merging two arrays

 Hi,

I have requirement like this

i am getting a table type parameter from java like below

1 1001,5  stores in as a single value

2 1002,6

3 1003,5

4 1004,6

and i need to pick some values from a table and is of like below

1 1001

2 2002

3 2003

table may have many rows than count of array and vice verse(array may have more count than table)

now i need compare two table types and need to merge with value||','||0  for the indexes which are coming from table and are not present in param nested table

expecting out put is

1 1001,5  stores in as a single value

2 1002,6

3 1003,5

4 1004,6

5      2002,0

6      2003,0

any body have some hints