insert null value RSS

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  sheraz_aries

  Member

  283 Points

  642 Posts

  insert null value

  Aug 05, 2010 02:07 AM|LINK

  How can i insert NULL value in db column from vb.net code behind sql query?

  myCommand.CommandText = "UPDATE db_admin.tblContent " _
              & "SET Headline='" & valHead & "', " _
              & "Standfirst='" & valStandfirst & "'," _
              & "Thumbnail='" & valThumbnail & "'," _
              & "MainImage='" & valMainImage & "'," _
              & "MetaDescription='" & valMetaDescription & "'," _
              & "MetaKeyWords='" & valMetaKeyWords & "'," _
              & "Article='" & valArticle & "'," _
              & "URLTitle='NULL' " _
              & "WHERE ContentID = " & qID
  
  
  
  
        myCommand.CommandText = "UPDATE db_admin.tblContent " _
              & "SET Headline='" & valHead & "', " _
              & "Standfirst='" & valStandfirst & "'," _
              & "Thumbnail='" & valThumbnail & "'," _
              & "MainImage='" & valMainImage & "'," _
              & "MetaDescription='" & valMetaDescription & "'," _
              & "MetaKeyWords='" & valMetaKeyWords & "'," _
              & "Article='" & valArticle & "'," _
              & "URLTitle='' " _
              & "WHERE ContentID = " & qID

  
  I tried the queries above but one leave the cell empty while other leave the cell will string 'NULL' but its not the null you get when you manually type NULL by opening the table in edit mode.
  

  
  

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  sansan

  All-Star

  53942 Points

  8147 Posts

  Re: insert null value

  Aug 05, 2010 02:18 AM|LINK

  sheraz_aries

  & "URLTitle='NULL' " _  

  Insert NULL instead of 'NULL'

  That should insert NULL value into the column
  

  
  

  Santhosh
  • Marked as answer by sheraz_aries on Aug 05, 2010 02:31 AM
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  ketan_al

  Contributor

  6850 Points

  1143 Posts

  Re: insert null value

  Aug 05, 2010 02:20 AM|LINK

  Hi,

  Yiu can use Nothing to pass null value. Please refer following

  myCommand.CommandText = "UPDATE db_admin.tblContent " _
  & "SET Headline='" & valHead & "', " _
  & "Standfirst='" & valStandfirst & "'," _
  & "Thumbnail='" & valThumbnail & "'," _
  & "MainImage='" & valMainImage & "'," _
  & "MetaDescription='" & valMetaDescription & "'," _
  & "MetaKeyWords='" & valMetaKeyWords & "'," _
  & "Article='" & valArticle & "'," _
  & "URLTitle=" & Nothing & " " _
  & "WHERE ContentID = " & qID

  
  hope this helps
  

  
  

  Ketan A. Lohar
  MCP, MCTS ( ASP.NET 3.5 )
  
  Please mark as answer if it helps :)