How Do I Use This Sql Command In Asp.Net To Update Table

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how to use this code in asp.net to update a table from another one

SQL

UPDATE t1 SET t1.[name] = t2.[name], t1.address = t2.address, t1.[date] = t2.[date]
FROM table1 as t1 INNER JOIN table2 AS t2 ON t1.billno = t2.billno
WHERE t1.billno Like 'A100%'

plzz help me with this

Posted 22-Jul-14 20:49pm

10923679

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10923679 23-Jul-14 2:52am

using this code .. how will i will be able to update the table ASP.Net

2 solutions

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Prakriti Goyal · Answer 1 · 2014-07-22T21:38:00

In connectStr, pass your Connection String.

string connectStr = "";//pass your connection string
string updateQuery = "UPDATE T1
SET T1.name = T2.name, T1.address_ = T2.address_
FROM TABLE1 T1
INNER JOIN TABLE2 T2
ON T1.billNo = T2.billNo
WHERE T2.billNo LIKE 'A100%'";

SqlConnection conn = new SqlConnection(connectStr);

SqlCommand cmd = new SqlCommand(updateQuery,conn);
conn.Open();
int result = cmd.ExecuteNonQuery();
conn.Close();

if(result>0)
{
   ClientScript.RegisterClientScriptBlock(this.GetType(), "alertbox", "<script language='javascript'>alert('Updated');</script>");
}

Hope this solves your problem!! :)

Dilan Shaminda · Answer 2 · 2014-07-22T21:41:00

Solution 2

Go through this article

http://www.onlinebuff.com/article_step-by-step-select-insert-update-and-delete-using-aspnet-c-and-adonet_32.html[^]

Posted 22-Jul-14 21:41pm

Dilan Shaminda

Comments

10923679 23-Jul-14 5:59am

well this is okay.

but i need to update from one table to another which having common fields .

Prakriti Goyal 23-Jul-14 9:09am

Do you mean that you need to insert records in an existing table from another existing table?

10923679 23-Jul-14 9:24am

yes right.. from existing table from another existing table ..

10923679 23-Jul-14 9:30am

for eg.. table 1
i have some empty fields which are null.
i need to update those null values from another existing table 2.
comparing few common fields like employID.

Dilan Shaminda 23-Jul-14 14:03pm

Hi, in your question you have asked "How do i use this Sql Command in Asp.Net to update Table" So that is why i have answered to refer that tutorial. I have checked this below query with two data tables. it updates even in nulls values with given conditions from TEST2 table to TEST1

UPDATE TEST1
SET TEST1.name = TEST2.name, TEST1.address_ = TEST2.address_
FROM TEST1
INNER JOIN TEST2
ON TEST1.billNo = TEST2.billNo
WHERE TEST2.billNo = 1

10923679 24-Jul-14 2:46am

thank you

Prakriti Goyal 24-Jul-14 0:25am

UPDATE T1
SET T1.name = T2.name, T1.address_ = T2.address_
FROM TABLE1 T1
INNER JOIN TABLE2 T2
ON T1.billNo = T2.billNo
WHERE T2.billNo LIKE A100%

Hope this helps you out