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POWhat is the best way to fast insert SQL data and dependant rows?
 

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  1. POWhat is the best way to fast insert SQL data and dependant rows?
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    <p>I need to write some code to insert around 3 million rows of data.<br/> At the same time I need to insert the same number of companion rows.</p> <p>I.e. schema looks like this:</p> <pre><code>Item - Id - Title Property - Id - FK_Item - Value </code></pre> <p>My first attempt was something vaguely like this:</p> <pre><code>BaseDataContext db = new BaseDataContext(); foreach (var value in values) { Item i = new Item() { Title = value["title"]}; ItemProperty ip = new ItemProperty() { Item = i, Value = value["value"]}; db.Items.InsertOnSubmit(i); db.ItemProperties.InsertOnSubmit(ip); } db.SubmitChanges(); </code></pre> <p>Obviously this was terribly slow so I'm now using something like this:</p> <pre><code>BaseDataContext db = new BaseDataContext(); DataTable dt = new DataTable("Item"); dt.Columns.Add("Title", typeof(string)); foreach (var value in values) { DataRow item = dt.NewRow(); item["Title"] = value["title"]; dt.Rows.Add(item); } using (System.Data.SqlClient.SqlBulkCopy sb = new System.Data.SqlClient.SqlBulkCopy(db.Connection.ConnectionString)) { sb.DestinationTableName = "dbo.Item"; sb.ColumnMappings.Add(new SqlBulkCopyColumnMapping("Title", "Title")); sb.WriteToServer(dt); } </code></pre> <p>But this doesn't allow me to add the corresponding 'Property' rows.</p> <p>I'm thinking the best solution might be to add a Stored Procedure like <a href="https://stackoverflow.com/questions/810962/getting-new-ids-after-a-bulk-insert-in-sql-server-2008/810973#810973">this one</a> that generically lets me do a bulk insert (or at least multiple inserts, but I can probably disable logging in the stored procedure somehow for performance) and then returns the corresponding ids.</p> <p>Can anyone think of a better (i.e. more succinct, near equal performance) solution?</p>
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