ORA-00937:not a single-group group function|ORA-06512:at"schema.procedure n

Question

ORA-00937:not a single-group group function|ORA-06512:at"schema.procedure name)?
The details of this procedure are the emp table is used in the emp1 which is shown in line 19
1 DECLARE
2 cur_emp sys_refcursor;
3 TYPE t_tab IS TABLE OF emp%ROWTYPE;
4 tt t_tab;
5 cur_emp1 sys_refcursor;
6 TYPE t1_tab IS TABLE OF emp1%ROWTYPE;
7 tt1 t1_tab;
8 BEGIN
9 OPEN cur_emp FOR
10 SELECT c1,c2,c3 FROM t1,t2,t3 where t1.c1=t2.c2 and t1.c1=t3.c3;
11 LOOP
12 FETCH cur_emp BULK COLLECT INTO tt LIMIT 100000;
13 EXIT WHEN tt.COUNT=0;
14 FOR i IN 1..tt.COUNT LOOP
15 insert in to emp (c1,c2,c3) values (tt(i).c1,tt(i).c2,tt(i).c3;
16 END LOOP;
17 END LOOP;
18 OPEN cur_emp FOR
19 SELECT c11,c12,c13 FROM emp,t12,t13 where emp.c11=t12.c12 and t11.c11=t13.c13;
20 LOOP
21 FETCH cur_emp1 BULK COLLECT INTO tt1 LIMIT 100000;
22 EXIT WHEN tt1.COUNT=0;
23 FOR j IN 1..tt1.COUNT LOOP
24 insert in to emp1 (c11,c12,c13) values (tt1(j).c11,tt1(j).c12,tt1(j).c13;
25 END LOOP;
26 END LOOP;
27 END;
/

Answer 1

ORA-00937:not a single-group group function|ORA-06512:at"schema.procedure name)?
The details of this procedure are the emp table is used in the emp1 which is shown in line 19
1 DECLARE
2 cur_emp sys_refcursor;
3 TYPE t_tab IS TABLE OF emp%ROWTYPE;
4 tt t_tab;
5 cur_emp1 sys_refcursor;
6 TYPE t1_tab IS TABLE OF emp1%ROWTYPE;
7 tt1 t1_tab;
8 BEGIN
9 OPEN cur_emp FOR
10 SELECT c1,c2,c3 FROM t1,t2,t3 where t1.c1=t2.c2 and t1.c1=t3.c3;
11 LOOP
12 FETCH cur_emp BULK COLLECT INTO tt LIMIT 100000;
13 EXIT WHEN tt.COUNT=0;
14 FOR i IN 1..tt.COUNT LOOP
15 insert in to emp (c1,c2,c3) values (tt(i).c1,tt(i).c2,tt(i).c3);
16 END LOOP;
17 END LOOP;
18 OPEN cur_emp FOR
19 SELECT c11,c12,c13 FROM emp,t12,t13 where emp.c11=t12.c12 and emp.c11=t13.c13;
20 LOOP
21 FETCH cur_emp1 BULK COLLECT INTO tt1 LIMIT 100000;
22 EXIT WHEN tt1.COUNT=0;
23 FOR j IN 1..tt1.COUNT LOOP
24 insert in to emp1 (c11,c12,c13) values (tt1(j).c11,tt1(j).c12,tt1(j).c13);
25 END LOOP;
26 END LOOP;
27 END;