创建并调用PL / SQL函数 [英] Creating and calling PL/SQL functions

问题描述

我是PL / SQL的新手。它一直很好，直到现在是。
我查询这个查询是否正常。

I'm new to PL/SQL. It's been on fine until now that is. I've the query this query which works fine.

declare
rec employees_practice%rowtype;
sam taxObligations%rowtype;
socialsecurity number;
rentallowance number;
transportation number;
taxableincome number;
incometaxliability number;
netpay number;
total number;
totaldeductions number;

    begin
    for rec in (select * from employees_practice)
    loop
    socialsecurity:=(5.5/100)*(rec.salary);
    rentallowance:=(20/100)*(rec.salary);
    if(rec.Category='S') 
    then transportation:= 150; 
    else transportation:=100;
    end if;

taxableincome:=rec.Salary-socialsecurity+rentallowance+transportation;

for sam in (select * from taxObligations) 
loop
if(taxableincome between sam.Minincome and sam.Maxincome)
then incometaxliability:= sam.MinimumBracketTax + (taxableincome-sam.Minincome)*(sam.TaxBracketRate/100);
else incometaxliability:=null;
end if;
end loop;
netpay:= taxableincome-incometaxliability;
total:= rec.Salary + rentallowance + transportation;

totaldeductions:=socialsecurity + incometaxliability;

-- Here, I used DBMS.... to give an output in different format.

end loop; 
end;

我现在想创建一个包含上述代码的函数，所以我可以使用单个SQL或PL / SQL查询。

I now want to create a function that encompasses the above code so I can call it with a single SQL or PL/SQL Query. It's been a headache for me.

推荐答案

你可以使它成为一个管道功能：

首先你需要一个表类型：

first you'll need a table type:

create or replace type result_tab as table of varchar2(32767);

然后，使您的代码成为管道函数：

Then, make your code a pipelined function:

create or replace function your_func return result_tab PIPELINED is

rec employees_practice%rowtype;
sam taxObligations%rowtype;
socialsecurity number;
rentallowance number;
transportation number;
taxableincome number;
incometaxliability number;
netpay number;
total number;
totaldeductions number;

    begin
    for rec in (select * from employees_practice)
    loop
    socialsecurity:=(5.5/100)*(rec.salary);
    rentallowance:=(20/100)*(rec.salary);
    if(rec.Category='S') 
    then transportation:= 150; 
    else transportation:=100;
    end if;

taxableincome:=rec.Salary-socialsecurity+rentallowance+transportation;

for sam in (select * from taxObligations) 
loop
if(taxableincome between sam.Minincome and sam.Maxincome)
then incometaxliability:= sam.MinimumBracketTax + (taxableincome-sam.Minincome)*(sam.TaxBracketRate/100);
else incometaxliability:=null;
end if;
end loop;
netpay:= taxableincome-incometaxliability;
total:= rec.Salary + rentallowance + transportation;

totaldeductions:=socialsecurity + incometaxliability;

-- Here, I used PIPE ROW() to give an output in different format.
pipe row('what ever you had in your dbms_output command');

end loop; 

return;

end your_func;

现在，您可以像这样调用/查询：

Now, you can call / query it like this:

select * from table(your_func)

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