Valor guardado que significa que ali não está nada.
A stored value meaning nothing is there.
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See how the word “nulo” is used in sentences
O campo devolveu um valor nulo. — The field returned null.
Substitui cada valor nulo por um zero. — Replace every null with a zero.
Um valor nulo nesta coluna estraga o relatório. — A null in this column breaks the report.
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