Table: psg_players_2
Columns: name
position
period
appearances
goals
nationality

Question: Name the total number of period for yvon le roux
SQL: SELECT COUNT("period") FROM psg_players_2 WHERE "name" = 'Yvon Le Roux'

Question: Name the period for michel llodra
SQL: SELECT "period" FROM psg_players_2 WHERE "name" = 'Michel Llodra'

Question: Name the number of position for democratic republic of the congo
SQL: SELECT COUNT("position") FROM psg_players_2 WHERE "nationality" = 'Democratic Republic of the Congo'