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オラクルCreate文

Last updated at Posted at 2014-05-12

忘れていたので復習を・・・。

■Create文

create table SAMPLE_TABLE
 (
    SAMPLE_ID char(3),
    SAMPLE_FID char(5),
    SAMPLE_NAME varchar2(10),
    constraint PK_SAMPLE_ID primary key( SAMPLE_ID ),
    constraint FK_SAMPLE_FID foreign key ( SAMPLE_FID ) references SAMPLE_FOREIGN_TABLE( SAMPLE_FID )
 )

CREATE TABLE <表名>
(
   <列名> <データ型>
 , <列名> <データ型> <列制約>
 , ・・・・
)

列制約には、以下のようなものがある
 ・primary key ← 一意制約とNOT NULL制約の複合
 ・foreign key ← 他のテーブルの主キーまたは一意キーを参照する制約
 ・not null  ← NULL値を禁止する

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