使用SqlBulkCopy将F#DataTable转换为SQL [英] F# DataTable to SQL using SqlBulkCopy

问题描述

我有一个F#程序，该程序创建一个DataTable，将其填充为一行，然后使用批量插入(SqlBulkCopy)将数据写入SQL Server.

I have an F# program that creates a DataTable, populates it with one row and then writes the data to SQL Server using bulk insert (SqlBulkCopy).

尽管它可以正常工作，但我真的无法弄清楚如何包含一个循环，该循环将生成许多列表项/数据行，然后可以在一条语句中插入它们，而不必在一行中批量插入一行.时间(当前情况)

Although it's working, I can't really figure out how to include a loop that will generate a number of list items / data rows which I can then insert in one statement, rather than having to bulk insert a single row at a time (which is the current case)

这是我的代码:

open System
open System.Data
open System.Data.SqlClient

let lcpSqlConnection = new SqlConnection("<my-connection-string>")
lcpSqlConnection.Open()
let bulkLoadEsgData (conn:SqlConnection) (esgTable: list<byte * byte * int * byte * byte * single>) =
    use sbc = new SqlBulkCopy(conn, SqlBulkCopyOptions.TableLock, null, BatchSize=10000, BulkCopyTimeout=1200, DestinationTableName="dbo.myTable")
    sbc.WriteToServer(
        let dt = new DataTable()
        ["Measure", typeof<byte>
        "Identifier", typeof<byte>
        "Simulation", typeof<int>
        "Time", typeof<byte>
        "Duration", typeof<byte>
         "Result", typeof<single>]
        |> List.iter (dt.Columns.Add>>ignore)

        for esgData in esgTable do
            let esg_measure, identifier, simulation, time, duration, result = esgData
            let dr = dt.NewRow()
            dr.["Measure"] <- esg_measure
            dr.["Identifier"] <- identifier
            dr.["Simulation"] <- simulation
            dr.["Time"] <- time
            dr.["Duration"] <- duration
            dr.["Result"] <- result
            dt.Rows.Add(dr)

        dt)


let myList: list<byte * byte * int * byte * byte * single> = [(byte)1,(byte)1,1, (byte)1,(byte)1,(single)0.111]

// Call method to bulk insert data row
bulkLoadEsgData lcpSqlConnection myList

lcpSqlConnection.Close()

我认为我需要在bulkLoadEsgData方法内部包括一个for循环，以使代码高效运行.除了我不知道该做什么/在哪里写

I think I need to include a for loop inside the bulkLoadEsgData method, to make the code run efficiently. Except I've no idea what to do / where to write that

推荐答案

我设法解决了

sbc.WriteToServer(
    let dt = new DataTable()
    dt.Columns.Add("Measure", typeof<byte>) |> ignore
    dt.Columns.Add("Identifier", typeof<byte>) |> ignore
    dt.Columns.Add("Simulation", typeof<int>) |> ignore
    dt.Columns.Add("Time", typeof<byte>) |> ignore
    dt.Columns.Add("Duration", typeof<byte>) |> ignore
    dt.Columns.Add("Result", typeof<single>) |> ignore

    for i= 1 to 100 do
        dt.Rows.Add(i, i, i, i, i, (float)i*0.11) |> ignore

    dt)

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