在空白窗体上添加: TFDConnection, TFDPhysSQLiteDriverLink, TFDGUIxWaitCursor, TMemo
procedure TForm1.FormCreate(Sender: TObject);
var
List: TStrings;
V: Variant;
begin
FDConnection1.Open('DriverID=SQLite; Database=C:\Temp\FDDemo.sdb');
List := TStringList.Create;
FDConnection1.GetInfoReport(List);
Memo1.Clear;
Memo1.Lines.Add('==> 获取连接信息:');
Memo1.Lines.AddStrings(List);
FDConnection1.GetTableNames('', '', '', List);
Memo1.Lines.Add(#13#10'==> 获取数据库中的表名列表:');
Memo1.Lines.AddStrings(List);
FDConnection1.GetTableNames('', '', '', List, [], [tkView]);
Memo1.Lines.Add(#13#10'==> 获取数据库中的查询名列表:');
Memo1.Lines.AddStrings(List);
FDConnection1.GetFieldNames('', '', 'Orders', '', List);
Memo1.Lines.Add(#13#10'==> 获取 Orders 表中的字段名列表:');
Memo1.Lines.AddStrings(List);
V := FDConnection1.ConnectionMetaDataIntf.GetTables([], [tkTable], '', '', '').Rows[0].GetData(0);
Memo1.Lines.Add(#13#10'==> 获取第一个表中第一列的第一个数据:');
Memo1.Lines.Add(V);
List.Free;
end;
{结果如下:}
{...............................................................
==> 获取连接信息:
================================
Connection definition parameters
================================
Name=Unnamed
DriverID=SQLite
Database=C:\Temp\FDDemo.sdb
================================
FireDAC info
================================
Tool = RAD Studio XE6
FireDAC = 10.0.1 (Build 69712)
Platform = Windows 32 bit
Defines = FireDAC_NOLOCALE_META;FireDAC_MONITOR
================================
Client info
================================
Loading driver SQLite ...
DLL =
Client version = 3.8.3.1
Compile options = ENABLE_COLUMN_METADATA;ENABLE_FTS3;
ENABLE_FTS3_PARENTHESIS;ENABLE_FTS4;ENABLE_RTREE;
ENABLE_STAT4;HAS_CODEC;OMIT_AUTOINIT;
OMIT_DEPRECATED;SYSTEM_MALLOC;TEMP_STORE=2;
THREADSAFE=2
================================
Session info
================================
Current catalog =
Current schema =
Total changes = 0
Database encoding = UTF8
Encryption mode =
Cache size = 10000 ==> 获取数据库中的表名列表: Categories CustomerCustomerDemo CustomerDemographics Customers Employees EmployeeTerritories FDQA_all_types FDQA_ascii_types FDQA_batch_test FDQA_bcd FDQA_blob FDQA_Categories FDQA_db_types FDQA_details_autoinc FDQA_FK_tab FDQA_ForAsync FDQA_identity_tab FDQA_locktable FDQA_map1 FDQA_map2 FDQA_map3 FDQA_map4 FDQA_master_autoinc FDQA_Maxlength FDQA_novalstable FDQA_numbers FDQA_OrderDetails FDQA_parambind FDQA_Products FDQA_tabwithpk FDQA_timestamp FDQA_transtable FDQA_V_Test FDQA_WString "Order Details" Orders Products Region Shippers Suppliers Territories ==> 获取数据库中的查询名列表: FDQA_V_Test ==> 获取 Orders 表中的字段名列表: OrderID CustomerID EmployeeID OrderDate RequiredDate ShippedDate ShipVia Freight ShipName ShipAddress ShipCity ShipRegion ShipPostalCode ShipCountry ==> 获取第一个表中第一列的第一个数据: 1 ...............................................................}
FireDAC 下主要有四个 SQLite 的相关单元:
FireDAC.Phys.SQLiteCli // 最底层的 API; 利用它可以像 C 语言一样写程序
FireDAC.Phys.SQLiteWrapper // 主功能包装; 利用它可以像 C++ 一样写程序; 这可能是我以后使用最多的
FireDAC.Phys.SQLiteMeta // 元信息包装
FireDAC.Phys.SQLite // 实现 FireDAC 相关接口; 使用 FireDAC 的方式操作 SQLite 可能是最简单的, 更重要的是: FireDAC 操作所有数据库的方法是一样的
FireDAC.Phys.SQLiteWrapper 提供的 TSQLiteDatabase 类表示 SQLite 数据库, 使用它时一般无须创建,
直接从 FDConnection1.CliObj 或 FDConnection1.ConnectionIntf.CliObj 转换即可.
{示例:通过 TSQLiteDatabase 类获取 CharacterSet}
uses FireDAC.Phys.SQLiteWrapper;
procedure TForm1.Button1Click(Sender: TObject);
var
db: TSQLiteDatabase;
begin
db := TSQLiteDatabase(FDConnection1.CliObj); //假定 FDConnection1 已连接
ShowMessage(db.CharacterSet); //UTF8
end;