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我有三个非空域的字段。如何更改它们以接受 NULL 数据?
frais_inscription NUMBER(6,2) NOT NULL, date_paiement DATE NOT NULL, type_paiement VARCHAR2(15) NOT NULL,
你只是想改变你的表的列来接受空值吗?这是通用语法:
alter table yourtable modify (yourfield number(6,2) null);
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