SQL*Plus User's Guide and Reference for information on the SQL*Plus RECOVER command AUTOMATIC Specify AUTOMATIC if you want Oracle to automatically generate the name of the next archived redo log file needed to
In case of a system failure event, you will lose all cached sequence values that have not been used in committed SQL statements. ORDER Use ORDER to ensure that Oracle will generate the sequence numbers in order of request. This option is useful if you are using Oracle Real Application Clus...
SQL Statements: ALTER CLUSTER to ALTER SEQUENCE, 18 of 18ALTER SEQUENCE Purpose Use the ALTER SEQUENCE statement to change the increment, minimum and maximum values, cached numbers, and behavior of an existing sequence. This statement affects only future sequence numbers. See Also: CREATE ...
Query generators producing sequences of SQL statements are embedded in many applications. As the response time of such sequences is often far from optimal, their optimization is an important issue. CGO (Coarse-Grained Optimization) is an appropriate optimization approach...
·VALUESclause ofINSERTstatements · TheSELECTlist of aSELECTstatement · TheSETclause of anUPDATEstatement CURRVALandNEXTVALcannot be used in these places: 不能用于以下场景 · A subquery 子查询 · A view query or materialized view query 视图或物化视图查询 ...
oracle文档:https://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_6015.htm#SQLRF01314 一、序列的特点: 1。 可以为表中的记录自动产生唯一序号; 2。 由用户创建并且可以被多个用户共享; 3。典型应用是生成主键值,用于标识记录的唯一性; 4。允许同时生成多个***,而每一个***是唯一的。 5...
In the event the system is shut down (either normally or through a system failure), all cached sequence values that have not been used in committed statements are lost (that is, they will never be used). The value specified for the CACHE option is the maximum number of sequence values th...
SQL CREATESEQUENCETest.CountBy1STARTWITH1INCREMENTBY1; GO B. 创建按 1 递减的序列 以下示例从 0 开始,每次使用时递减 1。 SQL CREATESEQUENCETest.CountByNeg1STARTWITH0INCREMENTBY-1; GO C. 创建按 5 递增的序列 以下示例创建一个每次使用时增加 5 的序列。
An overview of the usage of DROP SEQUENCE for the TiDB database. /docs/dev/sql-statements/sql-statement-drop-sequence/ /docs/dev/reference/sql/statements/drop-sequence/ DROP SEQUENCE The DROP SEQUENCE statement drops the sequence object in TiDB. Synopsis DropSequenceStmt ::...
Transact-SQL statements that useSELECT *will receive the new column as the last column instead of the first column. If this is not acceptable, then you must create an entirely new table, move the data to it, and then recreate the permissions on the new table. ...