Getting Data between Excel and SQL Server using ODBCWhy Use ODBC It is reasonably easy to insert data from Excel into SQL Server, or the reverse, from any other ODBC database to any other, using Power. Shell. The most important direction is from Excel to SQL Server, of course. It is quicker than automating Excel and you can do it without requiring a copy of Excel. It is neater than SSIS too, and more versatile. The most important thing, though, is that you can aggregate before you send the data. It is possible to do a lot of filtering and aggregation of data before it ever gets to SQL Server, since you can turn an existing Excel Workbook into a poor mans relational database, or even create one. This article will aim to show how this is done. I always feel slightly awkward in talking about ODBC. It is a Once and Future technology, developed before its time, but now showing its value for processing large volumes of data, despite its quirks, poor documentation and lackluster support. If you use the ODBC driver, then your Excel workbook becomes a little SQL based relational database. Worksheets, or areas within worksheets, become tables. There are some features missing, of course, but you can do joins between tables, filter rows to taste, do aggregations and some string manipulations. This means that you need pull far less data into SQL because you can do a lot of selection and pre processing before the data gets anywhere near SQL server. If, for example, you only need the total, count, and variance of a days readings, then why on earth would you want to import more than those aggregated figures Even if you do, these aggregations, performed on the original data, can be used as a reconciliation check that youve gulped all the data into their final destination without error. I also prefer to use ODBC and the sequential data reader to read data from Excel, or any other ODBC source, because it is fast and I like to use the bulk copy library to insert ODBC reader data into a SQL Server table because it is extremely fast, so well use that. When you have a large number of big spreadsheets to insert as a chore, then speed matters. The ODBC Excel driver ACEODBC was conceived as a way of making it as easy to connect to a particular datasource such a relational database, text file, data document e. XML, web based data or spreadsheet. Currently, the state of the art in ODBC for Access and Excel is the Microsoft Access Database Engine 2. 10 reasons to migrate to MariaDB if still using MySQL The original MySQL was created by a FinnishSwedish company, MySQL AB, founded by David Axmark, Allan Larsson. The ECBA course from Koenig enables participants to gain professional level understanding of the business analysis field and choose it as a career path. Redistributable which can be downloaded here. This includes the more popular OLEDB drivers which run well in Power. Shell too. These drivers enable you to access a range of data files via SQL as if they were a relational database. Formats include Access, CSV, delimited, DBase and Excel For developing on a general purpose 6.
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