left join multipli

[nICO80]

Che differenza c'è in termini concettuali e/o di performance fra queste 2 query?

SELECT * FROM table1 
LEFT JOIN (table2, table3)
ON (table2.id = table1.id AND table3.id = table1.id)

e

SELECT * FROM table1 
LEFT JOIN table2 ON table2.id = table1.id
LEFT JOIN table3 ON table3.id = table1.id