oracle呼叫子儲存過程 游標迴圈例項

一，有子節點的部門的子節點的排序，呼叫子儲存過程

create or replace procedure "pro_init_sort" as

cursor cur_department_all is select * from tbl_department;
var_count number ;
var_out_count number := 0;
begin
for department_row in cur_department_all loop
select count(1) into var_count from tbl_department where unit_id = department_row.unit_id and department_supercode = department_row.department_code ;
--上述查詢的是有所有的子節點的部門
if var_count != 0 then
--dbms_output.put_line(department_row.unit_id||'-'||department_row.department_code||'-'||var_count);
pro_init_department_sort(department_row.unit_id , department_row.department_id) ;
end if ;
var_out_count := var_out_count + 1 ; 
end loop ; 
dbms_output.put_line('總數：'||var_out_count);
end pro_init_sort ;

create or replace procedure "pro_init_department_sort"

( unit_id in number ,
super_code in number 
)-- 初始化tbl_department表的department_sort欄位 以同department_supercode方式查詢使用rownum值更新department_sort欄位
as -- cursor cur_department is select * from tbl_department where unit_id = target_unit_id and department_supercode = target_supercode order by department_sort asc;
cursor cur_department is select rownum rn , d.* from tbl_department d where unit_id = unit_id and department_supercode = super_code;
begin
for department_row in cur_department loop
update tbl_department set department_sort = department_row.rn where department_id = department_row.department_id ;
-- null ;
end loop ;
-- null;
end pro_init_department_sort;

注意：count(1)和count(*)

在資料記錄都不為空的時候查詢出來結果上沒有差別的.

但當count(1)查詢的那列有空的時候空的是要被去掉的不記入統計中.這樣查詢出來的結果是不一樣的.

二，沒有子節點的排序

create or replace procedure "int_sort_n" as

p_out number;
p_count number:=0;
cursor cur_department is select t.unit_id from tbl_department t group by t.unit_id order by t.unit_id;
begin
for dep_row in cur_department loop
select count(1) into p_out from tbl_department t where t.unit_id = dep_row.unit_id and t.department_supercode = 0;
dbms_output.put_line('uid--'||dep_row.unit_id||'--部門--'||p_out);
int_deparment_sort(dep_row.unit_id);
p_count := p_count + 1;
end loop;
dbms_output.put_line('總數:'||p_count);
end;

create or replace procedure int_deparment_sort(unit_id2 in number) as

cursor department_all is select rownum rn,t.* from tbl_department t where t.unit_id = unit_id2 and t.department_supercode = 0 order by t.department_id;
begin
for dep_row in department_all loop
--dbms_output.put_line('---'||unit_id2);
update tbl_department t set t.department_sort = dep_row.rn where t.department_id = dep_row.department_id; 
end loop; 
end int_deparment_sort;

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