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oracle - ORA-00904 动态 SQL 块中的标识符无效错误

问题描述

我正在运行下面的代码，一旦执行，就会报告一个错误，告诉我 EST_ONE_ROW_MB 是一个无效的标识符。

我被告知我可能需要让动态 SQL 部分作为独立查询运行，以作为初始故障排除练习开始，但我对于如何在这里编写一个子查询来产生所需的输出并消除错误。

create or replace procedure JUST_ME is

--variables

l_dblink varchar2(100) := 'DB1';
file_handle UTL_FILE.file_type;
v_ts_name varchar2(30);
v_link_name varchar2(10);
v_csv_name varchar2(100);
EST_ONE_ROW_MB varchar2(100) ;
TOTAL_ROW_COUNT NUMBER;
SPACE_REQUIRED NUMBER;
TOT_OBJECT_SIZE_MB NUMBER;
v_Mv_name varchar2(100);
v_sql1 varchar2(1500);
cur SYS_REFCURSOR;
owner varchar2(100);
table_name varchar2(100);
driver_table varchar2(100);
mandatory_join varchar2(100);
C_TOTAL_ROW_COUNT varchar2(100);
v_total_driver_only varchar2(100);
--

begin


SELECT tablename into v_csv_name
FROM BOB01.BOB_new_table_tracker
WHERE
CREATED_AT = (select MAX(CREATED_AT) from BOB01.BOB_new_table_tracker);

SELECT mv_name into v_Mv_name
FROM BOB01.BOB_new_table_tracker_mv
WHERE
CREATED_AT = (select MAX(CREATED_AT) from BOB01.BOB_new_table_tracker_mv);

select link_name into v_link_name from link_and_mail where mdate = (select max(mdate) from link_and_mail);
select distinct targetschema into v_ts_name from BOB01.MV_BOB_TABLE;

v_sql1 := 'SELECT /*+ monitor parallel (4)*/ a.owner,
                        a.table_name,
                        b.driver_table,
                        b.mandatory_join,
                        sum(c.sum_bytes) TOT_OBJECT_SIZE_MB,
                        (TOT_OBJECT_SIZE_MB) / (:C_TOTAL_ROW_COUNT) AS "EST_ONE_ROW_MB",
                        (EST_ONE_ROW_MB) * (:TOTAL_ROW_COUNT) AS "SPACE_REQUIRED"
                 FROM dba_tables@DB1 a, '|| v_Mv_name ||' b, MV_PRD_SEG_DATA c
                 WHERE a.table_name IN ( SELECT table_name
                                       FROM MV_BOB_TABLE
                                       WHERE driver_table IS NOT NULL
                                             AND   additional_joins IS NULL
                                     )
                 AND   a.owner IN ( SELECT DISTINCT productionschema FROM MV_BOB_TABLE c  )
                 and a.table_name = b.table_name
                 and a.table_name = c.segment_name
                 group by a.owner,a.table_name,b.driver_table,b.mandatory_join
               ORDER BY table_name';

file_handle := utl_file.fopen('ESTIMATES_CSV', v_csv_name||'_EST_PROC.csv', 'w', 32767);

--
UTL_FILE.PUT_LINE(file_handle, ' ');
UTL_FILE.PUT_LINE(file_handle, 'The below report shows total row counts in PROD');
UTL_FILE.PUT_LINE(file_handle, ' for unjoined tables in the BOB document:');
UTL_FILE.PUT_LINE(file_handle, ' ');
utl_file.put_line(file_handle, 'OWNER,TABLE_NAME,MANDATORY_JOIN,TOT_OBJECT_SIZE_MB,EST_ONE_ROW_MB,TOTAL_ROW_COUNT,SPACE_REQUIRED');
--main loop
open cur for v_sql1 using TOTAL_ROW_COUNT,C_TOTAL_ROW_COUNT;
   loop
      fetch cur into OWNER,TABLE_NAME,MANDATORY_JOIN,TOT_OBJECT_SIZE_MB,EST_ONE_ROW_MB,TOTAL_ROW_COUNT,SPACE_REQUIRED;--,EST_ONE_ROW_MB;
      exit when cur%NOTFOUND;
      execute immediate' select /*+parallel (4)*/ count(*) from '||owner||'.'||table_name || '@' || l_dblink into TOTAL_ROW_COUNT;

execute immediate' select /*+monitor parallel (10)*/ count(*) from ' ||owner||'.'||table_name || '@' || l_dblink||' b '||','||
driver_table || '@' || l_dblink||' a ' ||' where ' ||mandatory_join into TOTAL_ROW_COUNT;

execute immediate' select /*+monitor parallel (10)*/ count(*) from ' ||owner||'.'||table_name || '@' || l_dblink into C_TOTAL_ROW_COUNT;

utl_file.put_line(file_handle,
                      OWNER || ',' ||
                      TABLE_NAME || ',' ||
                      TOT_OBJECT_SIZE_MB || ',' ||
                      TOTAL_ROW_COUNT || ',' ||
                      C_TOTAL_ROW_COUNT || ',' || 
                      round(TOT_OBJECT_SIZE_MB / C_TOTAL_ROW_COUNT,7)|| ',' ||
                      round(round(TOT_OBJECT_SIZE_MB / C_TOTAL_ROW_COUNT,7) * round(TOTAL_ROW_COUNT,0),0)
                      );


v_total_driver_only := v_total_driver_only + round(TOT_OBJECT_SIZE_MB / C_TOTAL_ROW_COUNT,7) * round(TOTAL_ROW_COUNT,0);

end loop;

UTL_FILE.PUT_LINE(file_handle, ' ');
utl_file.put_line(file_handle,
                     'Total Estimated Space Required '|| round(v_total_driver_only,0) ||' MB'
                     );

utl_file.fclose(file_handle);

end JUST_ME;

标签： oracleplsql

解决方案

以EST_ONE_ROW_MB这种方式使用是不可能的，因为它没有被定义为列。将其替换为(TOT_OBJECT_SIZE_MB) / (:C_TOTAL_ROW_COUNT)

SELECT /*+ monitor parallel (4)*/ a.owner,
                        a.table_name,
                        b.driver_table,
                        b.mandatory_join,
                        sum(c.sum_bytes) TOT_OBJECT_SIZE_MB, -- will be the same problem
                        (sum(c.sum_bytes)) / (:C_TOTAL_ROW_COUNT) AS "EST_ONE_ROW_MB",
                        ((sum(c.sum_bytes)) / (:C_TOTAL_ROW_COUNT)) * (:TOTAL_ROW_COUNT) AS "SPACE_REQUIRED"
...

如果你有一个内联视图，你可以这样做。例如

select EST_ONE_ROW_MB  * (:TOTAL_ROW_COUNT) AS "SPACE_REQUIRED"
from(
  select (TOT_OBJECT_SIZE_MB) / (:C_TOTAL_ROW_COUNT) AS "EST_ONE_ROW_MB"
   from ....
)

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