Interested to Buy Any Domain ? << Click Here >> for more details...
what is count(*) from po_vendors(any table)? what does it do
and
what is count(1) from po_vendors(any table)?
what is count(0) from po_vendors(any table)
the out put is same
what is the difference
- 4 Answers
- 12103 Views
- IBM, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / sandeep sutar
Result if count(*), count(1), count(0) will be same.
Howevenr,
When we use count(*) then
first oracle query executer gets all the rows in buffure
cache, including all column and then counts all the rows.
this will impact with less performance.
select count(1) or count(0)
This reduces unwanted I/O by selecting just '1' against all
the rows.
Best practice to getting rowcount of table is
select count(rowid) from table_name;
| Is This Answer Correct ? | 10 Yes | 1 No |
Answer / koti
Not For above Qution..........
Q)How to fine How many coloumns in the APPs TABLES ?
Ans):-
select count(*) from dba_tab_columns
where table_name ='give apps table name';
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / bujji
select count(*) from temp1;
select count(1) from temp1;
select count(0) from temp1;
Above all 3 statements gives count (all are same) including
null vaues.
select count(Column_Name) from temp1;
Above statement gives the coulumn count witout null vaues.
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / eshwar
count(*) give the column count including null vaues
count(1),count(0) both will give the same result they will
count with out nulls
| Is This Answer Correct ? | 8 Yes | 8 No |
Are you familiar with internet architecture of oracle apps 11i?
why r u transer the data base tables to flat file and what is use
wht is format triger?
If there is any issue then whom do you report.(this is imp question for every interview)
How to report output like below supplier name date amount abc software jan/11 10000 /* jan month total transactions*/ abc software feb/12 30000 /* feb month total transactions*/ dell computers jan/13 45000 /* jan month total transactions*/
How to print invoice from APPS(front end).if we have invoice number in hand with us???
Cycle of requestion to receving transaction.
why r u transer the data base tables to flat file and what is use
what is organization id
List of all the modules under Manufacturing, Finance and Distribution in oracle applications?
what is multi org structure?
what is the difference between procedure and function
Oracle Apps Technical 
