jet

问题 Althoug both Jet/OLE DB parameters are relativly well documented I fail to understand the difference between these two connection parameters: The first one: Jet OLEDB:Transaction Commit Mode (DBPROP_JETOLEDB_TXNCOMMITMODE) Indicates whether Jet writes data to disk synchronously or asynchronously when a transaction is committed. The second one: Jet OLEDB:User Commit Sync (DBPROP_JETOLEDB_USERCOMMITSYNC) Indicates whether changes that were made in transactions are written in synchronous or

问题 I am having a little bit of trouble trying to write to a .mdb database from php. The database has a table called comments and it has 3 columns "id", "comment" and "by". The code I have is this. <?php $count =0; $db_path = "newsBlog.mdb"; $odbc_con = new COM("ADODB.Connection"); $constr = "DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=" . $db_path . ";"; $odbc_con -> open($constr); $sql = "INSERT INTO [comments] VALUES (".$_POST['newsId'].",'".$_POST['comment']."', '".$_POST['by']."')"; echo

问题 I am having a little bit of trouble trying to write to a .mdb database from php. The database has a table called comments and it has 3 columns "id", "comment" and "by". The code I have is this. <?php $count =0; $db_path = "newsBlog.mdb"; $odbc_con = new COM("ADODB.Connection"); $constr = "DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=" . $db_path . ";"; $odbc_con -> open($constr); $sql = "INSERT INTO [comments] VALUES (".$_POST['newsId'].",'".$_POST['comment']."', '".$_POST['by']."')"; echo

问题 I have created an Excel Macro in which I have used Microsoft.Jet.OLEDB.4.0 to fire query on Excel work sheets. It's working perfect on my machine but my client is facing issue with it. (see the attached screen print) Here are details for my Connection Object: Dim cn Set cn = CreateObject("ADODB.Connection") With cn .Provider = "Microsoft.Jet.OLEDB.4.0" .ConnectionString = "Data Source=" & ThisWorkbook.FullName & "; Extended Properties=Excel 8.0" .Open End With Please Note: It is must for me

问题 I am having a VB.Net application. I connect it with a MS Access database. Now I have to execute a query. My query is : Update table1 set field1=replace(field1,'|','"') This query seems to work fine from the query analyzer of the Access database but when I do the same form the VB.Net code it throws me an error stating "Undefined function 'Replace' in expression" I am using OLEDB connection and command. I am using the "executenonquery" feature. Can any one help me? 回答1: Unfortunately when you

问题 Is there a way to access FlatFiles with the Microsoft.Jet.OLEDB.4.0 driver in SSIS ? The acces via the FlatFile Source is much better, it´s just about if there exists a way to do it with the Jet driver. 回答1: This seemed an interesting question so I piddled around a bit with it. Yes, you can definitely use the JET driver to read a flat file. HOW TO: Use Jet OLE DB Provider 4.0 to Connect to ISAM Databases See Open Text section By default, it expects the file to be a CSV but you can specify the

问题 I have written this query: UPDATE tbl_stock1 SET tbl_stock1.weight1 = ( select (b.weight1 - c.weight_in_gram) as temp from tbl_stock1 as b, tbl_sales_item as c where b.item_submodel_id = c.item_submodel_id and b.item_submodel_id = tbl_stock1.item_submodel_id and b.status <> 'D' and c.status <> 'D' ), tbl_stock1.qty1 = ( select (b.qty1 - c.qty) as temp1 from tbl_stock1 as b, tbl_sales_item as c where b.item_submodel_id = c.item_submodel_id and b.item_submodel_id = tbl_stock1.item_submodel_id

问题 In my application I do the follwing things: Open a Access database (.mdb) using Jet/ADO and VB6 Clear and re-fill a table with new data Close the database Start another process which does something with the new data. The problem is that sometimes the second process cannot find the new data. Sometimes the table is just empty, sometimes RecordCount > 0, but EOF is true and I cannot do a MoveFirst or MoveNext. In a nutshell: All kinds of weird things. My current workaround is adding a delay

问题 I have a VB6/Access application that occasionally encounters a problem with wrong autonumber field seed. Lets say there is a table MYTABLE with an autonumber field ID (that is also the primary key). Lets say at the moment the maximum value of ID is 1000. When the application inserts a new record (ID value is not provided explicitly), for some reason it decides that the next autonumber field value is 950 (and not 1001 as it should be) - so a primary key violation error occurs. I found a KB

问题 I have a VB6/Access application that occasionally encounters a problem with wrong autonumber field seed. Lets say there is a table MYTABLE with an autonumber field ID (that is also the primary key). Lets say at the moment the maximum value of ID is 1000. When the application inserts a new record (ID value is not provided explicitly), for some reason it decides that the next autonumber field value is 950 (and not 1001 as it should be) - so a primary key violation error occurs. I found a KB