如何将内联表作为参数发送给接收表的函数？

我需要在WITH子句中使用returning_tbl（），然后将WITH子句创建的内联表作为参数传递给函数。像using_tbl_v2（不此时工作）如何将内联表作为参数发送给接收表的函数？

using_tbl_v1只是事物，它们的例子（但他们是简单的对我来说）。

我意识到，一旦我创建了一个内联表，我退出PLSQL模式并进入SQL模式。但我怎么回去PLSQL模式中提供original_tbl到receiving_tbl（...）

create or replace type SOME_OBJ force as object (
    SOME_VARCHAR varchar2(20 byte) 
); 

create or replace type SOME_TBL is table of SOME_OBJ; 


create or replace function returning_tbl 
    return SOME_TBL pipelined is 

begin 
    for current_row in (
    select 
     'SOME_VALUE' as SOME_VARCHAR 
    from dual 
) 
    loop 
    pipe row (
     SOME_OBJ(
     current_row.SOME_VARCHAR 
    ) 
    ); 
    end loop; 
    return; 
END returning_tbl; 

select * from table(returning_tbl()); 


create or replace function receiving_tbl(tbl SOME_TBL) 
    return SOME_TBL pipelined is 

begin 
    for current_row in (
    with filtered_tbl as (
     select 
     SOME_VARCHAR 
     from table(tbl) 
     where SOME_VARCHAR = 'SOME_VALUE' 
    ) 
    select * from filtered_tbl 
) 
    loop 
    pipe row (
     SOME_OBJ(
     current_row.SOME_VARCHAR 
    ) 
    ); 
    end loop; 
    return; 
END receiving_tbl; 


select * from table(receiving_tbl(returning_tbl())); 


create or replace function using_tbl_v1 
    return SOME_TBL pipelined is 

begin 
    for current_row in (
    with original_tbl as (
     select 
     SOME_VARCHAR 
     from table(returning_tbl()) 
     where SOME_VARCHAR = 'SOME_VALUE' 
    ), 
    outside_inlined_tbl as (--just as example 
     select * from table(receiving_tbl(returning_tbl())) 
    ) 
    select * from outside_inlined_tbl 
) 
    loop 
    pipe row (
     SOME_OBJ(
     current_row.SOME_VARCHAR 
    ) 
    ); 
    end loop; 
    return; 
END using_tbl_v1; 


select * from table(using_tbl_v1()); 


create or replace function using_tbl_v2 
    return SOME_TBL pipelined is 

begin 

    for current_row in (
    with original_tbl as (
     select 
     SOME_VARCHAR 
     from table(returning_tbl()) 
     where SOME_VARCHAR = 'SOME_VALUE' 
    ), 
    outside_tbl as (
     select * from table(receiving_tbl(original_tbl)) 
    ) 
    select * from outside_tbl 
) 
    loop 
    pipe row (
     SOME_OBJ(
     current_row.SOME_VARCHAR 
    ) 
    ); 
    end loop; 
    return; 
END using_tbl_v2; 


select * from table(using_tbl(_v2));

来源

2016-11-09 Belun

替换：

with original_tbl as (
    select 
    SOME_VARCHAR 
    from table(returning_tbl()) 
    where SOME_VARCHAR = 'SOME_VALUE' 
), 
outside_tbl as (
    select * from table(receiving_tbl(original_tbl 
)) 
) 
select * from outside_tbl

有了：

with original_tbl as (
    select 
    SOME_VARCHAR 
    from table(returning_tbl()) 
    where SOME_VARCHAR = 'SOME_VALUE' 
), 
outside_tbl as (
    select * from table(receiving_tbl(
    (select cast(collect(SOME_OBJ(SOME_VARCHAR)) as SOME_TBL) from original_tbl) 
)) 
) 
select * from outside_tbl

我我想补充一些关于这里发生的事情的简单解释。但这个例子非常复杂，我不确定是否有任何简单的教训可以在这里学习。

来源

2016-11-15 03:31:41

如何将内联表作为参数发送给接收表的函数？

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