17,086
社区成员
发帖
与我相关
我的任务
分享
FETCH v_rows BULK COLLECT
INTO v_rowidarray, v_fff LIMIT 10000;
FORALL i IN 1 .. v_rowidarray.count()
declare
type id_table_type is table of number(6)
index by binary_integer;
type name_table_type is table of varchar2(10)
index by binary_integer;
id_table id_table_type;
name_table name_table_type;
start_time number(10);
end_time number(10);
begin
for i in 1..5000 loop
id_table(i):=i;
name_table(i) := 'name'||i;
end loop;
start_time :=dbms_utility.get_time;
for i in 1..id_table.count loop
insert into demo values(id_table(i),name_table(i));
end loop;
end_time := dbms_utility.get_time;
dbms_output.put_line('不使用批量插入数据总计时间:'||to_char((end_time-start_time)/100));
for i in 5001..10000 loop
id_table(i):=i;
name_table(i) := 'name'||i;
end loop;
start_time :=dbms_utility.get_time;
forall i in 5001..id_table.count
insert into demo values(id_table(i),name_table(i));
end_time := dbms_utility.get_time;
dbms_output.put_line('使用批量插入数据总计时间:'||to_char((end_time-start_time)/100));
for i in 5001..10000 loop
id_table(i):=i;
name_table(i) := 'N'||i;
end loop;
start_time :=dbms_utility.get_time;
forall i in 5001..id_table.count
update demo set name=name_table(i) where id =id_table(i);
end_time := dbms_utility.get_time;
dbms_output.put_line('使用批量更新数据总计时间:'||to_char((end_time-start_time)/100));
for i in 1..10000 loop
id_table(i):=i;
end loop;
start_time :=dbms_utility.get_time;
forall i in 1..id_table.count
DELETE FROM demo where id=id_table(i);
end_time := dbms_utility.get_time;
dbms_output.put_line('使用批量删除数据总计时间:'||to_char((end_time-start_time)/100));
end;
运行结果: 不使用批量插入总计时间:.96
使用批量插入总计时间:.04
使用批量更新总计时间:.64
使用批量删除总计时间:2.98