如何在Oracle中重置序列？ [英] How do I reset a sequence in Oracle?

问题描述

在 PostgreSQL 中，我可以这样做：

ALTER SEQUENCE serial RESTART WITH 0;

是否有Oracle等效项？

Is there an Oracle equivalent?

推荐答案

以下是从Oracle guru中将任何序列重置为0的好方法： Tom Kyte 。

Here is a good procedure for resetting any sequence to 0 from Oracle guru Tom Kyte. Great discussion on the pros and cons in the links below too.

[e-mail]> 
create or replace
procedure reset_seq( p_seq_name in varchar2 )
is
    l_val number;
begin
    execute immediate
    'select ' || p_seq_name || '.nextval from dual' INTO l_val;

    execute immediate
    'alter sequence ' || p_seq_name || ' increment by -' || l_val || 
                                                          ' minvalue 0';

    execute immediate
    'select ' || p_seq_name || '.nextval from dual' INTO l_val;

    execute immediate
    'alter sequence ' || p_seq_name || ' increment by 1 minvalue 0';
end;
/

从此页面：动态SQL重置序列值

另一个好的讨论也在这里：如何重置序列？

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