UNIX for Advanced & Expert Users

I have a file that reads File (X.txt)

Contents of record 1:
rdrDESTINATION_ADDRESS (String) "91 971502573813"
rdrDESTINATION_IMSI (String) "000000000000000"
rdrORIGINATING_ADDRESS (String) "d0 movies"
rdrORIGINATING_IMSI (String) "000000000000000"
rdrTRAFFIC_EVENT_TIME (String) "09090801212416"
rdrTRAFFIC_EVENT_TYPE (Long) 8


File (Y.txt)

Contents of record 2:
rdrDESTINATION_ADDRESS (String) "91 9715023423813"
rdrDESTINATION_IMSI (String) "00000002340000"
rdrORIGINATING_ADDRESS (String) "d0 etisalat"
rdrORIGINATING_IMSI (String) "000000000000000"



I want to create a dynamic table / insert of values into this table..

Code:

tmpdir=/tmp/records ; mkdir -p $tmpdir ;
tmpfile=/tmp/records/dump.$$
TABLE_COLUMNS=$tmpdir/columns.$$
TABLE_NAME=DUMP_$$
sqlload=$tmpdir/records/sqldump.sql


cat X.txt Y.txt| grep -i rdr | sort -ru  > $TABLE_COLUMNS 


echo "CREATE TABLE $TABLE_NAME  " > $tmpdir/create_dump_tbl.sql
while read line ; do
echo "$line VARCHAR2(50 BYTE)," >> $tmpdir/create_dump_tbl.sql
TABLE_COL=`echo $TABLE_COL "," $line`
done < $TABLE_COLUMNS


## above has a flaw ..for last line of " , " but anyway, not a big deal

## My Real issue is create an insert dynamically"
for field in `cat X.txt Y.txt`
do
echo "Insert into $TABLE_NAME ($TABLE_COL) VALUES $ " >> $sqlload
done

Note that File X.txt has 6 columns
and File Y.txt has 4 columns,
so how do i construct the statement, putting nulls in the 2 columns that are empty. (i.e. rdrTRAFFIC_EVENT_TIME rdrTRAFFIC_EVENT_TYPE )


Note: the columns from the File (x.txt & y.txt) do not appear in order

Thanks