重置自动增量序列pl-sql [英] Reset auto increment sequence pl-sql

问题描述

如何重置自动增量主键?

How can i reset auto increment primary key ?

我有一个doc_id_seq和一个doc_pk_trg触发器，如下所示:

I have a doc_id_seq and a doc_pk_trg trigger like that:

CREATE SEQUENCE doc_id_seq START WITH 1;

CREATE OR REPLACE TRIGGER doc_pk_trg
BEFORE INSERT ON TFIDF FOR EACH ROW
BEGIN  
 IF :NEW.doc_id IS NULL THEN    
   SELECT doc_id_seq.NEXTVAL INTO :NEW.doc_id FROM DUAL;  
     END IF;
     END;
 /

我想学习重置序列.我怎样才能做到这一点 ?

I want to learn reset the sequence . How can I do this ?

推荐答案

您可以使用ALTER SEQUENCE语法.

You could use the ALTER SEQUENCE syntax.

汤姆·凯特(Tom Kyte)在这里解释了如何做到这一点:

Tom Kyte explains how to do exactly this here:

http://asktom .oracle.com/pls/asktom/f?p = 100:11:0 ::::: P11_QUESTION_ID:1119633817597

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