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help on shell script

Posted on 2013-06-12
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Last Modified: 2014-01-13
I am currently struck with one shell script which i am not aware of how to create it..

I have file with the following contents,

export SYS.Test1;
export SYS.Test2;
export SYS.Test3;
export SYS.Test4;
export SYS.TesT5 where emp=0;
export SYS.Test6 where emp=1;
export SYS.Test7 where emp=3;

I need the output as :

Tables=SYS.Test1,SYS.Test2,SYS.Test3,SYS.Test4,SYS.Test5,SYS.Test6,SYS.Test7
Query=SYS.TesT5:"where emp=0"
Query=SYS.Test6:"where emp=1"
Query=SYS.Test7:"where emp=3"


This is just a sample and i have more than a "60000" tables with these type of conditions and it is very difficult to create a par file with all these complex conditions.. Some tables are full export and some are partial tables.. We have a program which generates these tables with these conditions. I need to create a par file for this and export this using expdp.



Tables="should include all the tables next to export command"
Query="should include the tables which has where condition"

Thanks
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Question by:Raju1983
4 Comments
 
LVL 20

Accepted Solution

by:
flow01 earned 250 total points
ID: 39241765
"We have a program which generates these tables with these conditions"
does it generate first file type or second ?
If first, you can also alter the program  instead of the file.
if second what is the problem ?

For conversion of format 1 to 2 I would use oracle because i am more familiar with it:

create external table  >>  example   (ext is a oracle-directory defined , the input file has to be in the fysical directory where ext refers to)

CREATE TABLE change_export_par (
  text                 varchar2(4000)
)
      organization external
      ( default directory ext
        access parameters
        ( records delimited by newline
fields terminated by ';' optionally enclosed by '"' RTRIM
MISSING FIELD VALUES ARE NULL
(
 text          
)
        )
        location ('export.par')  
      )
/

-- check data
select * from change_export_par
/

-- convert lines
with pardata
as
(
select rownum  linenr,
case instr(text,' ',1,2)
when 0 then  trim(substr(text,instr(text,' ',1,1) + 1))
else         trim(substr(text,(instr(text,' ',1,1) + 1), instr(text,' ',1,2) - instr(text,' ',1,1)))
end table_name
,
case instr(text,' ',1,2)
when 0 then  null
else         trim(substr(text,(instr(text,' ',1,2) + 1)))
end table_where
from    change_export_par
)
select newparline
from
(
select linenr,
'Query=' || table_name || ':"' || table_where || '"' newparline
from pardata where table_where is not null
union
select  0 linenr ,
   'TABLE=' ||
   rtrim (xmlagg (xmlelement (e,table_name || ',')).extract ('//text()'), ',') newparline
from
   pardata
   order by linenr
)
order by linenr
/

You can create a sqlscript taking the filename as argument  and  use the argument in the locationr
0
 
LVL 19

Assisted Solution

by:simon3270
simon3270 earned 250 total points
ID: 39242165
Or, in shell script
: parameter of this script is the original file - modified file written to stdout
awk -F'[ ;]*' '/^export/{tabs=tabs "," $2}END{printf "Tables=%s\n", substr(tabs,2)} $1
awk -F'[ ;]*' '/^export.*where/{printf "Query=%s:\"%s %s\"\n", $2, $3, $4}' $1

Open in new window

This assumes that the "where" clause is exactly one item with no spaces - let me know if it is more comple.

Use the script as
   sh script_name input_file_name > output_file_name
0

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