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POCheck if a table is empty (MSAccess Database + Delphi)
 

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  1. POCheck if a table is empty (MSAccess Database + Delphi)
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    <p>I need to findout whether a created table has entries in it or not.</p> <p>What I need is, </p> <pre><code>if (TableIsEmpty) then do_something else do_something_else; </code></pre> <p>What I've written for the purpose is :</p> <pre><code>Function IsTableEmpty:Boolean; Var DataSource : string; Begin DataSource := 'Provider=Microsoft.Jet.OLEDB.4.0'+ ';Data Source=c:\mydb.mdb'+ ';Persist Security Info=False'; Form2.ADOConnection1.ConnectionString := DataSource; Form2.ADOConnection1.LoginPrompt := False; Form2.ADOCommand1.Connection := Form2.ADOConnection1; Form2.ADOTable1.ConnectionString := DataSource; Form2.ADOTable1.Connection := Form2.ADOConnection1; if (Form2.ADOTable1.IsEmpty)then result := true else result := false; End; </code></pre> <p>But this function returns true irrespective of status of the table!</p> <p><em><strong></em> EDIT***</strong> Modified Code : </p> <pre><code>Function IsTableEmpty:Boolean; Var DataSource, cs : string; Begin DataSource := 'Provider=Microsoft.Jet.OLEDB.4.0'+ ';Data Source=c:\Users.mdb'+ ';Persist Security Info=False'; Form2.ADOConnection1.ConnectionString := DataSource; Form2.ADOConnection1.LoginPrompt := False; Form2.ADOCommand1.Connection := Form2.ADOConnection1; Form2.ADOTable1.Connection := Form2.ADOConnection1; Form2.ADOTable1.TableName := 'userIdentification'; Form2.ADOTable1.Active := True; cs := 'Select * from userIdentification'; Form2.ADOCommand1.CommandText := cs; Form2.ADOCommand1.Execute; if Form2.ADOTable1.RecordCount &lt;= 0 then result := true else result := false; Form2.ADOConnection1.Close; End; </code></pre> <p>This function always returns false!!</p>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USPriyabrata
    1. USPriyabrata
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    1. VO
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      1. POCheck if a table is empty (MSAccess Database + Delphi)
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POCheck if a table is empty (MSAccess Database + Delphi)
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POCheck if a table is empty (MSAccess Database + Delphi)
      1. This table or related slice is empty.
      1. VTUpMod
    1. COCan you issue a SQL select on the table "select count(1) from tablename" and see how many records it returns?
      singulars
      1. POCheck if a table is empty (MSAccess Database + Delphi)
      1. USKeith Miller
    2. COYou missed to set your Adotable to active, so you will always get true. BTW using ADOTable1.ConnectionString is not necessary if you use ADOTable1.Connection
      singulars
      1. POCheck if a table is empty (MSAccess Database + Delphi)
      1. USbummi
    3. COI am getting the result as true not false.@bummi .
      singulars
      1. POCheck if a table is empty (MSAccess Database + Delphi)
      1. USPriyabrata
 

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