快捷導(dǎo)航

oracle存儲(chǔ)過程中return和exit區(qū)別概述及測試

更新時(shí)間：2013年02月25日 08:58:56 作者：

至于return和exit在oracle存儲(chǔ)過程中的應(yīng)用，有些新手朋友們還是比較容易混淆的，本文將針對(duì)這兩個(gè)關(guān)鍵字進(jìn)行詳細(xì)對(duì)比下，感興趣的你可以參考下，希望可以幫助到你

復(fù)制代碼代碼如下:

 
create or replace procedure Test5(o_cellphone in varchar2) is 
v_cellphone cc_quiz_stat.cellphone %type; 
v_name cc_quiz_stat %rowtype; 
v_state cc_quiz_stat.state %type; 
begin 
declare 
cursor cur_cc is 
select * from cc_quiz_stat; 
cursor cur_jc(v_n varchar2) is 
select state from cc_quiz_stat; 
begin 
open cur_cc; 
loop 
fetch cur_cc 
into v_name; 
exit when cur_cc%notfound; 
open cur_jc(o_cellphone); 
loop 
fetch cur_jc 
into v_state; 
exit when cur_jc %notfound; 
if (o_cellphone = v_name.cellphone) then 
return; 
else 
dbms_output.put_line('手機(jī)號(hào)' || v_name.cellphone || '省份' || 
v_state); 
end if; 
end loop; 
close cur_jc; 
end loop; 
close cur_cc; 
end; 
end Test5; 

執(zhí)行結(jié)果
手機(jī)號(hào)18900000000省份全國
手機(jī)號(hào)18900000000省份南京
手機(jī)號(hào)18900000000省份天津
手機(jī)號(hào)18900000000省份上海
手機(jī)號(hào)18900000000省份北京

復(fù)制代碼代碼如下:

 
create or replace procedure Test5(o_cellphone in varchar2) is 
v_cellphone cc_quiz_stat.cellphone %type; 
v_name cc_quiz_stat %rowtype; 
v_state cc_quiz_stat.state %type; 
begin 
declare 
cursor cur_cc is 
select * from cc_quiz_stat; 
cursor cur_jc(v_n varchar2) is 
select state from cc_quiz_stat; 
begin 
open cur_cc; 
loop 
fetch cur_cc 
into v_name; 
exit when cur_cc%notfound; 
open cur_jc(o_cellphone); 
loop 
fetch cur_jc 
into v_state; 
exit when cur_jc %notfound; 
if (o_cellphone = v_name.cellphone) then 
exit; 
else 
dbms_output.put_line('手機(jī)號(hào)' || v_name.cellphone || '省份' || 
v_state); 
end if; 
end loop; 
close cur_jc; 
end loop; 
close cur_cc; 
end; 
end Test5; 

執(zhí)行結(jié)果
手機(jī)號(hào)18900000000省份全國
手機(jī)號(hào)18900000000省份南京
手機(jī)號(hào)18900000000省份天津
手機(jī)號(hào)18900000000省份上海
手機(jī)號(hào)18900000000省份北京
手機(jī)號(hào)18900000002省份全國
手機(jī)號(hào)18900000002省份南京
手機(jī)號(hào)18900000002省份天津
手機(jī)號(hào)18900000002省份上海
手機(jī)號(hào)18900000002省份北京
手機(jī)號(hào)18900000003省份全國
手機(jī)號(hào)18900000003省份南京
手機(jī)號(hào)18900000003省份天津
手機(jī)號(hào)18900000003省份上海
手機(jī)號(hào)18900000003省份北京
手機(jī)號(hào)18900000004省份全國
手機(jī)號(hào)18900000004省份南京
手機(jī)號(hào)18900000004省份天津
手機(jī)號(hào)18900000004省份上海
手機(jī)號(hào)18900000004省份北京

return 跳出整個(gè)循環(huán)，本循環(huán)后面的不再執(zhí)行，
exit 跳出本次循環(huán)，下次繼續(xù)執(zhí)行本次循環(huán)

您可能感興趣的文章: