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program testsqldb;
{ A very simple example for sqldb, written by Joost van der Sluis (2004)
The following parameters are used, in given order:
parameter1 = databasetype (mysql,interbase,postgresql - case sensitive)
parameter2 = databasename
parameter3 = tablename
parameter4 = username, optional
parameter5 = password, optional
This example will only display the data for each record in the given table.
Examples:
./testsqldb postgresql testdb fpdev
./testsqldb interbase /home/firebird/dbtest.fdb fpdev sysdba 123456
}
{$mode objfpc}{$H+}
uses
Classes,
pqconnection,
mysql4conn,
IBConnection,
sqlite3conn,
sqldb;
var connection : tSQLConnection;
transaction : tSQLTransaction;
query : tSQLQuery;
tel : integer;
dbtype : string;
begin
dbtype := paramstr(1);
if dbtype = 'mysql' then connection := tMySQLConnection.Create(nil);
if dbtype = 'postgresql' then connection := tpqConnection.Create(nil);
if dbtype = 'interbase' then connection := tIBConnection.Create(nil);
if dbtype = 'sqlite3' then connection := tSQLite3Connection.Create(nil);
if not assigned(connection) then exit; // probably an invalid database type given
connection.DatabaseName := paramstr(2);
connection.UserName := paramstr(4);
connection.Password := paramstr(5);
connection.open;
transaction := tsqltransaction.create(nil);
transaction.database := connection;
query := tsqlquery.Create(nil);
query.DataBase := connection;
query.transaction := transaction;
with query do
begin
SQL.clear;
sql.add('select * from ' + paramstr(3));
ReadOnly := True; // If the query is writeable, a transaction must be assigned
// to the database.
open;
while not eof do
begin
for tel := 0 to query.FieldCount -1 do
write(fields[tel].asstring+' ');
writeln;
next;
end;
close;
query.free;
end;
transaction.free;
connection.free;
end.
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