field1 datatype, field2 datatype, … ); variable_name record_type; BEGIN –code END; 声明表类型: DECLARE TYPE table_type IS TABLE OF datatype; variable_name table_type; BEGIN –code END; 需要注意的是,DECLARE语句必须在BEGIN和
7. v_emp_table.COUNT 用来 v_emp_table 里面的数量 8. (i)表示下标号 例2: 批量 更新部门号为 "10" 的员工工资 DECLARE TYPE ename_table_type IS TABLE OF my_emp.ename%TYPE; TYPE sal_table_type IS TABLE OF my_emp.sal%TYPE; v_ename_table ename_table_type; v_sal_table sal_table_typ...
type 变量 is table of 类型 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: declaretype t_tableistableofvarchar2(10) indexby BINARY_in...
DECLARE TYPE emp_names IS TABLE OF employees.last_name%TYPE; emp_names_tab emp_names; BEGIN SELECT last_name BULK COLLECT INTO emp_names_tab FROM employees; -- 使用table()函数将单个字段的集合类型转换为表 SELECT * FROM TABLE(emp_names_tab); END; / 复制代码 使用嵌套表类型: DECLARE TYPE...
oracle中type的使用 create or replace type mytype IS TABLE OF varchar2(20); declare type1 mytype :=mytype('1','2','3','4'); i number:=1; var_str varchar(20):='liaomin'; begin type1.EXTEND; type1(type1.COUNT):=var_str;...
3)、处理作用在多行上的动态DML语句返回子句 declare type ename_table_type is table of emp.ename%type index by binary_integer; type sal_table_type is table of emp.sal%type index by binary_integer; ename_table ename_table_type; sal_table sal_table_type; v_sql varchar2(100); begin v_sql...
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...
6、 index_by表 type type_name is table of element_type [not null] index by binary_interger; declare type table_empno_type is table of emp.empno%type index by binary_integer; table_empno table_empno_type; i binary_integer:=1; begin select empno into table_empno(i) from emp where empn...
EXEC SQL DECLARE project_type TYPE AS OBJECT( pno CHAR(5), pname CHAR(20), budget NUMBER); EXEC SQL DECLARE project_array TYPE as VARRAY(20) OF project_type ; EXEC SQL DECLARE employees TYPE AS TABLE OF emp_objects ; 関連項目 ...
oracle表类型、条件语句、循环语句(Oracle table types, conditional statements, loop statements) One-dimensional table data types (understood as arrays) Cases: SET SERVEROUTPUT ON; DECLARE TYPE, tabletype1, IS, TABLE, OF, VARCHAR2 (20), INDEX, BY, BINARY_INTEGER, - binary integer index Table1...