-- 建立对象类型emp_type4 create or replace type emp_type5 as object( name varchar2(10), birthdate date, order member function compare(emp5 emp_type5) return int ); -- 为emp_type4 对象类型实现方法体 create or replace type body emp_type5 is order member function compare(emp5 emp_type...
Example2:检验游标是否打开,如果打开显示提取行数 DECLARE CURSOR emp_cursor IS SELECT empno,ename,job FROM emp; v_empno emp.empno%TYPE; v_name emp.ename%TYPE; v_job emp.job%TYPE; BEGIN OPEN emp_cursor; LOOP FETCH emp_cursor INTO v_empno,v_name,v_job; EXIT WHEN emp_cursor%NOTFOUND; E...
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The CREATE TABLE statement creates an object table named departments_obj_t of the object type department_typ. CREATE TABLE 语句创建一个名为departments_obj_t 的对象表,其对象类型为 department_typ 。 The attributes (columns) of this table are derived from the definition of the object type. 此表...
defines the thresholdofthe estimated leaf block count--to be smaller than the supplied fractionofthe current size.--vTargetUse:Supplied percentage utilisation.For example90%equates to thedefaultpctfree10--vHistRet:Defines the numberofrecords to keepintheINDEX_HISTtableforeach index entry--CREATEOR...
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See the example insetFormat( ). import( ) Format import(ctx IN OUT RAW set_prop IN BOOLEAN); Description Transfers media data from an external media data source to the source.localData attribute (of the embedded ORDSource object) within the database. ...
CX - Campaign Activity Analysis Object security CX - Subscription CX - Subscription role to control Bill Line presentation catalog access to "CX - Subscription Bill Line" subject area. Common Duty Roles The common duty roles are applicable across the analytics applications that are part of Oracle ...
XMLType issupported. Limitations of support (1)The source and target objects thatcontain the XML must be identical. Filtering and manipulation are notsupported. However, you can map the XML representation of an object to acharacter column by means of a COLMAP clause in a TABLE or MAP statemen...
答案:在Oracle 11.2中,当创建一个空表或者空分区时,为了加快创建速度,Oracle并不会立即分配初始段和空间,实际的表段(Table Segement)被延迟到第一行数据插入时创建。延迟段创建特性通过DEFERRED_SEGMENT_CREATION参数控制,默认为TRUE,表示开启该功能。延迟段创建可以节省空间,加快初始化过程,是面向性能和资源的一个优化...