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Oracle SQL Sequence

Oracle SQL Sequence ??????????????????????????????????????????????????????

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create sequence test_2;

???????????????????????????????????????????1????-5?

alter sequence test_2 increment by -5;

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select test_2.nextval from dual;

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alter sequence test_2 increment by 1;

?????????????????????????????ID???

SQL Sequence Increment Demonstration

???????????SQL Sequence ????????????????????????????????

1. ??????`create sequence test_2;`

2. ?????????`alter sequence test_2 increment by -5;`

3. ??????`select test_2.nextval from dual;`

4. ?????`alter sequence test_2 increment by 1;`

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Sequence Increment Examples

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1. ??????`create sequence test_2;`

2. ???????`alter sequence test_2 increment by -5;`

3. ??????`select test_2.nextval from dual;`

4. ?????`alter sequence test_2 increment by 1;`

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