Question

我正在尝试执行我为Oracle中的数据转换而开发的脚本。

我有一个包含大量数据的表，我想根据条件将该数据拆分到另一个表中，然后从原始表中删除受影响的行。

我的方法是使用create table作为第二个表的select，然后将第二个表与第一个表相同，条件反转。最后，我截断了原始表，并将数据移回临时表中的原始数据。像这样：

create table data_reject as
select a, b, c
from table_original
where a in (select criteria from aux_table)
/

然后

create table data_aux as
select a, b, c
from table_original
where a NOT in (select criteria from aux_table)
/

最后我会做

truncate table data_original
/

和

insert into table_original (a, b, c)
select a, b, c
from table_aux
/

我的问题是我在所有select和create table命令上放置了一个并行提示，看起来发出了一条语句，下一条语句开始执行而不等待第一条语句结束执行。

这导致原始表在脚本有时间填充其他两个表之前丢失了所有数据。

使用命令

执行此脚本

alter session enable parallel dml

如何阻止一个命令在前一个命令结束执行之前启动？

这是脚本的样子： - 创建临时表 create table id_loc_rejected_temp parallel 32 nologging as 同 id_hier为（选择hierarchy7_key作为id_hierarchy中的id）， loc_hier为（选择hierarchy6_key作为loc_hierarchy的loc）

     select /* + PARALLEL (a, 32) */
            id_key,
            loc_key
       from sls a
      where a.id_key not in (select key from merch_hier)
     union all

     select /* + PARALLEL (a, 32) */
            id_key,
            loc_key
       from sls a
      where a.loc_key not in (select store from loc_hier)
     union all

     select /* + PARALLEL (a, 32) */
            id_key,
            loc_key
       from id_loc_rejected_previous a
  /

  insert into debug_msg values(sysdate, 'First filter. Inserted ' || SQL%ROWCOUNT || ' rows')
  /
  commit
  /

  --add more filters
  insert /* + APPEND PARALLEL (id_loc_rejected_temp, 32) */
    into id_loc_rejected_temp(id_key,
                                loc_key)
        with
           store_repl as
              (select /* + PARALLEL (t, 32) */ id_key as id, loc_key as store from srep t)

        select /* + PARALLEL (a, 32) */
               id_key,
               loc_key
          from sls a
         where (a.id_key, a.loc_key) not in (select id, store from store_repl)
        union all

        select /* + PARALLEL (a, 32) */
               id_key,
               loc_key
          from inv a
         where (a.id_key, a.loc_key) not in (select id, store from store_repl)

  /

  insert into debug_msg values(sysdate, 'Second filter. Inserted ' || SQL%ROWCOUNT || ' rows')
  /
  commit
  /

  -- remove duplicates
  create table id_loc_rejected parallel 32 nologging as
  select /* + PARALLEL (a, 32) */ distinct id_key, loc_key from id_loc_rejected_temp a
  /

  insert into debug_msg values(sysdate, 'Transformed temp table into final table. Inserted ' || SQL%ROWCOUNT || ' rows')
  /
  commit
  /

  drop table id_loc_rejected_temp
  /

  insert into debug_msg values(sysdate, 'Dropped id loc rejected temp table')
  /

  -- Create rejected data tables
  create table sls_rejected parallel 32 nologging as
        select /* + PARALLEL (a, 32) */
               id_key,
               id_level,
               loc_key,
               loc_level,
               date1,
               ticket,
               units
          from sls a
         where (a.id_key, a.loc_key) in (select id_key, loc_key from id_loc_rejected)
  /

  insert into debug_msg values(sysdate, 'Sales rejected created. Inserted ' || SQL%ROWCOUNT || ' rows')
  /
  commit
  /

  -- inventory reject table
  create table inv_rejected parallel 32 nologging as
        select /* + PARALLEL (a, 32) */
               id_key,
               id_level,
               loc_key,
               loc_level,
               date1,
               ticket,
               units
          from inv a
         where (a.id_key, a.loc_key) in (select id_key, loc_key from id_loc_rejected)
  /

  insert into debug_msg values(sysdate, 'Inventory rejected created. Inserted ' || SQL%ROWCOUNT || ' rows')
  /
  commit
  /

  -- stockouts reject table
  create table oos_rejected parallel 32 nologging as
        select /* + PARALLEL (a, 32) */
               id_key,
               id_level,
               loc_key,
               loc_level,
               date1,
               ticket,
               flag
          from oos a
         where (a.id_key, a.loc_key) in (select id_key, loc_key from id_loc_rejected)
  /

  insert into debug_msg values(sysdate, 'Stockout rejected created. Inserted ' || SQL%ROWCOUNT || ' rows')
  /
  commit
  /

  -- store replenishment reject table
  create table stg_ro_st_re_rejected parallel 32 nologging as
        select /* + PARALLEL (a, 32) */
               id_key,
               loc_key,
               review
          from srep a
         where (a.id_key, a.loc_key) in (select id_key, loc_key from id_loc_rejected)
  /

  insert into debug_msg values(sysdate, 'Store replenishment parameters rejected created. Inserted ' || SQL%ROWCOUNT || ' rows')
  /
  commit
  /

  -- now, create temp tables to hold the rest of the data (what we want to keep)
  -- sales temp table
  create table sls_tmp parallel 32 nologging as
        select /* + PARALLEL (a, 32) */
               id_key,
               id_level,
               loc_key,
               loc_level,
               date1,
               ticket,
               ticket
          from sls a
         where (a.id_key, a.loc_key) not in (select id_key, loc_key from id_loc_rejected)
  /

  insert into debug_msg values(sysdate, 'Sales temp created. Inserted ' || SQL%ROWCOUNT || ' rows')
  /
  commit
  /

  -- Store replenishmment temp table
  create table stg_ro_store_repl_tmp parallel 32 nologging as
        select /* + PARALLEL (a, 32) */
               id_key,
               loc_key,
               review
          from srep a
         where (a.id_key, a.loc_key) not in (select id_key, loc_key from id_loc_rejected)
  /

  insert into debug_msg values(sysdate, 'Store replenishment temp created. Inserted ' || SQL%ROWCOUNT || ' rows')
  /
  commit
  /

  -- truncate original tables and reinsert

  -- Final Sales
  truncate table sls
  /

  insert /* + APPEND PARALLEL (sls, 32) */
    into sls(id_key,
                        id_level,
                        loc_key,
                        loc_level,
                        date1,
                        ticket,
                        ticket)
              (
                 select /* + PARALLEL (a, 32) */
                        id_key,
                        id_level,
                        loc_key,
                        loc_level,
                        date1,
                        ticket,
                        ticket
                   from sls_tmp a
              )
  /

  insert into debug_msg values(sysdate, 'Sales reinserted. Inserted ' || SQL%ROWCOUNT || ' rows')
  /

  commit
  /
  drop table sls_tmp
  /

Answer 1

问题在于脚本中的select语句。他们中的一些人在组织内部有空白行，这些行使得sqlplus认为它必须执行两个命令而不是一个。

这使得很长的命令完全失败，而下一个命令基本上没有任何操作或失败。

另一个问题是插入内部的SQL%ROWCOUNT，它看起来只有一些插件正在执行而其他插件落后。

最后，我将脚本分开，一次执行一步，一切正常。

如何在Oracle DB

1 个答案: