How to run SQL query concurrently in one by one - sql

Question

I am developing one page like Daily SMS Log for retrieving info regarding SMS run in background. I have this SQL code:
First Section
--SELECT ROW_NUMBER() OVER (ORDER BY RowId DESC)AS RowNumber,p.CampaignName,
-- p.MobileNo,
-- p.Message,
-- p.CharCount,
-- p.strSenderID as Sender,
-- u.strUserName as UserId,
-- ds.strDR as DeliveryStatus,
-- ds.strDiscription as Original_DRStatus,
-- m.strMessageType as MessageType,
-- CONVERT(varchar(20) , p.ReceiveTime) as ReceiveTime,
-- CONVERT(varchar(20) , p.SendTime) as SendTime,
-- CONVERT(varchar(20) , p.DoneTime) as DoneTime,
-- p.RootId as Root,
-- sp.ProviderName,
-- (CASE intAccountType WHEN 1 THEN 'Promotional' WHEN 2 THEN 'Transactional' WHEN 3 THEN 'OptIn' END) as AccountType
-- INTO #Results3
-- FROM NEWSMSLOG_2019_01..LOG_010119 p
-- INNER JOIN deliverstatus ds ON p.DeliveryStatus = ds.intDR_status inner join users u on u.id = p.userid
-- left join senderids b on b.id = p.senderid
-- left join messagetype m on m.intcode = p.messagetype
-- left join smppproviders sp on sp.RootId=p.RootId
-- where 1=1
Second Section
-- SELECT *
-- FROM #Results3
-- SELECT
-- CampaignName,MobileNo,Message,CharCount,Sender,UserId,DeliveryStatus,
-- Original_DRStatus,MessageType,ReceiveTime,SendTime,DoneTime,Root,ProviderName,AccountType
-- FROM #Results3
-- WHERE RowNumber BETWEEN('1' -1) * '109299' + 1 AND((('1' -1) * '109299' + 1) + '109299') - 1
Here when I uncomment the first line to where 1=1 then rows retrieved with success. And after that commenting up those line I uncomment second section then result shows bunch of rows. Now it's works fine in Management Studio.
Now I just want this result to grid view and here is my code:
protected void Get_Data()
{
try
{
string str = "";
DataTable dt = new DataTable();
str = "SELECT ROW_NUMBER() OVER (ORDER BY RowId DESC)AS RowNumber,p.CampaignName,";
str += "p.MobileNo,";
str += "p.Message,";
str += "p.CharCount,";
str += "p.strSenderID as Sender,";
str += "u.strUserName as UserId,";
str += "ds.strDR as DeliveryStatus,";
str += "ds.strDiscription as Original_DRStatus,";
str += "m.strMessageType as MessageType,";
str += "CONVERT(varchar(20), p.ReceiveTime) as ReceiveTime,";
str += "CONVERT(varchar(20), p.SendTime) as SendTime,";
str += "CONVERT(varchar(20), p.DoneTime) as DoneTime,";
str += "p.RootId as Root,";
str += "sp.ProviderName,";
str += "(CASE intAccountType WHEN 1 THEN 'Promotional' WHEN 2 THEN 'Transactional' WHEN 3 THEN 'OptIn' END) as AccountType";
str += " INTO #Results3 ";
str += " FROM NEWSMSLOG_2019_01..LOG_010119 p ";
str += " INNER JOIN deliverstatus ds ON p.DeliveryStatus = ds.intDR_status inner join users u on u.id = p.userid";
str += " left join senderids b on b.id = p.senderid";
str += " left join messagetype m on m.intcode = p.messagetype";
str += " left join smppproviders sp on sp.RootId = p.RootId";
str += " where 1 = 1 ";
if(ddl_users.SelectedItem.Text.ToString() == "All")
{
str += string.Empty;
}
else
{
str += " and p.userid = ' + CONVERT(varchar(5),"+ Convert.ToInt32(ddl_users.SelectedValue.ToString())+") + '";
}
if (ddl_sender.SelectedItem.Text.ToString() == "All")
{
str += string.Empty;
}
else
{
str += " and p.Senderid = '+CONVERT(varchar(10),"+Convert.ToInt32(ddl_sender.SelectedValue.ToString())+")+'";
}
if(!string.IsNullOrEmpty(txt_mobileno.Text.Trim()))
{
str += " and p.MobileNo like '' % '"+txt_mobileno.Text.Trim()+"' % ''";
}
else
{
str += string.Empty;
}
if(ddl_delevery.SelectedItem.Text.ToString() =="All")
{
str += string.Empty;
}
else
{
str += " and p.Deliverystatus in ('+CONVERT(varchar(10),"+Convert.ToInt32(ddl_sender.SelectedValue.ToString())+")+')'";
}
if(!string.IsNullOrEmpty(txt_CompaignName.Text.Trim()))
{
str += " and p.CampaignName like ''%'"+txt_CompaignName.Text.Trim()+"'%'' '";
}
else
{
str += string.Empty;
}
if(ddl_account.SelectedItem.Text.ToString() == "All")
{
str += string.Empty;
}
else
{
str += " and p.accounttype = '+CONVERT(varchar(2),"+Convert.ToInt32(ddl_account.SelectedValue.ToString())+")+'";
}
obj.Execute_Query(str);
string str1 = " SELECT * FROM #Results3";
str1 += " SELECT";
str1 += " CampaignName,MobileNo,Message,CharCount,Sender,UserId,DeliveryStatus,";
str1 += "Original_DRStatus,MessageType,ReceiveTime,SendTime,DoneTime,Root,ProviderName,AccountType";
str1 += " FROM #Results3";
str1 += " WHERE RowNumber BETWEEN('1' - 1) * '500' + 1 AND((('1' - 1) * '500' + 1) + '500') - 1";
str1 += " DROP TABLE #Results3";
dt = obj.Get_Data_Table_From_Str(str1);
ViewState["data"] = dt;
egrd.DataSource = dt;
egrd.DataBind();
ViewState["data"] = dt;
}
catch (Exception ex)
{
CommonLogic.SendMailOnError(ex);
}
}
But I have no records found in grid view. What's problem is that?
--------------------------Updated--------------------------------------------
namespace BulkSMSSystem.App_Code.DAL
{
public class DAL_General : DataAccess
{
public DataTable Get_Data_Table_From_Str(string str, string cnn_type = "NEWBULKSMS")
{
DataTable dt = new DataTable();
GetConnection(cnn_type);
dt = GetDataTableByQuery(str);
return dt;
}
public void Execute_Query(string str, string cnn_type = "NEWBULKSMS")
{
GetConnection(cnn_type);
GetExecuteNonQueryByStr(str);
}
public object Execute_Scalar(string str, string cnn_type = "NEWBULKSMS")
{
GetConnection(cnn_type);
object rtn = GetScalarOfStr(str);
return rtn;
}
---------------------------Updated 2-------------------------------------
public DataTable GetDataTableByQuery(string str_query)
{
try
{
mobj_SqlCommand.CommandText = str_query;
mobj_SqlCommand.CommandTimeout = mint_CommandTimeout;
mobj_SqlCommand.CommandType = CommandType.Text;
//mobj_SqlConnection.Open();
SqlDataAdapter adpt = new SqlDataAdapter(mobj_SqlCommand);
DataTable ds = new DataTable();
adpt.Fill(ds);
return ds;
}
catch (Exception ex)
{
throw ex;
}
finally
{
CloseConnection();
}
}
public void GetExecuteNonQueryByStr(string query_str)
{
try
{
mobj_SqlCommand.CommandType = CommandType.Text;
mobj_SqlCommand.CommandText = query_str;
mobj_SqlCommand.Connection = mobj_SqlConnection;
mobj_SqlCommand.ExecuteNonQuery();
}
catch (Exception ex)
{
throw ex;
CloseConnection();
}
}
--------------------------Updated 3-----------------------------------
protected void GetConnection(string cnn_db = "NEWBULKSMS")
{
try
{
string Cnn_Str = "";
string ServerName = "SHREE-PC";
string DBUserName = string.Empty;
string DBPassword = string.Empty;
DBPassword += "c#" + Convert.ToChar(49);
string Database = cnn_db;
Cnn_Str = "Data Source=" + ServerName + "; UID=" + DBUserName + "; PWD=" + DBPassword + "; Database=" + Database+";Integrated Security = True";
//Cnn_Str = "Data Source=SHREE-PC;Initial Catalog=Project_DB_MNG;Integrated Security=True";
mstr_ConnectionString = Cnn_Str;
mobj_SqlConnection = new SqlConnection(mstr_ConnectionString);
mobj_SqlCommand = new SqlCommand();
mobj_SqlCommand.CommandTimeout = mint_CommandTimeout;
mobj_SqlCommand.CommandType = CommandType.StoredProcedure;
mobj_SqlCommand.Connection = mobj_SqlConnection;
mobj_SqlConnection.Open();
}
catch (Exception ex)
{
throw new Exception("Error initializing data class." + Environment.NewLine + ex.Message);
}
}
--------------------------Upadted 4--------------------------------------

Answer 1

As you are using temp table with one # sign it means that a temporary table will exists only during your session. However, if you create a temporary table with ##, then every user will be able to use that one, and none other can create a temp table with the same name, but it will be deleted when the owner session expired or disconnect.
So try to use in your code:
...
str += " INTO ##Results3 ";
...
And:
string str1 = " SELECT * FROM ##Results3";
str1 += " SELECT";
str1 += " CampaignName,MobileNo,Message,CharCount,Sender,UserId,DeliveryStatus,";
str1 += "Original_DRStatus,MessageType,ReceiveTime,SendTime,DoneTime,Root,ProviderName
,AccountType";
str1 += " FROM ##Results3";
str1 += " WHERE RowNumber BETWEEN('1' - 1) * '500' + 1 AND((('1' - 1) * '500'
+ 1) + '500') - 1";
str1 += " DROP TABLE ##Results3";