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How to Optimize Bulk Data Loading into MySQL from DataTable with MySqlBulkLoader?

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Release: 2024-10-24 06:12:30
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How to Optimize Bulk Data Loading into MySQL from DataTable with MySqlBulkLoader?

Bulk Copy a DataTable into MySQL with Performance Optimization

Question:

Previously using Microsoft SQL Server, bulk data insertion was seamlessly executed with the SqlBulkCopy class. How can a similar functionality be achieved in MySQL, considering performance concerns?

Answer:

Avoid Assumptions:

Emphasizing the significance of evidence-based decision-making, the response debunks the assumption that writing a DataTable to a CSV file prior to bulk loading into MySQL would result in poor performance.

MySqlBulkLoader Outperforms:

In a series of tests, the MySqlBulkLoader class significantly outperformed standard MySQL data adapter updates within a transaction, completing the insertion of 100,000 rows in merely 5-6 seconds.

Code Solution:

To utilize the MySqlBulkLoader effectively:

<code class="csharp">// Create a temporary CSV file
string tempCsvFileSpec = @"C:\Users\Gord\Desktop\dump.csv";
using (StreamWriter writer = new StreamWriter(tempCsvFileSpec))
{
    Rfc4180Writer.WriteDataTable(rawData, writer, false);
}

// Perform bulk loading with MySqlBulkLoader
var msbl = new MySqlBulkLoader(conn);
msbl.TableName = "testtable";
msbl.FileName = tempCsvFileSpec;
msbl.FieldTerminator = ",";
msbl.FieldQuotationCharacter = '"';
msbl.Load();

// Cleanup
System.IO.File.Delete(tempCsvFileSpec);</code>
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