[英]SQL Server stored procedure is inserting two records
我的存儲過程應該克隆一次該項目,但是它將創建兩個克隆的記錄。
我的C#程序有一個調用此方法的按鈕。 調試僅觸發一次並返回第二個克隆項的neweventid
protected void cloneEvent(object sender, EventArgs e)
{
using (SqlConnection myConnection = new SqlConnection(ConfigurationManager.ConnectionStrings["AppConnection"].ConnectionString))
{
using (SqlCommand myCommand = new SqlCommand("addRecycleEventAcceptedMaterialsClone"))
{
//object returnValue;
myCommand.CommandType = CommandType.StoredProcedure;
myCommand.Connection = myConnection;
myCommand.Parameters.AddWithValue("@event_id", qsEventId);
myConnection.Open();
myCommand.ExecuteNonQuery();
//returnValue = myCommand.ExecuteScalar();
NewEventID = (int)myCommand.ExecuteScalar();
}
}
Response.Redirect("eventDetail.aspx?eventid=" + NewEventID);
}
我檢查了並且沒有重復的event_id是主鍵/標識列
ALTER PROCEDURE [dbo].[addRecycleEventAcceptedMaterialsClone]
-- Add the parameters for the stored procedure here
--Pass in the original event_id
@event_id int
--@newEvent_id INT OUTPUT
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
INSERT INTO RECYCLE_EVENT (event_nm, start_dt, end_dt, start_tm, end_tm,
website_ad, address_ad, city_nm, state_cd, zip_cd,
county_id, description_ds, moreinfo_ds,
latitude, longitude, phone_nr)
SELECT
event_nm, start_dt, end_dt, start_tm, end_tm,
website_ad, address_ad, city_nm, state_cd, zip_cd,
county_id, description_ds, moreinfo_ds,
latitude, longitude, phone_nr
FROM
RECYCLE_EVENT
WHERE
event_id = @event_id
--SET @newEvent_id = IDENT_CURRENT('RECYCLE_EVENT');
--SELECT @newEvent_id = SCOPE_IDENTITY()
SELECT CAST(scope_identity() AS int);
--SELECT @newEvent_id AS newEventID
--NEW CLONED EVENT HAS BEEN ADDED AND A NEW ID (newEventID) has been generated.
--NOW INSERT all materials accepted for the @event_id and insert them into the RECYCLER_EVENT_MATERIALS_ACCEPTED table
--Give it the newEventID
INSERT INTO RECYCLER_EVENT_MATERIALS_ACCEPTED (
event_id,
material_type_id,
acceptance_cd,
residential_fl,
commercial_fl,
service_type_cd,
end_dt,
event_material_cloned_id
)
SELECT
IDENT_CURRENT('RECYCLE_EVENT'),
material_type_id,
acceptance_cd,
residential_fl,
commercial_fl,
service_type_cd,
end_dt,
event_material_id
FROM RECYCLER_EVENT_MATERIALS_ACCEPTED
where event_id = @event_id
--Grab all the records that have the old event_material_id
--insert a new row using the same county id and the new event_material_id
--eventid-76: material-id's: 18, 21, 22
--eventid-124: material-id's: 24, 25, 26, 27, 28, 29, 30, 31, 32, 33
INSERT INTO RECYCLER_EVENT_COUNTY_SERVED (
county_id,
event_material_id )
SELECT s.county_id, a.event_material_id
FROM RECYCLER_EVENT_COUNTY_SERVED s
INNER JOIN RECYCLER_EVENT_MATERIALS_ACCEPTED a ON s.event_material_id = a.event_material_cloned_id
謝謝!!
您正在代碼中執行兩次,首先是通過ExecuteNonQuery
,然后是ExecuteScalar
,因此插入兩次而不是一次。
您執行了兩次存儲過程,
myCommand.ExecuteNonQuery();
NewEventID = (int)myCommand.ExecuteScalar();
兩者都稱為插入,我將第一行注釋掉。
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