創建和調用PL/SQL函數

Question

我是PL/SQL的新手。現在情況一直很好。 我有查詢這個查詢哪些工作正常。

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; 

我現在想要創建一個包含上述代碼的函數，因此我可以使用單個SQL或PL/SQL查詢來調用它。這對我來說很頭疼。

Answer 1

如果現在一切正常，請嘗試使用CURSOR作爲IN參數在存儲的FUNCTION中完成所有操作，以返回NUMBER。瞭解變量類型和遊標。 Oracle docs應該足以讓你自己做。

之後，如果您遇到代碼問題，請在此處發帖，您當然會獲得幫助。

Answer 2

你可以把它pipelined function：

首先您需要的表類型：

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

然後，讓你的代碼的流水線功能：

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; 

現在，你可以這樣打電話/查詢：

select * from table(your_func)