You can declare a variable or argument of a PL/SQL program unit using the LONG datatype. However, you cannot then call the program unit from SQL. Within a single SQL statement, all LONG columns, updated tables, and locked tables must be located on the same database. LONG and LONG RAW ...
SYS@orcl>select increment$,minvalue,maxvalue,highwater,cache from seq$ where obj#=20306; INCREMENT$ MINVALUE MAXVALUE HIGHWATER CACHE --- --- --- --- --- 1 1 9999999999 560492 30 SYS@orcl>shutdown abort; ORACLE instance shut down. SYS@orcl>startup; SYS@orcl>select test_seq.nextval...
MAXVALUE 9999999999999999999999999999 INCREMENT BY 1 START WITH 1 CACHE 10 NOORDER NOCYCLE ; 2.查看建表DDL语句...,ctl文件需要添加如下语句: OPTIONALLY ENCLOSED BY '"' 5.恢复删除的数据 分为两种方法:scn和时间戳两种方法恢复。...查询到的scn号为:1499223 2、查询当前scn号之前的scn select * from 表...
(number1 IN NUMBER, number2 IN NUMBER, result OUT NUMBER) is BEGIN result := number1 + number2; END; -- sql窗口中调用 DECLARE res NUMBER(6); BEGIN SP_SUM_PROC(1, 3, res); dbms_output.put_line(res); --输出:4 END; -- 命令行窗口中调用 SQL> VARIABLE res NUMBER; SQL> EXEC ...
1. 2. 3. 4. 5. 后,自定义一个序列(sequence): CREATE SEQUENCE example_sequence INCREMENT BY 1 -- 每次加几个 START WITH 1 -- 从1开始计数 NOMAXVALUE -- 不设置最大值 NOCYCLE -- 一直累加,不循环 NOCACHE -- 不建缓冲区 1. 2. ...
1.绝对值 S:select abs(-1) value O:select abs(-1) value from dual 2.取整(大) S:select ceiling(-1.001) value O:select ceil(-1.001) value from dual 3.取整(小) S:select floor(-1.001) value O:select floor(-1.001) value from dual ...
在Oracle中,可以通过以下几种方式获取添加行的ID: 1. 使用序列(Sequence):序列是Oracle中一种生成唯一数值的对象,可以用于生成唯一的ID。首先需要创建一个序列,然后在插入数据...
NUMBER increment() Returns a new NUMBER object initialized to the NUMBER value incremented by 1. int intValue() Calls toInt to convert internal Oracle Number to a Java int. boolean isConvertibleTo(java.lang.Class cls) Determines if the object can be converted to a particular class ...
34、size of the file (in Oracle blocks)INCREMENT_BYNUMBERDefault increment for autoextensionUSER_BYTESNUMBERSize of the useful portion of the file (in bytes)USER_BLOCKSNUMBERSize of the useful portion of the file (in Oracle blocks)dba_rollback_segsColumnDatatypeNULLDescriptionSEGMENT_NAMEVARCHAR2...
ORA-02284: 重复的 INCREMENT BY 说明 ORA-02285: 重复的 START WITH 说明 ORA-02286: 未指定 ALTER SEQUENCE 的选项 ORA-02287: 此处不允许序号 ORA-02288: 无效的 OPEN 模式 ORA-02289: 序列(号)不存在 ORA-02290: 违反检查约束条件 (.) ORA-02291: 违反完整约束条件 (.) - 未找到父项关键字 ...