firedac

Migrating BDE applications to firedac Go up to migrating to firedac This article guides you through a series of the steps to migrate the bde application to the firedac.Topics Topic Description BDE name counterparts Most of the BDE high-level types and components have counterparts in firedac. BDE aliases migration

and took the time to try Firedac, this would like to find some ways to let FIREDAC take data and dbx like fast, and ultimately failed, the DBX implementation is too fast, 3472 records (110 fields of the table), 0 milliseconds to grab over,FIREDAC is almost 20 milliseconds faster. But FIREDAC has captured the data tfdda

Tags: table ros compilation SOF Invalid program error BER padIn the Delphi 10.2.1 Tokyo version, FireDAC is not compatible with MSSQL2000 by default, prompting "[FIREDAC][PHYS][ODBC][MICROSOFT][ODBC SQL Server Driver][sql Server] Object name ' SYS. DATABASES ' is invalid. "Error, fix for this need to modify the FireDAC.Phys.MSSQL.pas unit: First copy the FireDAC.Phys.MSSQL.pas file from the Delphi directory

For a long time did not calm down to write a blog, and now come back, is the Delphi continuous progress let me moved, excited. Delphi XE5 merged into the FIREDAC, the first impression is very good, I am afraid dbexpress and so on to step aside. Let me be most happy is FIREDAC to Sqlite support! Excellent Sqlite already have a lot of Delphi packaging (http://www.sqlite.org/cvstrac/wiki?p=SqliteWrappers,

Tags: right-time SQL role Efficiency NAP system problem resThe DBX framework (dbexpress Framework ) has been used for a long time, has always felt simple and easy to use, but today need to even MySQL5.7, found that there is no way of using it, feel it is time to give up using it for data connection.Used to use it for C/S, three layer of development, really some reluctant to give up, but no way! In the future even the database is to use FIREDAC, after

The previous blog mentions using FIREDAC to completely replace COM that set of things: Dataprovider,olevariant,clientdataset,dbexpress ...Obviously, Datasnap's remote methods must increase the parameter types for the direct sequence of the FIREDAC dataset.Add a new unit file starting from the UPDATE2 of XE5:data.firedacjsonreflectTfdjsondatasets is a DataSet list object that, as the name implies, can return

Tags: Open connect file display DFS query wait MCR delphiAfter uses FireDAC.VCLUI.Wait, you do not have to add tfdguixwaitcursorTfdconnection //Data connection //Data query tdatasource //Data source TDBGrid //Data display //uses FireDAC.Phys.SQLite, no need to add tfdphyssqlitedriverlink //access to SQLite file databaseProcedure Tform1.formcreate (sender:tobject); begin Fdquery1.connection: = FDConnection1; Fdconnection1.loginprompt:=false; Cancel Login Prompt Box datasourc

Label: style blog color Io OS use data SP Div Previously, ADO was used. If multiple result sets returned by SQL can be obtained through nextrecordset in sequence. Code porting to firedac is similar to processing multiple result sets, but there are some differences: 1. tdataset itself does not support multiple result sets, so do not waste any effort on this. 2. Switch to the next result set. The FD. nextrecordset corresponds to ADO. nextrecordset.

Add a row of data to an Access database with FIREDAC, using the SQL statement insertion methodProcedure Tform1.btninsertdataclick (Sender:tobject);VarMycom:tfdcommand;Myqry:tfdquery;Myconn:tfdconnection;sql:string;Beginsql: = ' Insert into tpusers (username,userpwd) VALUES (' 10795 ', ' xx ') ';MyConn: = Tfdconnection.create (nil);MyConn.Params.DriverID: = ' MSACC ';MyConn.Params.Database: = ' D:\TestDelphi\Test2015.mdb ';Myconn.loginprompt: = false;M

(Sender:tobject);beginFDConnection1.Params.Clear; fdconnection1.connected: = False; FDCONNECTION1.PARAMS.ADD (' Driverid=sqlite '); FDCONNECTION1.PARAMS.ADD (' database= ' + dbpath); FDCONNECTION1.PARAMS.ADD (' password=mm123 '); fdconnection1.connected: = True; Fdquery1.open (' SELECT * from MyTable '); End; {Modify Password}procedureTform1.button2click (Sender:tobject);beginFDConnection1.Params.Clear; fdconnection1.connected: = False; FDCONNECTION1.PARAMS.ADD (' Driverid=sqlit

SQLite internal is sorted by binary, can support ANSI; FRIEDAC supports Unicode sorting through tfdsqlitecollation, and can customize the sort by its Oncompare event. The following example tests the difference between the two sorts. You can quickly complete the form design by pasting the following code directly onto a blank form:Object Dbgrid1:tdbgrid left = 0 top = 0 Width = 297 Height = 199 Align = Alleft DataSource = DataSource1 Ta BOrder = 0 Titlefont.charset = Default_charset Titlefont.col

FIREDAC Logging SQL logsTracking SQL logs can be used to facilitate the development of program debugging. SQL logging consumes service charges, and it is recommended to turn off SQL logging when you formally deploy the middleware.FIREDAC records SQL logs by using the Tfdmoniflatfileclientlink control.First USES FireDAC.Moni.FlatFile, then drag and drop the Tfdmoniflatfileclientlink control.Main properties of the Tfdmoniflatfileclientlink control:Set t

); Memo1.Lines.Add(#13#10‘==> Get the first data in the first column of the first table: ‘); Memo1.Lines.Add(V); List.Free; End; {Results are as follows:} {................................................. .............. ==> Get connection information: ================================= Connection definition parameters ================================= Name=Unnamed DriverID=SQLite Database=C:\Temp\FDDemo.sdb ================================= FireDAC