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Architect_Programmer_Code Agriculture Network»Architect › Programming › .Net/C # › Linq to SQL efficiency issues for deleting or emptying tables
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[Source] Linq to SQL efficiency issues for deleting or emptying tables

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Posted on 8/1/2015 3:32:27 PM | | |

Today in the project you need to delete all the data in a table, or delete all the data id="XXX"

Use code like this:

                MAList = ctx. T_Info_MAs.Where(c => c.StockCode == stockcode). ToList();
                ctx. T_Info_MAs.DeleteAllOnSubmit(MAList);
                ctx. SubmitChanges();



It was found that the deletion speed was extremely slow, and there was a lot of useless work (taking out the list of elements that needed to be deleted), which was unbearable at 300,000 in terms of data volume

Therefore, the following methods are adopted:

ctx. ExecuteCommand("DELETE FROM T_Info_MA WHERE [STOCKCODE]=" + stockcode);


If you need to clear a table, you can use it directly:

ctx. ExecuteCommand("TRUNCATE TABLE T_Info_MA");




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