1]基本设置FDQuery1.Connection
2]执行查询SQL语句
3]执行 非查询SQL语句
4]返回所有数据 和所有 列名
一定要 放一个 FDPhysSQLiteDriverLink1到ServerModule上
// uses FireDAC.Phys.SQLite 之后, 可不用添加 TFDPhysSQLiteDriverLink //访问SQLite 文件数据库
FDQuery1.Connection := UniMainModule.FDConnection1; UniMainModule.FDConnection1.LoginPrompt := false; // 取消登录提示框 UniMainModule.FDConnection1.Open('DriverID=SQLite;Database=test1.Sqlite3');
FDQuery1.Open('select id,name,info from atb');
FDQuery1.ExecSQL('INSERT INTO atb VALUES( (select max(id)+1 from atb),''aName'',''aInfo'')');
4]返回所有数据 和所有 列名, 生成网页格式，方便导出数据
procedure UniDBGridToHTML(aFDquery :TFDQuery;aHTMLFileName:string); var aHTMLtext: TstringList; j: integer; begin aHTMLtext := TstringList.Create; aHTMLtext.Add ('<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> ' + '<html> <head> <title></title> </head> ' + ' <body> <table border=".5pt solid windowtext;"; > ' + ' <col width=72 span=3 style='' 54pt''>'); aHTMLtext.Add(' <tr > '); for j := 1 to aFDquery.FieldCount do begin aHTMLtext.Add('<td>'); aHTMLtext.Add(aFDquery.Fields.FieldByNumber(j).FieldName); // 列 名 aHTMLtext.Add('</td>'); end; aHTMLtext.Add(' </tr> '); aFDquery.First; while not(aFDquery.Eof) do begin aHTMLtext.Add(' <tr > '); for j := 1 to aFDquery.FieldCount do begin aHTMLtext.Add('<td>'); aHTMLtext.Add(aFDquery.Fields.FieldByNumber(j).AsString); // 所有 值 aHTMLtext.Add('</td>'); end; aHTMLtext.Add(' </tr> '); aFDquery.Next; end; aHTMLtext.Add('</table> </body> </html> '); aHTMLtext.SaveToFile(aHTMLFileName); aHTMLtext.Free; end;
procedure TMainForm.UniButton1Click(Sender: TObject); begin UniDBGridToHTML(FDquery1,'aa.html');//调用 end;