可以在selectinto,fetchinto,returning into语句使用bulk collect。 注意在使用bulk collect时,所有的into变量都必须是collections. 举几个简单的例子:--在select into语句中使用bulk collectDECLARETYPE SalListISTABLEOFemp.sal%TYPE; sals SalList;BEGIN--Limit the number of rows to 100.SELECTsalBULKCOLLECTINTOsa...
--创建测试表create tablebulk_objectstablespace usersasselect object_name, object_type from dba_objects;--定义模拟批量所需变量DECLARETYPE t_tab IS TABLE OF bulk_objects%ROWTYPE;objects_tab t_tab := t_tab();start_time number; end_time number;BEGINSELECT *BULK COLLECT INTO objects_...
通过bulk collect减少loop处理的开销 采用bulk collect可以将查询结果一次性地加载到collections中。 而不是通过cursor一条一条地处理。 可以在select into,fetch into,returning into语句使用bulk collect。 注意在使用bulk collect时,所有的into变量都必须是collections. 举几个简单的例子: --在select into语句中使用bul...
BULK COLLECT:1回のフェッチで複数の行を取得するSELECT文。データ取得が高速化される FORALL:コレクションを使用してデータの複数行をすばやく変更するINSERT、UPDATE、DELETE ここでのすばやくとはどういう意味か、これらの機能が持つ実際の影響度はどれほどなのかという疑問を持つかもしれません。
TheBULK COLLECT INTO clause can improve the performance of queries that reference collections. You can use BULK COLLECT INTO with tables of scalar values, or tables of %TYPE values. The PL/SQL block inExample 6-10queries multiple values into PL/SQL tables, with and without bulk binds. Withou...
insert/*+append*/intob_objectselectobject_name,object_type,created,rownum+1997760idfromb_object 1. 2. 3. 57.688秒最快 bulk collect insert into 1. declaretype t_object is table of b_object.object_name%type index by binary_integer;
The BULK COLLECT INTO clause can improve the performance of queries that reference collections. You can use BULK COLLECT INTO with tables of scalar values, or tables of %TYPE values. The PL/SQL block in Example 6-10 queries multiple values into PL/SQL tables, with and without...
bulk Insert ---0.441秒 环境: oracle 10.2.0.3 Windows 2000Server java 代码: 复制 SQL>desc aName Type Nullable Default Comments--- --- --- --- ---ID INTEGER YNAME VARCHAR2(20) Y 1. 2. 3. 4. 5. bulk Insert 使用的类型及过程 ...
Insert 硌隅今木凶坰竘卞丐月戊伊弁扑亦件卞陔 及OracleBulkCopyColumnMapping左皮斥尼弁玄毛 溜諵楔牏飽 Remove OracleBulkCopyColumnMappingCollection井日硌隅今木凶OracleBulkCopyColumnMapping猁匼毛祅壺仄引允﹝ RemoveAt 硌隅今木凶坰竘卞丐月戊伊弁扑亦件井日穴永疋件弘毛祅壺仄引允﹝ ...
TheBULK COLLECT INTO clause can improve the performance of queries that reference collections. You can use BULK COLLECT INTO with tables of scalar values, or tables of %TYPE values. The PL/SQL block inExample 6-10queries multiple values into PL/SQL tables, with and without bulk binds. Withou...