Question

I have read few articles about table partioning but still I am bit confused on its uses.
My case is as follows.

I have a big Table TA containing 10 millions record approx and is daily loaded with 30-40K records.

Table TA contains many column including date field and one more critical column is project# which is varchar.

Now I have an option of partioning table TA on date field.

But if I see my query mainly I am going to fetch data for one date alone and since date field is indexed so data fetching is not a big prob.

Similary qry contains project# also in “WHERE” condion with “IN” clause i.e I have to give N number of project# as input through “IN” clause.

Now suggest me how should I proceed.

Answer 1

If you will always read the full daily data, do this:

Step 0) Drop the global index on date, you won’t need it with partitions.

Step 1) Create daily partitions

Step 2) Create a secondary partition local index on project

If I misundertood you, and you won’t read the full daily partition, just parts of it, then leave your schema as it is.