EXISTS and NOT EXISTS Operator in Oracle SQL - IT Tutorial The Oracle docs note this on the ora-02289 error: ORA-02289: sequence does not exist. For example, if user MARY creates SCOTT.TABLE and refers to a sequence that is not fully qualified, such as SEQ2, then the column will use sequence MARY.SEQ2. To create a sequence that stops at a predefined limit, for an ascending sequence, specify a value for the MAXVALUE parameter. DDL scripts generated in 12.1 DBMS_METADATA.GET_DDL are not runnable in 12.2. since the PARTITION/NOPARTITION now is unsupported. CREATE SEQUENCE seqTest. Statement 3. select s.nextval from dual. Here is the basic syntax of the DROP SEQUENCE statement: DROP SEQUENCE … Ask Question Asked 12 years, 6 months ago. … Identity combines these two features into a simple package for creating table specific unique values. INCREMENT [ BY ] [ = ] sequence_interval – Specifies the step interval of the sequence Snowflake Create Sequence Example. Checks ALL_SEQUENCES to see if a sequence of a given name exists. CREATE SEQUENCE In 12.2 the create sequence statement fails if PARTITION/NOPARTITION clause is included. Make sure the sequence name is correct, and that you have the right to perform the desired operation on this sequence. Create DECLARE v_dummy NUMBER; BEGIN -- try to find sequence in data dictionary SELECT 1 INTO v_dummy FROM user_sequences WHERE sequence_name = 'MY_SEQUENCE_NAME'; -- if sequence found, do nothing EXCEPTION WHEN no_data_found THEN -- sequence not found, create it EXECUTE IMMEDIATE 'create sequence my_sequence_name'; END;

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