization property to the DBPROPSET_SQLSERVERDBINIT property set for use by ADO applications so that the new data types are exposed in a way compatible with ADO. These enhancements also exploit enhancements to the varchar, nvarchar, and varbinary data types. These enhancements allow ADO applications to use newer SQL Server features and to consume two data types introduced in SQL Server 2005 (9.x): xml and udt. To enable ADO to use new features of recent versions of SQL Server, some enhancements have been made to the OLE DB Driver for SQL Server which extends the core features of OLE DB.
In order to take advantage of new features introduced in SQL Server 2005 (9.x) such as multiple active result sets (MARS), query notifications, user-defined types (UDTs), or the new xml data type, existing applications that use ActiveX Data Objects (ADO) should use the OLE DB Driver for SQL Server as their data access provider. Applies to: SQL Server (all supported versions) Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW)
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