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SQL Query assistance [message #673466] Tue, 20 November 2018 19:55 Go to next message
jkingqst
Messages: 23
Registered: August 2017
Junior Member
Hi All

Use Oracle for our DB backend and I'm trying to use SQL to generate a basic report. The we have a multi company db, meaning that each table we have is appended with a 3 digit company number; for example; a table name would be ttcemm030 however for company 100 it would be ttcemm030100 for company 200 it would be ttcemm030200 and etc.

The report I'm trying to generate needs to be in a CSV format with | as the separator and it needs to search each company table of cemm030xxx and bring back 2 columns from within that table, however within the CSV I would also need to put another column called "Company" that would be the last 3 digits of the table name.

I can manage to use a select query to bring back the table name and by using the regexp_substr put into a "Company" column the last 3 digits, but Im struggling with how to use that data for another select and then combine the output to my csv file.

Any help would be much appreciated.

Thanks Jason
Re: SQL Query assistance [message #673467 is a reply to message #673466] Tue, 20 November 2018 21:57 Go to previous messageGo to next message
BlackSwan
Messages: 26766
Registered: January 2009
Location: SoCal
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jkingqst wrote on Tue, 20 November 2018 17:55
Hi All

Use Oracle for our DB backend and I'm trying to use SQL to generate a basic report. The we have a multi company db, meaning that each table we have is appended with a 3 digit company number; for example; a table name would be ttcemm030 however for company 100 it would be ttcemm030100 for company 200 it would be ttcemm030200 and etc.

The report I'm trying to generate needs to be in a CSV format with | as the separator and it needs to search each company table of cemm030xxx and bring back 2 columns from within that table, however within the CSV I would also need to put another column called "Company" that would be the last 3 digits of the table name.

I can manage to use a select query to bring back the table name and by using the regexp_substr put into a "Company" column the last 3 digits, but Im struggling with how to use that data for another select and then combine the output to my csv file.

Any help would be much appreciated.

Thanks Jason

The current table naming scheme violate First Normal form in that no table name itself should include application data.
Each table should have 1 additional column for Company_ID, then the problem no longer exists.
Re: SQL Query assistance [message #673468 is a reply to message #673467] Tue, 20 November 2018 22:00 Go to previous messageGo to next message
jkingqst
Messages: 23
Registered: August 2017
Junior Member
Hi BlackSwan

Thank you for that and whilst I appreciate that isn't how it should be designed, I have to work with what I have.

Kind Regards
Jason
Re: SQL Query assistance [message #673469 is a reply to message #673468] Tue, 20 November 2018 22:35 Go to previous messageGo to next message
BlackSwan
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Can you CREATE VIEW?

Please read and follow the forum guidelines, to enable us to help you:
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How to use {code} tags and make your code easier to read

Re: SQL Query assistance [message #673470 is a reply to message #673469] Tue, 20 November 2018 23:07 Go to previous messageGo to next message
jkingqst
Messages: 23
Registered: August 2017
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BlackSwan wrote on Tue, 20 November 2018 22:35
Can you CREATE VIEW?

Please read and follow the forum guidelines, to enable us to help you:
OraFAQ Forum Guide
How to use {code} tags and make your code easier to read

No sorry, what i was thinking was spooling the output into a csv and then bringing it back in or some how storing the select into a variable.

Thanks Jason

[Updated on: Tue, 20 November 2018 23:15]

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Re: SQL Query assistance [message #673471 is a reply to message #673470] Wed, 21 November 2018 00:54 Go to previous messageGo to next message
Michel Cadot
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If I understand, you want one single csv file for each "table type".
Using your example, for "table type" "ttcemm030" with, say, tables "ttcemm030100", "ttcemm030200", "ttcemm030250"..., assuming they have the same columns "col1", "col2", you want a single "ttcemm030.csv" with columns "col1", "col2", "company" with "company" as "100", "200", "250" depending on the original table.
Is this correct?

Re: SQL Query assistance [message #673472 is a reply to message #673471] Wed, 21 November 2018 01:08 Go to previous messageGo to next message
jkingqst
Messages: 23
Registered: August 2017
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Hi Michel

Yes thank you that is what I'm looking for. Just not sure how to achieve it.

Thanks Jason
Re: SQL Query assistance [message #673473 is a reply to message #673472] Wed, 21 November 2018 01:22 Go to previous messageGo to next message
Michel Cadot
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Here's a way with the following script:
def table_type=&1
set echo off feedback off heading off termout off
spool .\dump_tmp.sql
select 'select '||table_name||'.*, '''||substr(table_name,length('&table_type')+1)||''' from '||table_name||';'
from user_tables
where table_name like upper('&table_type')||'%'
order by 1
/
set colsep '|' 
spool .\&table_type..csv
@.\dump_tmp
spool off
Here's an example.
Settings:
create table ttcemm030100 (col1 int, col2 varchar2(20));
create table ttcemm030200 (col1 int, col2 varchar2(20));
create table ttcemm030250 (col1 int, col2 varchar2(20));
insert into ttcemm030100 values (1, 'This is from 100');
insert into ttcemm030100 values (2, 'This is from 100');
insert into ttcemm030100 values (3, 'This is from 100');
insert into ttcemm030200 values (1, 'This is from 200');
insert into ttcemm030200 values (2, 'This is from 200');
insert into ttcemm030250 values (1, 'This is from 250');
insert into ttcemm030250 values (2, 'This is from 250');
insert into ttcemm030250 values (3, 'This is from 250');
insert into ttcemm030250 values (4, 'This is from 250');
commit;
select * from ttcemm030100 ;
select * from ttcemm030200 ;
select * from ttcemm030250 ;
SQL> select * from ttcemm030100 ;

      COL1 COL2
---------- --------------------
         1 This is from 100
         2 This is from 100
         3 This is from 100

3 rows selected.

SQL> select * from ttcemm030200 ;

      COL1 COL2
---------- --------------------
         1 This is from 200
         2 This is from 200

2 rows selected.

SQL> select * from ttcemm030250 ;

      COL1 COL2
---------- --------------------
         1 This is from 250
         2 This is from 250
         3 This is from 250
         4 This is from 250

4 rows selected.
Execution:
SQL> @.\dump_table ttcemm030
SQL> -- Result
SQL> host type .\ttcemm030.csv

         1|This is from 100    |100
         2|This is from 100    |100
         3|This is from 100    |100

         1|This is from 200    |200
         2|This is from 200    |200

         1|This is from 250    |250
         2|This is from 250    |250
         3|This is from 250    |250
         4|This is from 250    |250

SQL>
The script generates a temporary intermediate script:
SQL> host type .\dump_tmp.sql

select TTCEMM030100.*, '100' from TTCEMM030100;
select TTCEMM030200.*, '200' from TTCEMM030200;
select TTCEMM030250.*, '250' from TTCEMM030250;
Re: SQL Query assistance [message #673474 is a reply to message #673466] Wed, 21 November 2018 01:36 Go to previous messageGo to next message
John Watson
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Registered: January 2010
Location: Global Village
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How about normalizing your tables into a view, and then run your query against that? FOr example,
create view ttcemm030 as
select 100 src,ttcemm030100.* from ttcemm030100
union all
select 200 src,ttcemm030200.* from ttcemm030200
union all
select 300 src,ttcemm030300.* from ttcemm030300
--and so on...
/
Re: SQL Query assistance [message #673475 is a reply to message #673474] Wed, 21 November 2018 01:58 Go to previous messageGo to next message
jkingqst
Messages: 23
Registered: August 2017
Junior Member
Thanks Michel i will try your recommendation when I'm back in the office.
also thanks John but i don't have sufficient db privileges to create a view
Re: SQL Query assistance [message #673476 is a reply to message #673473] Wed, 21 November 2018 05:29 Go to previous messageGo to next message
Solomon Yakobson
Messages: 3269
Registered: January 2010
Location: Connecticut, USA
Senior Member
We can use DBMS_XMLGEN instead of generating intermediary dump_tmp.sql. Also, OP is on 12.2 where SQL*Plus supports CSV markup. Script dump_table.sql:

accept table_type prompt "Please enter table type: "
set termout off
set head off
set echo off
set verify off
set feed off
set markup csv on delimiter | quote off
spool &table_type..csv
with t as (
           select  dbms_xmlgen.getxml('select t.*,''' || substr(table_name,length('&&table_type') + 1 ) || ''' col3 from ' || table_name || ' t') xmldoc
             from  user_tables
             where table_name like upper('&&table_type') || '%'
          )
select  x.*
  from  t,
        xmltable(
                 '/ROWSET/ROW'
                 passing xmltype(xmldoc)
                 columns
                   col1 varchar2(4000) path 'COL1',
                   col2 varchar2(4000) path 'COL2',
                   col3 varchar2(4000) path 'COL3'
                ) x
/
spool off
set head on
set verify on
set feed on
set markup csv off
set termout on


Execution:

SQL> @dump_table.sql
Please enter table type: ttcemm030
SQL>

Output file ttcemm030.csv:

1|This is from 100|100
2|This is from 100|100
3|This is from 100|100
1|This is from 200|200
2|This is from 200|200
1|This is from 250|250
2|This is from 250|250
3|This is from 250|250
4|This is from 250|250

SY.
Re: SQL Query assistance [message #673477 is a reply to message #673476] Wed, 21 November 2018 05:42 Go to previous messageGo to next message
jkingqst
Messages: 23
Registered: August 2017
Junior Member
Hi Michel

Thank you for your assistance and effort into the solution, that is working great. The only change I made was I only required 2 columns from the table so I just modified the dump_table file which is all working. The only issue I have is that the CSV file is outputting the following at the top of the file

SP2-0044: For a list of known commands enter HELP
and to leave enter EXIT.
SP2-0044: For a list of known commands enter HELP
and to leave enter EXIT.

How can I resolve that?
I did try set sqlblanklines on but no luck.

Thanks Jason
Re: SQL Query assistance [message #673478 is a reply to message #673477] Wed, 21 November 2018 05:44 Go to previous messageGo to next message
gazzag
Messages: 1118
Registered: November 2010
Location: Bedwas, UK
Senior Member
Post your script so we can see it please.

[Edit: typo]

[Updated on: Wed, 21 November 2018 05:45]

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Re: SQL Query assistance [message #673479 is a reply to message #673478] Wed, 21 November 2018 05:47 Go to previous messageGo to next message
jkingqst
Messages: 23
Registered: August 2017
Junior Member
Sorry was using the one that Michel above created

def table_type=&1
set echo off feedback off heading off termout off
spool .\dump_tmp.sql
select 'select '||table_name||'.*, '''||substr(table_name,length('&table_type')+1)||''' from '||table_name||';'
from user_tables
where table_name like upper('&table_type')||'%'
order by 1
/
set colsep '|' 
spool .\&table_type..csv
@.\dump_tmp
spool off
Re: SQL Query assistance [message #673480 is a reply to message #673479] Wed, 21 November 2018 05:52 Go to previous messageGo to next message
Michel Cadot
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Account Moderator

What is interesting is the one that returns the errors you posted not the one I posted.

Also have a look at Solomon's solution which bypasses all the SQL*Plus stuff and takes advantage of the new SQL*Plus facilities (but it requires a fix number of columns).

Re: SQL Query assistance [message #673481 is a reply to message #673480] Wed, 21 November 2018 05:57 Go to previous messageGo to next message
gazzag
Messages: 1118
Registered: November 2010
Location: Bedwas, UK
Senior Member
And this is the content of your dump_tmp.sql:
SQL> select 'select '||table_name||'.*, '''||substr(table_name,length('&table_type')+1)||''' from '||table_name||';'
  2  from user_tables
  3  where table_name like upper('&table_type')||'%'
  4  order by 1
  5  /
old   1: select 'select '||table_name||'.*, '''||substr(table_name,length('&table_type')+1)||''' from '||table_name||';'
new   1: select 'select '||table_name||'.*, '''||substr(table_name,length('set')+1)||''' from '||table_name||';'
old   3: where table_name like upper('&table_type')||'%'
new   3: where table_name like upper('set')||'%'

no rows selected

SQL> set colsep '|'
SQL> spool .\&table_type..csv
Re: SQL Query assistance [message #673482 is a reply to message #673480] Wed, 21 November 2018 05:58 Go to previous messageGo to next message
jkingqst
Messages: 23
Registered: August 2017
Junior Member
Thanks Michel, I'm using sqlcl to run that the script if that makes any difference. I'm looking at Solomon's solution as well but just working out the script and where to change the select query to bring back the two columns I'm after.
Again I'm very grateful for the time guys.
Re: SQL Query assistance [message #673483 is a reply to message #673481] Wed, 21 November 2018 06:02 Go to previous messageGo to next message
jkingqst
Messages: 23
Registered: August 2017
Junior Member
gazzag wrote on Wed, 21 November 2018 05:57
And this is the content of your dump_tmp.sql:
SQL> select 'select '||table_name||'.*, '''||substr(table_name,length('&table_type')+1)||''' from '||table_name||';'
  2  from user_tables
  3  where table_name like upper('&table_type')||'%'
  4  order by 1
  5  /
old   1: select 'select '||table_name||'.*, '''||substr(table_name,length('&table_type')+1)||''' from '||table_name||';'
new   1: select 'select '||table_name||'.*, '''||substr(table_name,length('set')+1)||''' from '||table_name||';'
old   3: where table_name like upper('&table_type')||'%'
new   3: where table_name like upper('set')||'%'

no rows selected

SQL> set colsep '|'
SQL> spool .\&table_type..csv

This is my dump_tmp.sql file

old:select 'select '||table_name||'.*, '''||substr(table_name,length('&table_type')+1)||''' from '||table_name||';'
from user_tables
where table_name like upper('&table_type')||'%'
order by 1

new:select 'select '||table_name||'.*, '''||substr(table_name,length('ttcemm030')+1)||''' from '||table_name||';'
from user_tables
where table_name like upper('ttcemm030')||'%'
order by 1
select TTCEMM030050.*, '050' from TTCEMM030050;                                 
select TTCEMM030070.*, '070' from TTCEMM030070;                                 
select TTCEMM030090.*, '090' from TTCEMM030090;                                 
select TTCEMM030100.*, '100' from TTCEMM030100;                                 
select TTCEMM030104.*, '104' from TTCEMM030104;                                 
select TTCEMM030110.*, '110' from TTCEMM030110;                                 
select TTCEMM030111.*, '111' from TTCEMM030111;                                 
select TTCEMM030114.*, '114' from TTCEMM030114;                                 
select TTCEMM030120.*, '120' from TTCEMM030120;                                 
select TTCEMM030121.*, '121' from TTCEMM030121;                                 
select TTCEMM030200.*, '200' from TTCEMM030200;                                 
select TTCEMM030250.*, '250' from TTCEMM030250;                                 
select TTCEMM030300.*, '300' from TTCEMM030300;                                 
select TTCEMM030301.*, '301' from TTCEMM030301;                                 
select TTCEMM030400.*, '400' from TTCEMM030400;                                 
select TTCEMM030500.*, '500' from TTCEMM030500;                                 
select TTCEMM030559.*, '559' from TTCEMM030559;                                 
select TTCEMM030600.*, '600' from TTCEMM030600;                                 
select TTCEMM030618.*, '618' from TTCEMM030618;                                 
select TTCEMM030619.*, '619' from TTCEMM030619;                                 
select TTCEMM030650.*, '650' from TTCEMM030650;                                 
select TTCEMM030900.*, '900' from TTCEMM030900;                                 
select TTCEMM030910.*, '910' from TTCEMM030910;
Re: SQL Query assistance [message #673484 is a reply to message #673483] Wed, 21 November 2018 06:07 Go to previous messageGo to next message
Michel Cadot
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Add "verify off" in the "set" instruction:
set echo off feedback off heading off termout off verify off

[Updated on: Wed, 21 November 2018 06:07]

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Re: SQL Query assistance [message #673487 is a reply to message #673484] Wed, 21 November 2018 06:16 Go to previous messageGo to next message
jkingqst
Messages: 23
Registered: August 2017
Junior Member
Michel Cadot wrote on Wed, 21 November 2018 06:07

Add "verify off" in the "set" instruction:
set echo off feedback off heading off termout off verify off
Thank you Michel that worked, error is now gone and working perfectly. I'm also curious to learn Solomon's solution to get a better understanding of sql.
In his example before lower select

with t as (
           select  dbms_xmlgen.getxml('select t.*,''' || substr(table_name,length('&&table_type') + 1 ) || ''' col3 from ' || table_name || ' t') xmldoc
             from  user_tables
             where table_name like upper('&&table_type') || '%'
          )

It looks like this is calling the main table but how is referencing the col1, col2 and col3 in the lower select?

The actual column name from the table is dsca and enterprise_unit.

Thanks Jason
Re: SQL Query assistance [message #673492 is a reply to message #673487] Wed, 21 November 2018 07:13 Go to previous messageGo to next message
Solomon Yakobson
Messages: 3269
Registered: January 2010
Location: Connecticut, USA
Senior Member
jkingqst wrote on Wed, 21 November 2018 07:16

It looks like this is calling the main table but how is referencing the col1, col2 and col3 in the lower select?

The actual column name from the table is dsca and enterprise_unit.

And how are we supposed to know that? Anyway, all you need to do is change:

                   col1 varchar2(4000) path 'COL1',
                   col2 varchar2(4000) path 'COL2',

to:

                   col1 varchar2(4000) path 'DSCA',
                   col2 varchar2(4000) path 'ENTERPRISE_UNIT',

SY.
Re: SQL Query assistance [message #673493 is a reply to message #673492] Wed, 21 November 2018 07:24 Go to previous messageGo to next message
jkingqst
Messages: 23
Registered: August 2017
Junior Member
Hi Solomon, sorry i never mentioned it, i was just trying to keep it simple and i was going to add the column names in later.
I will try tomorrow and let you know.
Thanks again
Cheers, Jason
Re: SQL Query assistance [message #673495 is a reply to message #673493] Wed, 21 November 2018 07:33 Go to previous messageGo to next message
Michel Cadot
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And you can replace the "'||table_name||'.*" or "t.*" by "dsca, enterprise_unit" in both solutions.

Re: SQL Query assistance [message #673496 is a reply to message #673495] Wed, 21 November 2018 07:45 Go to previous messageGo to next message
jkingqst
Messages: 23
Registered: August 2017
Junior Member
Michel Cadot wrote on Wed, 21 November 2018 07:33

And you can replace the "'||table_name||'.*" or "t.*" by "dsca, enterprise_unit" in both solutions.

Sorry Michel but not sure where you mean?
Re: SQL Query assistance [message #673497 is a reply to message #673480] Wed, 21 November 2018 07:51 Go to previous messageGo to next message
Solomon Yakobson
Messages: 3269
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Location: Connecticut, USA
Senior Member
Michel Cadot wrote on Wed, 21 November 2018 06:52

Also have a look at Solomon's solution which bypasses all the SQL*Plus stuff and takes advantage of the new SQL*Plus facilities (but it requires a fix number of columns).
Any column number solution,as long as all tables have same number of columns of same data type (your solution doesn't have that restriction):

accept table_type prompt "Please enter table type: "
set termout off
set head off
set echo off
set verify off
set feed off
variable v_cur refcursor
declare
    v_stmt clob;
begin
    with t as (
               select  row_number() over(order by table_name) rn,
                       case
                         when row_number() over(order by table_name) > 1 then ' union all '
                       end ||'select t.*,''' || substr(table_name,length('&&table_type') + 1 ) || ''' col3 from ' || table_name || ' t' col
                 from  user_tables
                 where table_name like upper('&&table_type') || '%'
              )
    select  listagg(col) within group(order by rn)
      into  v_stmt
      from  t;
    open :v_cur for v_stmt;
end;
/
set markup csv on delimiter | quote off
spool &table_type..csv
print v_cur
spool off
set head on
set verify on
set feed on
set markup csv off
set termout on

CSV:

1|This is from 100|100
2|This is from 100|100
3|This is from 100|100
1|This is from 200|200
2|This is from 200|200
1|This is from 250|250
2|This is from 250|250
3|This is from 250|250
4|This is from 250|250

SY.
Re: SQL Query assistance [message #673500 is a reply to message #673496] Wed, 21 November 2018 09:52 Go to previous messageGo to next message
Michel Cadot
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jkingqst wrote on Wed, 21 November 2018 14:45
Michel Cadot wrote on Wed, 21 November 2018 07:33

And you can replace the "'||table_name||'.*" or "t.*" by "dsca, enterprise_unit" in both solutions.

Sorry Michel but not sure where you mean?

select 'select '||table_name||'.*, '''||substr(table_name,length('&table_type')+1)||''' from '||table_name||';'
select dbms_xmlgen.getxml('select t.*,''' || substr(table_name,length('&&table_type') + 1 ) || ''' col3 from '

Re: SQL Query assistance [message #673513 is a reply to message #673500] Wed, 21 November 2018 23:04 Go to previous messageGo to next message
jkingqst
Messages: 23
Registered: August 2017
Junior Member
Hi SY

I'm working through your solution, trying to get my head around it and work through it for my own learning.

In your original suggestion without any changes,
accept table_type prompt "Please enter table type: "
set termout off
set head off
set echo off
set verify off
set feed off
set markup csv on delimiter | quote off
spool &table_type..csv
with t as (
           select  dbms_xmlgen.getxml('select t.*,''' || substr(table_name,length('&&table_type') + 1 ) || ''' col3 from ' || table_name || ' t') xmldoc
             from  user_tables
             where table_name like upper('&&table_type') || '%'
          )
select  x.*
  from  t,
        xmltable(
                 '/ROWSET/ROW'
                 passing xmltype(xmldoc)
                 columns
                   col1 varchar2(4000) path 'COL1',
                   col2 varchar2(4000) path 'COL2',
                   col3 varchar2(4000) path 'COL3'
                ) x
/
spool off
set head on
set verify on
set feed on
set markup csv off
set termout on

I keep getting the following error
ERROR at line 10:
ORA-06502: PL/SQL: numeric or value error 
ORA-06512: at "SYS.XMLTYPE", line 272 
ORA-06512: at line 1 

Thoughts?

Thanks Jason
Re: SQL Query assistance [message #673516 is a reply to message #673513] Thu, 22 November 2018 00:51 Go to previous messageGo to next message
Michel Cadot
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Account Moderator

What is the type of the selected columns?
desc ttcemm030100
Re: SQL Query assistance [message #673518 is a reply to message #673516] Thu, 22 November 2018 02:04 Go to previous messageGo to next message
jkingqst
Messages: 23
Registered: August 2017
Junior Member
T$EUNT    NOT NULL CHAR(6)  
T$DSCA    NOT NULL CHAR(30)
Re: SQL Query assistance [message #673519 is a reply to message #673518] Thu, 22 November 2018 02:17 Go to previous messageGo to next message
Michel Cadot
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Please post the ACTUAL code you executed.

Re: SQL Query assistance [message #673520 is a reply to message #673516] Thu, 22 November 2018 03:44 Go to previous message
jkingqst
Messages: 23
Registered: August 2017
Junior Member
SQL> desc ttcemm030100;
Name      Null?    Type
--------- -------- --------
T$EUNT    NOT NULL CHAR(6)
T$DSCA    NOT NULL CHAR(30)
T$LCMP    NOT NULL NUMBER
T$FCMP    NOT NULL NUMBER
T$EUCA    NOT NULL CHAR(6)
T$CCAL    NOT NULL CHAR(9)
T$DFPO    NOT NULL CHAR(6)
T$DFCO    NOT NULL CHAR(6)
T$RACT    NOT NULL CHAR(6)
T$TXTN    NOT NULL NUMBER
T$REFCNTD NOT NULL NUMBER
T$REFCNTU NOT NULL NUMBER
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