Populate the dataTable with some values here… Define a DataTable that matches the schema of the user-defined table type.ĭ("Index", typeof(int)) ĭ("ImportantDate", typeof(DateTime)) ĭ("SomeText", typeof(string)) Most, if not all, ORMs support TVPs, but we're just going to use raw ADO.NET here. Here, we're simply copying all the data from the TVP into a target SQL table. Note that READONLY must be specified, which means you cannot modify the data in that table parameter in the routine, so INSERTs/UPDATEs/DELETEs are not allowed on it. The user-defined type is used as the data type for a parameter-in this case, a stored procedure, but it could equally be an ad hoc, parameterized SQL statement. The user-defined table type defines the structure of the data, which then allows you to pass sets of data into/around your SQL statements and routines. Example Usage Step 1: Create a User-Defined Table Type Let's cover a simple scenario that will form the basis of the load test comparison later in this blog post. TVPs enable you to pass in multiple rows of data via a single table-typed parameter to then work with. TVPs are a powerful feature that provides the ability to more easily perform set-based operations. TVPs were introduced in SQL Server 2008 and provide a means to pass a structured data set into a SQL statement, stored procedure, or function. How do they perform in a side-by-side comparison for bulk loading?.Do both the TVP approach and SqlBulkCopy support the same use cases?.We're going to look at two specific things: Both are particularly useful approaches to know about. I was deliberately vague regarding this approach in my previous blog post because it deserves a deeper dive and a comparison to SqlBulkCopy. The exception is Table-Valued Parameters (TVPs).
NET that I've seen over the years that, perhaps with the exception of one approach, have been related to performance issues. I touched on some other common approaches to bulk loading data into SQL Server from.
NET developer since I first discovered it in 2010. In my previous blog post, I talked about SqlBulkCopy and how it's been a useful part of my toolbelt as a.
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