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In SELECT list of subquery INSERT statement.In SELECT list of SELECT statement that is not contained a subquery or a view.In VALUES clause of INSERT statement while inserting values in table.SEQUENCE& NEXTVAL statements are used in ORACLE database.

NEXTVAL statement is used to insert values on existing table by increasing old sequence value with increment by value and returns generated new value. SEQUENCE statement is used to generate UNIQUE values on particular column in existing table with starting value and increment by value. Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.SEQUENCE & NEXTVAL statements are used to insert values automatically PRIMAR and UNIQUE columns while adding new rows on table.

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Where sequence_1.nextval will insert id’s in id column in a sequence as defined in sequence_1. INSERT into students VALUES(sequence_1.nextval,'Suresh') INSERT into students VALUES(sequence_1.nextval,'Ramesh')

Example to use sequence : create a table named students with columns as id and name.

Sequence will repeat itself from start value after exceeding 100.įollowing is the sequence query creating sequence in descending order.Ībove query will create a sequence named sequence_2.Sequence will start from 100 and should be less than or equal to maximum value and will be incremented by -1 having minimum value 1.

ISRO CS Syllabus for Scientist/Engineer ExamĪbove query will create a sequence named sequence_1.Sequence will start from 1 and will be incremented by 1 having maximum value 100.

ISRO CS Original Papers and Official Keys.

GATE CS Original Papers and Official Keys.