实际上我正在尝试更新1000条记录,我正在为每5000条记录做一次提交。但由于我对varray的限制,我得到了上述错误。请为数组数据类型提供替代方案,以便将100k键值存储为数组!代码示例如下。
DECLARE
v_initial number(6):=0;
v_final number(6):=5000;
-- TOtal number of records V_COUNT
type lnum IS VARRAY(1000) OF INTEGER; -- change total number of records
iid lnum;
v_maxnum number(8):=0;
BEGIN
iid:=lnum(); -- here 1000 values will be given
v_maxnum := iid.count;
FOR i in v_initial..v_maxnum LOOP
UPDATE table SET status='E' WHERE pkey=iid(i);
IF i=v_final THEN
COMMIT;
v_initial:=v_final+1;
v_final:=v_final+5000;
END IF;
IF i=v_maxnum THEN
commit;
END IF;
EXIT WHEN i= v_maxnum;
END LOOP;
END;
/
答案 0 :(得分:0)
将v_initial初始化为1而不是0.Varray索引从1开始。
此外,这是另一种提交每个X记录的技巧,您可能需要考虑简单:
commit_count_const CONSTANT number := 5000; -- commit every 5000
v_loop_counter := 0
...
FOR i in...
UPDATE...
v_loop_counter := v_loop_counter + 1; -- Increment counter
-- If the remainder of the counter divided by commit_count_const is 0,
-- then we hit a multiple of the commit_count so commit.
IF MOD(v_loop_counter, commit_count_const) = 0 THEN
COMMIT;
end if;
...
END LOOP;
COMMIT; -- commit to catch the rows updated since the last commit.
...
哦,不要忘记添加错误处理,如果UPDATE或COMMIT失败怎么办?