Sql vyberte si z viacerých tabuliek vnútorné spojenie
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sql dopyt vnútorné spojenie, 3 stoly
# no need to use parentheses - works fine
SELECT * FROM names A
INNER JOIN address B ON A.personID = B.personID
INNER JOIN emailAddress C ON A.personID = C.personID
INNER JOIN phoneNumbers D ON A.personID = D.personID;