Mega Code Archive
Copy a table (struct & content)
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Title: Copy a table (struct & content)
Question: How can i copy a table ?
Answer:
There is an easy way to copy a whole database table with the TTable component:
procedure CopyTableStructure(Source: TTable; DB,Dest: string);
var NewTable: TTable;
begin
NewTable := TTable.Create(self);
with NewTable do
begin
Databasename := DB;
Tablename := Dest;
FieldDefs.Assign(Source.FieldDefs);
IndexDefs.Assign(Source.IndexDefs);
CreateTable;
NewTable.Destroy;
end;
end;
The parameters that you have to pass to this function is an open
TTable object, the BDE alias and the name of the new table:
Table1.Active := true;
CopyTableStructure(Table1,'DBALIAS','NewTable');
Copying the whole content is also easy:
var hs: string;
i: integer;
...
Source.First;
with NewTable do
begin
while not Source.EOF do
begin
Append;
for i := 0 to Source.FieldCount - 1 do
begin
hs := Source.Fields[i].FieldName;
NewTable[hs] := Source[hs];
end;
Source.Next;
end;
end;
'Source' has to be from type TDataset (e.g: TTable, TQuery or
TClientDataset) !
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