ms-jet-ace

Does ACE OLEDB drivers have any known issues with larger files? I am using the below code to retrieve the worksheets in a 400Mb xls file public string[] GetWorkSheets() { var connectionString = "Provider=Microsoft.ACE.OleDb.12.0; data source=c:\filepath\filename.xls; Extended Properties=\"Excel 8.0;IMEX=1;HDR=YES;\""; DataTable dataTable; using (OleDbConnection connection = new OleDbConnection(connectionString)) { connection.Open();//Exception thrown here for large files dataTable = connection.GetSchema("Tables"); } int lenght = dataTable.Rows.Count; string[] worksheets = new string[lenght];

I designed a query in SQL View using MS Access: select floor(num1) from t1; When I run it, I get "undefined function floor". I get similar errors for Ceil , Mod , Power , Sign , Sqrt , Trunc , and initcap functions. Does the Access database engine's SQL syntax have equivalent functions? David-W-Fenton Replace Floor() with Int(). I learned this by searching in the Access help files, in this case, hitting F1 while in the query designer, and searching for "functions." That took me to a help topic comparing VBA and T-SQL functions. You should probably have a look at the Access database engine SQL

I have built a small WPF app that will read in XLS or XLSX files and display the contents in a datagrid. I have the XLS side of things working by using the Microsoft.Jet.OLEDB.4.0 provider. I am struggling with the XLSX side of things. I am running Windows 7 (64-bit) and have Office 2010 (64-bit) installed on my machine. I see the version 14 and 12 versions of the OLEDB in my ODBC connections. When I run my connection string it returns an error. I have read through many of the posts without any successful answers, many pointing to the version the app is running which is x86. I have tried both

I have 2 tables AP and INV where both have the columns [PROJECT] and [Value]. I want a query to return something like this : PROJECT | SUM_AP | SUM_INV I came up with the code below but it's returning the wrong results ( sum is wrong ). SELECT AP.[PROJECT], SUM(AP.Value) AS SUM_AP, SUM(INV.Value) AS SUM_INV FROM AP INNER JOIN INV ON (AP.[PROJECT] =INV.[PROJECT]) WHERE AP.[PROJECT] = 'XXXXX' GROUP BY AP.[PROJECT] The results from your query are wrong because the values you are trying to summarize are being grouped, which causes duplicate values to be included in the SUM . You could solve it

We know the MS Access database engine is 'throttled' to allow a maximum file size of 2GB (or perhaps internally wired to be limited to fewer than some power of 2 of 4KB data pages). But what does this mean in practical terms? To help me measure this, can you tell me the maximum number of rows that can be inserted into a MS Access database engine table? To satisfy the definition of a table, all rows must be unique, therefore a unique constraint (e.g. PRIMARY KEY , UNIQUE , CHECK , Data Macro, etc) is a requirement. EDIT: I realize there is a theoretical limit but what I am interested in is the