标签：style c class blog code tar
procedure TForm1.FormCreate(Sender: TObject);
var
i: Integer;
LCode: Integer;
begin
{给 FDSQLiteCollation1 设定参数}
FDSQLiteCollation1.DriverLink := FDPhysSQLiteDriverLink1;
// FDSQLiteCollation1.CollationKind := scCompareString; //这是默认值(Unicode 不区分大小写, 在 Win 下是调用 WinAPI.CompareString); 使用其他选项需要自定义排序规则
FDSQLiteCollation1.LocaleName := ‘zh-CN‘;
FDSQLiteCollation1.Flags := [sfIgnoreCase];
FDSQLiteCollation1.CollationName := ‘MyCollation‘; //下面所有的调用全要依赖这个名称
FDSQLiteCollation1.Active := True;
FDConnection1.Params.Add(‘DriverID=SQLite‘);
// FDConnection1.Params.Add(‘OpenMode=CreateUTF8‘); //这是默认值, 可选 CreateUTF16(Unicode)
{建立测试表, 三个字段 str(汉字), code(汉字对应的 Unicode 值), id(添加顺序)}
FDConnection1.ExecSQL(‘CREATE TABLE MyTable(str string(10), code integer, id integer)‘);
// FDConnection1.ExecSQL(‘CREATE TABLE MyTable(str string(10) COLLATE MyCollation, code integer, id integer)‘); //用在表设计时
{添加测试数据数据}
for i := 0 to 99 do
begin
LCode := Random($9FA5-$4E00);
FDConnection1.ExecSQL(‘INSERT INTO MyTable(str, code, id) VALUES(:1, :2, :3)‘, [WideChar($4E00 + LCode), LCode, i+1]);
end;
FDQuery1.Open(‘SELECT * FROM MyTable‘); //无排序
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
FDQuery1.Open(‘SELECT * FROM MyTable ORDER BY str‘); //SQLite 内置排序
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
FDQuery1.Open(‘SELECT * FROM MyTable ORDER BY str COLLATE MyCollation‘); //FireDAC 默认排序
end;
FireDAC 下的 Sqlite [9] - 关于排序,布布扣,bubuko.com
标签：style c class blog code tar
原文地址：http://www.cnblogs.com/del/p/3746725.html
