iReport的“报表查询”对话框中有多个查询

Question

I want to make following kind of report using ireport:

Total Items: TOTAL_NO_OF_ITEMS
Damaged Items: NO_OF_DAMAGED_ITEMS              
Non Damaged Items: NO_OF_NON_DAMAGED_ITEMS

Table structure is:

Items{
item id int PK,
item_status varchar  <!--having values as 'damaged' or 'non-damaged')-->
}

In iReport's Report Query Dialog box I can give query:

select count(*) item_counts , item_status status  from Items group by item_status;

that will generate

Damaged Items: NO_OF_DAMAGED_ITEMS              
Non Damaged Items: NO_OF_NON_DAMAGED_ITEMS

BUT for the line in report:

Total Items: TOTAL_NO_OF_ITEMS

i have to run one more query :

select count(*) total_items from items

So i want to ask how to can i give more than one queries for a single jrxml file using ireport in Report Dialog Box?

Thanks...

Answer 1

There's no need for multiple queries for this type of problem. You could do all of the processing in the database if you want:

select count(*) as item_counts, item_status as status from Items group by item_status
union all
select count(*) as item_counts, 'all items' as status from Items

Or you could do no processing in the database:

select * from Items
order by item_status

Then in the report create 3 variables to calculate your 3 desired values.

And of course you could use a hybrid. Keep your current query unmodified, and add a variable that sums up the damaged and undamaged items to get the total.