Description An EXISTS condition tests for existence of rows in a subquery. CREATE SEQUENCE IF NOT EXISTS ; Also, why is the conditional drop not documented anywhere in the most recent documentation online? START WITH 1 -- 从1开始计数. Usage. I just bought your book "expert one on one" . Use the CREATE SEQUENCE statement to create a sequence, which is a database object from which multiple users may generate unique integers. Applies to: SQL Server (all supported versions) Azure SQL Database. The idea is that the script can be run multiple times without modification so the person running it doesn't have to … Oracle CREATE SYNONYM Oracle Using a sequence created in the same script in Oracle RE: ORA-02289: sequence does not exist. RE: ORA-00942: table or view does not exist. DDL scripts generated in 12.1 DBMS_METADATA.GET_DDL are not runnable in … Oracle Oracle / PLSQL: Sequences (Autonumber) - TechOnTheNet I'm … Use Oracle EXISTS Operator to Test for the Existence of the Rows The Oracle EXISTS condition is used in combination with a subquery and is considered "to be met" if the subquery returns at least one row. ORA-02289: sequence does not exist - IT Tutorial - Oracle DBA The current draft SQL database language standard, informally called SQL:200x, … I am asking the Support assistance to identify the issue. ALTER SEQUENCE
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