CREATE SEQUENCE seq_2 INCREMENT BY 1 START WITH 1 MAXVALUE 30 MINVALUE 0 NOCYCLE CACHE 10 ORDER; CREATE TABLE tab1 (col1 int, col2 int); INSERT INTO tab1 VALUES (0, 0); INSERT INTO tab1 (col1, col2) VALUES (seq_2.NEXTVAL, seq_2.NEXTVAL);SELECT * FROM tab1;col1 col2 1 ...
CREATE TABLE tab1 (col1 int, col2 int); INSERT INTO tab1 VALUES (0, 0); INSERT INTO tab1 (col1, col2) VALUES (seq_2.NEXTVAL, seq_2.NEXTVAL); SELECT * FROM tab1; col1 col2 0 0 1 1 ALTER SEQUENCE seq_2 RESTART WITH 5 INCREMENT by 2 MAXVALUE 300; INSERT INTO tab1 (col...
CREATE TABLE tab1 (col1 int, col2 int); INSERT INTO tab1 VALUES (0, 0); INSERT INTO tab1 (col1, col2) VALUES (seq_2.NEXTVAL, seq_2.NEXTVAL); SELECT * FROM tab1; col1 col2 0 0 1 1 ALTER SEQUENCE seq_2 RESTART WITH 5 INCREMENT by 2 MAXVALUE 300; INSERT INTO tab1 (col...
ALTER SEQUENCE命令修改一个现有的序列发生器的参数。 任何没有明确在 ALTER SEQUENCE 命令里声明的参数都将保留原先的设置。 PARAMETERS 参数 name 一个要修改的序列的名字(可以有模式修饰)。 increment INCREMENT BYincrement子句是可选的。一个正数会让序列成为递增序列,负数则成为递减序列。 如果没有声明,将沿用原来...
ALTER SEQUENCE — 更改一个序列发生器的定义 大纲 ALTER SEQUENCE [ IF EXISTS ] name [ AS data_type ] [ INCREMENT [ BY ] increment ] [ MINVALUE minvalue | NO MINVALUE ] [ MAXVALUE maxvalue | NO MAXVALUE ] [ START [ WITH ] start ] [ RESTART [ [ WITH ] restart ] ] [ CACHE ...
oracle修改序列自增值alter sequence increment by 序列值比表中最大值小,导致新插入id重复,比如数据库中100,seq.nextval值为100,思路是将自增值设置为800.执行一次让两个值相等。 1、alter sequence t1_ID_SEQ increment by 520; 2、SQL> select t1_ID_SEQ.nextval from dual;...
1.更改increment为一个你想让序列增加到的值 alter sequence seq_xxrs increment by 1000; 2.执行一次查询序列的语句 select seq_xxrs.nextval from dual; 3.然后将increment改回来 alter sequence seq_xxrs increment by 1; 此时的序列的值就增大了。
Operations.Builders.AlterOperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AlterSequenceOperation> AlterSequence (stringname,string? schema =default,intincrementBy =1,long? minValue =default,long? maxValue =default,boolcyclic =false,intoldIncrementBy =1,long? oldMinValue =default,long?
十五、ALTER SEQUENCE ALTER SEQUENCE ALTER SEQUENCE — 更改一个序列发生器的定义 大纲 ALTER SEQUENCE [ IF EXISTS ] name [ AS data_type ] [ INCREMENT [ BY ] increment ] [ MINVALUE minvalue | NO MINVALUE ] [ MAXVALUE maxvalue | NO MAXVALUE ]...
1.更改increment为一个你想让序列增加到的值 alter sequence seq_xxrs increment by 1000; 2.执行一次查询序列的语句 select seq_xxrs.nextval from dual; 3.然后将increment改回来 alter sequence seq_xxrs increment by 1; 此时的序列的值就增大了。