我有一个plsql程序,它接受一组数据并更新一堆记录,我可以使用for循环执行此操作。我真的可以使用一些帮助找出没有循环的事情。
套餐规格和正文:
create or replace PACKAGE ARRAY_EXAMPLE AS
type arrtype is table of test_table.name%TYPE index by pls_integer;
PROCEDURE PROCESS_ARRAY( stringArrayIn IN arrtype
, p_city varchar2
, p_phone number);
END;
/
create or replace PACKAGE BODY ARRAY_EXAMPLE AS
PROCEDURE PROCESS_ARRAY( stringArrayIn IN arrtype
, p_city varchar2
, p_phone number) IS
BEGIN
FOR i IN 1..stringArrayIn.Count
LOOP
update test_table t
set t.city = p_city
where t.name = stringArrayIn(i)
and t.phone = p_phone;
END LOOP;
END;
END;
/
我想拥有的内容:
create or replace PACKAGE BODY ARRAY_EXAMPLE AS
PROCEDURE PROCESS_ARRAY( stringArrayIn IN arrtype
, p_city varchar2
, p_phone number) IS
BEGIN
update test_table t
set t.city = p_city
where t.phone = p_phone
and t.name in (stringArrayIn);
END;
END;
我在尝试上述操作时遇到错误,请帮忙。非常感谢你。
答案 0 :(得分:2)
您需要在SQL而不是PL / SQL中定义集合:
create type arrtype is table of VARCHAR2(100);
create or replace PACKAGE BODY ARRAY_EXAMPLE AS
PROCEDURE PROCESS_ARRAY(
stringArrayIn IN arrtype
, p_city IN varchar2
, p_phone IN number
)
IS
BEGIN
update test_table t
set t.city = p_city
where t.phone = p_phone
and t.name MEMBER OF stringArrayIn
END;
END;
/
<强>更新强>
在实例化时初始化一个数组:
DECLARE
t_names ARRTYPE := t_names( 'Alice', 'Bob', 'Charlie' );
BEGIN
ARRAY_EXAMPLE.PROCESS_ARRAY(
t_names,
'New York City',
'555-2368'
);
END;
/
稍后填充数组:
DECLARE
t_names ARRTYPE;
BEGIN
t_names := ARRTYPE();
t_names.EXTEND(3);
t_names(1) := 'Alice';
t_names(2) := 'Bob';
t_names(3) := 'Charlie';
ARRAY_EXAMPLE.PROCESS_ARRAY(
t_names,
'New York City',
'555-2368'
);
END;
/
从第二个示例中可以看出,数组元素仍然被编入索引。
答案 1 :(得分:1)
如果在数据库级别创建类型 arrtype ,则可以使用:
t.name in (select column_value from table(stringArrayIn))
答案 2 :(得分:1)
如果您可以在SQL级别定义类型,则可以执行以下操作:
create type SQL_arrtype is table of varchar2(50) /* for example, it is the type of your name field */
CREATE OR REPLACE PACKAGE ARRAY_EXAMPLE AS
PROCEDURE PROCESS_ARRAY(
stringArrayIn IN SQL_arrtype,
p_city VARCHAR2,
p_phone NUMBER
);
END;
CREATE OR REPLACE PACKAGE BODY ARRAY_EXAMPLE AS
PROCEDURE PROCESS_ARRAY(
stringArrayIn IN SQL_arrtype,
p_city VARCHAR2,
p_phone NUMBER
) IS
BEGIN
forall i in 1 .. stringArrayIn.COUNT
UPDATE test_table t
SET t.city = p_city
WHERE t.name = stringArrayIn(i)
AND t.phone = p_phone;
END;
END;
FORALL将比循环中的单个更新更有效。