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Selectia unor campuri dintr-o tabela – Clauza SELECT

October 15, 2009

Clauza SELECT – extrage date dintr-o BD

Folosire clauza SELECT pt. selectia unor anumite campuri dintr-o singura tabela precum si a tuturor campurilor din tabela respectiva:
test

Clauza select este insotita de lista de campuri urmata de FROM si numele tabelei.

Observatii:

Poate aparea conditia WHERE , dupa WHERE se poate pune GROUP BY daca avem functie agregat si dupa ORDER BY pentru ordonare.

Inner-join se pune inaintea clauzei GROUP BY!

 

Intr-un select se pot face calcule!

 

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