I want create a database and a table programmatically with my Delphi Program on Windows 7 using Zeoslib component. From what I have found online so far, Zeoslib is expecting database to be created before using it. If so, is there a way to create a database and a table using Zeoslib tools.
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2 Answers
Normal this question will be closed because you did not show what have you tried so far.
With ZeosLib it's easy
Safety Note:
Of course you should use parameterized queries. only in order to simplify the procedure, it has been omitted here
Create the Database
procedure TForm1.CreateClick(Sender: TObject);
begin
ZConnection1.Protocol:='sqlite-3';
ZConnection1.Database:='F:\Programme\stack\SQLite\Database.sqlite';
ZConnection1.Connect;
ZConnection1.Disconnect;
end;
Create a Table and Insert
procedure TForm1.CreateInsertClick(Sender: TObject);
begin
ZQuery1.SQL.Text := 'CREATE TABLE hardware (id INTEGER PRIMARY KEY, compname VARCHAR(30), username VARCHAR(30), model VARCHAR(30))';
ZQuery1.ExecSQL;
ZQuery1.SQL.Text := 'CREATE INDEX sHardware ON hardware(compname)';
ZQuery1.ExecSQL;
ZQuery1.SQL.Text := 'INSERT INTO hardware(id, compname, username, model) VALUES (1, "AMD8537", "OMonge", "Gigabyte");';
ZQuery1.ExecSQL;
end;
To see Values Connect again
procedure TForm1.ConnectClick(Sender: TObject);
begin
ZConnection1.Connect;
end;
Show Values
procedure TForm1.OpenClick(Sender: TObject);
begin
ZQuery1.SQL.Text := 'SELECT id, compname FROM hardware';
ZQuery1.Open;
end;
Form
Running
Comments
If database file does not exists - SQLite creates it on connect. Below is a very simple but functioning example:
procedure TForm1.Button1Click(Sender: TObject);
begin
ZConnection1.Protocol := 'sqlite-3';
ZConnection1.Database := 'foo.s3db';
if not FileExists('foo.s3db') then
begin
ZConnection1.Connect;
ZConnection1.ExecuteDirect('create table foo (bar integer)');
end
else
ZConnection1.Connect;
ZConnection1.Disconnect;
end;
