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CREATE TABLE example(
ID Number(4) NOT NULL PRIMARY KEY,
NAME VARCHAR(25),
PHONE VARCHAR(10),
ADDRESS VARCHAR(50) );
È»ºó£¬ÄãÐèÒªÒ»¸ö×Ô¶¨ÒåµÄsequence
CREATE SEQUENCE emp_sequence
INCREMENT BY 1 -- ÿ´Î¼Ó¼¸¸ö
START WITH 1 -- ´Ó1¿ªÊ¼¼ÆÊý
NOMAXVALUE -- ²»ÉèÖÃ×î´óÖµ
NOCYCLE -- Ò»Ö±ÀÛ¼Ó£¬²»Ñ»·
NOCACHE -- ²»½¨»º³åÇø
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CREATE TRIGGER "´¥·¢Æ÷Ãû³Æ" BEFORE
INSERT ON example FOR EACH ROW WHEN (new.id is null)
begin
select emp_sequence.nextval into: new.id from dual;
end;
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INSERT INTO example
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