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postgresql

Type
    timestamp [ (0..6) ] [without time zone]
    timestamp [ (0..6) ] with time zone
    date
    time [ (p) ] [ without time zone]  (p = 0..6 or 0..10)
    time [ (p) ] with time zone        (p = 0..6 or 0..10)
    interval [ fields ] [ (0..6) ]

Instructions:
    ALTER
    SELECT

Fonctions:
    array_length(ARRAY, dim)

Type PostgreSQL vers PHP
    timestamp with time zone :: date('c')

Liens
    PostgreSQL 9.4