sequence nextval

In Oracle, sequence is the so-called serial number, each time it takes its own initiative to add, usually in order to be ordered by serial number place.1. Create SequenceYou first have to have create sequence or create any sequence permissions,CREATE SEQUENCE emp_sequenceINCREMENT by 1--add a few each timeStart with 1-

In Oracle, sequence is the so-called serial number, which is automatically increased every time it is obtained. It is generally used in places where the sequence numbers need to be sorted.1. Create SequenceFirst, you must have the create sequence or create any sequence permission,Create

Tags: title Currval LTE official modified tar ASE memory instanceSequence: is a database object provided by Oacle to produce a series of unique numbers. Automatically provide a unique value Shared objects Primarily used to provide primary key values Loading sequence values into memory can improve access efficiency To create a sequence: 1, to ha

sequence INSERT INTO sequence VALUES ('seq_test1_num1', '0', '1');INSERT INTO sequence VALUES ('seq_test1_num2', '0', '2'); 3. create a function to obtain the current value of the sequence (v_seq_name parameter value indicates the sequence name) create function currval(v_se

When insert all encounters Sequence When modifying the PL/SQL package code in business letter 2.0 over the past few days, when implementing such an SQL statement: Insert All IntoBo (object_name, SN) Values(Object_name, seqkey) IntoCO (object_name, SN) Values(Object_name, seqkey) SelectObject_name, sq1.nextval FromAO Oracle reported a ORA-02287 error because insert all needs to insert multiple tables, b

S_s_depart minvalue 1 maxvalue 999999999999999999999999999 start with 1 increment by Note, however, that the first nextval returns the initial value, and the subsequent nextval automatically increases the increment by value that you define, and then returns the incremented value. Currval always returns the value of the current sequence, but the currval is n

1. the auto-Increment Function in Oracle can only be completed by sequence. All auto-increment operations must be completed by the user. Sequence creation format: [SQL] CREATE SEQUENCE sequence [INCREMENT BY n] [STARTWITH n] [{MAXVALUE n | NOMAXVALUE}] [{MINVALUE n | NOMINVALUE}] [{CYCLE | NOCYCLE}] [{ CACHE n | NOCACH

discontinuity, can also be set to---------NOCACHEThe sequence created for S_depart are as follows:CreateSequence S_s_departMinValue 1MaxValue 999999999999999999999999999Start with1Increment by1NoCacheOnce you've defined emp_sequence, you can use Currval,nextvalCurrval= returns the current value of the sequenceNextval= increases the value of sequence and then returns the

cause the sequence to be discontinuous, can also be set to---------NOCACHEThe sequence created for s_depart such as the following:CreateSequence S_s_departMinValue 1MaxValue 999999999999999999999999999Start with1Increment by1NoCacheOnce the emp_sequence is defined. You'll be able to use Currval,nextval.Currval= returns the current value of the sequenceNextval= adds a s