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SERV_CRM_IN_200908,SERV_CRM_IN_200907,SERV_CRM_IN_200906
ÎÒҪдһ¸öº¯Êý£¬¸ù¾Ý´«ÈëµÄµÄSERV_IDÈ¡µÃ¸ÃIDËù¶ÔÓ¦µÄysje×Ö¶ÎÈý¸öÔÂµÄÆ½¾ùÖµ£¬ÇëÎʸÃÈçºÎ½â¾ö£¿
ÿһ¸ö±íµÄsum(ysje)È»ºóÔÚ·µ»ØÊ±Èý¸ö±íÏà¼Ó£¬È»ºóÔÙ³ýÒÔ3
 

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SQL code:
create or replace function fun( v_serv_id in varchar2
, v_tbl_1 in varchar2
, v_tbl_2 in varchar2
, v_tbl_3 in varchar2)
return number
is
v_out number := 0;
v_tmp number := 0;
begin
begin
execute immediate 'select sum(ysje) from '||v_tbl_1||' where SERV_ID = '||v_serv_id
into v_out;
exception
when no_data_found then
v_out := 0;
end;
begin
execute immediate 'select sum(ysje) from '||v_tbl_2||' where SERV_ID = '||v_serv_id
into v_tmp;
exception
when no_data_found then
v_tmp := 0;
end;
v_out := v_out + v_tmp;
v_tmp := 0;
begin
execute immediate 'select sum(ysje) from '||v_tbl_3||' where SERV_ID = '||v_serv_id
into v_tmp;
exception
when no_data_found then
v_tmp := 0;
end;
v_out := (v_out + v_tmp) / 3;
return v_out;

{


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