oledb

问题 I'm using the Visual FoxPro OLE DB provider to query a VFP DB and I'm getting: System.Data.OleDb.OleDbException 'Operator/operand type mismatch` What could I be doing wrong? 回答1: In my where clause I had an int on one side and a char(15) on the other side Table Schema id int Query SELECT * FROM [some-table] WHERE id = 'some string' 回答2: In my case to avoid such kind of inconveniences I do the following I hope it works for you: var_name = iif(vartype(var_name)=='N',var_name,Val(var_name)) so

问题 I'm using the Visual FoxPro OLE DB provider to query a VFP DB and I'm getting: System.Data.OleDb.OleDbException 'Operator/operand type mismatch` What could I be doing wrong? 回答1: In my where clause I had an int on one side and a char(15) on the other side Table Schema id int Query SELECT * FROM [some-table] WHERE id = 'some string' 回答2: In my case to avoid such kind of inconveniences I do the following I hope it works for you: var_name = iif(vartype(var_name)=='N',var_name,Val(var_name)) so

问题 I am getting error while reading excel file with MVC website on client machine 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine Its perfectly working with localhost suggest me something 回答1: “The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine” Fix: Install the 2007 Office System Driver: Data Connectivity Components For more information, see SQL SERVER – FIX – Export Error – ‘Microsoft.ACE.OLEDB.12.0’ provider is not registered on the local

问题 I am trying to connect to an iHistorian Database. This database is a product of GE and it records process control information. Anyway, this database is configured with OLE DB drivers. I am curious if there is a way to connect to this database with R . Currently, R has a package called RODBC , but this package only connects to ODBC . Any suggestions would be helpful. Thanks 来源： https://stackoverflow.com/questions/17330084/ole-db-database-connectivity-with-r

问题 I need to import some datafrom a Excel worksheet but the OleDbConnection is using the 32bit version, so it cant find the provider. I already imported using the 64bit wizzard and everything is working fine. Already tried using the following connection string: Provider=Microsoft.ACE.OLEDB.12.0; Public Shared Function ExcelToSqlServer() As Integer Dim ds As New DataSet Dim da As New OleDbDataAdapter Dim conn As New OleDbConnection Dim cnn As New SqlConnection Dim sqlBC As SqlBulkCopy Dim

问题 This question already has answers here : SQL multiple join statement (3 answers) Closed 2 years ago . I'm trying to make an SQL query with an OleDbCommand into an Access database (.accdb). While this command works fine (in a OleDbCommand.ExecuteReader() ): string command = "SELECT cred.* " + "FROM TB_CREDENTIALS cred " + "INNER JOIN TB_REL_USERS_CREDENTIALS rel ON cred.CRED_ID = rel.REL_USR_CRED_CRED_ID "; This other doesn't, and I can't understand why (all examples I see around use the exact

问题 This question already has answers here : SQL multiple join statement (3 answers) Closed 2 years ago . I'm trying to make an SQL query with an OleDbCommand into an Access database (.accdb). While this command works fine (in a OleDbCommand.ExecuteReader() ): string command = "SELECT cred.* " + "FROM TB_CREDENTIALS cred " + "INNER JOIN TB_REL_USERS_CREDENTIALS rel ON cred.CRED_ID = rel.REL_USR_CRED_CRED_ID "; This other doesn't, and I can't understand why (all examples I see around use the exact

问题 I have a working code that integrates with Access runtime 2013 (32bit) (reading an Excel file). I removed the 2013 version, and installed the Access runtime 2016 version instead. This is the connection string I'm using (that worked with 2013): Provider=Microsoft.ACE.OLEDB.15.0;Data Source=C:\\Users\\myuser\\Desktop//District.xls;Extended Properties=\"Excel 12.0;HDR=YES;\"; Also, using Microsoft.Office.Interop.Excel version 15.0.0.0, Runtime Version v2.0.50727 When I'm running the code I'm

问题 I have an ASP.NET MVC application which is trying to open below OLE DB connection: string conString = @"Provider=Advantage OLE DB Provider;Data Source=" + dbfFilePath + ";Extended Properties=dBASE IV;"; using (dBaseConnection = new OleDbConnection(conString)) { dBaseConnection.Open(); // Some stuff } I have installed below package from here. I am using this provider in order to access a dbf file (specified on the dbfFilePath variable) and then later add some information into it. When I

问题 I have an ASP.NET MVC application which is trying to open below OLE DB connection: string conString = @"Provider=Advantage OLE DB Provider;Data Source=" + dbfFilePath + ";Extended Properties=dBASE IV;"; using (dBaseConnection = new OleDbConnection(conString)) { dBaseConnection.Open(); // Some stuff } I have installed below package from here. I am using this provider in order to access a dbf file (specified on the dbfFilePath variable) and then later add some information into it. When I