TYPE orders_type IS TABLE OF all_orders%ROWTYPE; 4.2:用法 1. TYPE tabletypeISTABLEOFtypeINDEXBYBINARY_INTEGER; 定义:TYPE t_charTableISTABLEOFVARCHAR2(10)INDEXBYBINARY_INTEGER; 引用:tableName(index); 例子: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 declare type t_tableis...
INDEX BY BINARY_INTEGER这里是定义数组下标是整数,因为ORACLE中下标可以是字符串.VARCHAR2(4)这是定义数组里面只能放字符串 column_select TABLE_COL; 定义了一个TABLE_COL类型的变量column_select 因为TABLE_COL被定义成了数组类型,所以column_select 就相当于是一个数组啦....
declare type al_table_typeistable of int index by binary_integer;type nal_table_typeistable of al_table_type index by binary_integer;nvl nal_table_type;--初始化 beginnvl(1)(1):=10;nvl(1)(2):=5;nvl(2)(1):=100;nvl(2)(2):=50;dbms_output.put_line('显示二维索引表的所有元素:...
2. Type 声明是类型 emp_table_typ e 类型的名字 3. IS TABLE OF , 简单的来说就是一个可以存储一列多行的数据类型 ,my_emp 指出在哪个表上( 存在的表 )%ROWTYPE 指在表上的行的数据类型. 4. INDEX BY BINARY_INTEGER 指索引组织类型 5. v_emp_table 定义一个变量来存储集合数据类型 6. BULK CO...
type emp_table_type is table of emp%rowtype index by binary_integer; var_emp_table emp_table_type; begin select * bulk collect into var_emp_table from emp; /*输出雇员信息*/ for i in 1..var_emp_table.COUNT loop dbms_output.put_line('雇员名称:'||var_emp_table(i).ename||' 职务...
1oracle变量表类型declaretype my_emp is table of scott.emp%rowtypeindex by binary_integer;new_emp my_emp;v_num number:=0;cursor cur_emp is select empno,ename,job,sal from scott.emp;--1.cursor 是个什么东东?beginfor v_emp in cur_emp loop --2.v_emp是个什么东东?怎么和正常for语句不一...
CURSOR CUR_FIRST_INDEX IS SELECT A.ID A_ID, --一级指标ID A.INDEXNAME A_INDEXNAME --一级指标名称 FROM INDEX_A A ORDER BY A_ID; /*定义游标变量,该变量的类型为基于游标CUR_FIRST_INDEX的行记录*/ ROW_CUR_FIRST_INDEX CUR_FIRST_INDEX%ROWTYPE; ...
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segment_type ='INDEX' and t.segment_name in ('索引名1','索引名2') GROUP BY t.owner,t.segment_name ORDER BY SUM(bytes) desc; 5、查看UNUSABLE状态索引 代码语言:javascript 复制 select index_name,table_name,TABLESPACE_NAME,STATUS from dba_indexes where status ='UNUSABLE'; 6、查看dba_...
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