Count the no.of rows without using count function

Hi,
How to count the no.of rows without using the count function?
Thanks,

they won't be 100% accurate. You're correct, Bluefrog, but the same goes for doing a count(*) (depending on the size of the table, ofcourse):
the table being queried might be under DML (deletes/inserts), and the next count(*) might give different results.
Both approaches will never be 100% accurate.
But simply selecting num_rows will be much much faster than doing a count(*).
Counting the number of rows always reminds me of this ongoing discussion, by the way:
http://asktom.oracle.com/pls/apex/f?p=100:11:0::::P11_QUESTION_ID:127412348064#14136093079164 ;)
Usually knowing the number of records by approximatly is sufficient, imo. 1000000 or 1000007 records: I don't care, don't need to know that.
I've never needed to know the exact number of records in a table in my code, or been given a requirement that forced me to.

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Display the 3rd hieghest value without using rowid

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Can any one help me how to display the 3rd hieghest valuer without using a ROWID..
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Frank, using ROWNUM = 1 instead of DISTINCT could be a bit faster:
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SQL> EXPLAIN PLAN FOR
2 WITH got_r_num AS (
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10 /
Explained.
SQL> @?\RDBMS\ADMIN\UTLXPLS
PLAN_TABLE_OUTPUT
Plan hash value: 436395657
| Id | Operation                 | Name | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT          |      |     9 |   234 |     5 (40)| 00:00:01 |
|* 1 | VIEW                     |      |     9 |   234 |     5 (40)| 00:00:01 |
|   2 |   HASH UNIQUE             |      |     9 |    36 |     5 (40)| 00:00:01 |
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PLAN_TABLE_OUTPUT
Predicate Information (identified by operation id):
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2 WITH got_r_num AS (
3                     SELECT sal,
4                             DENSE_RANK() OVER(ORDER BY sal DESC NULLS LAST) AS r_num
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PLAN_TABLE_OUTPUT
Plan hash value: 21859616
| Id | Operation                 | Name | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT          |      |     1 |    26 |     4 (25)| 00:00:01 |
|* 1 | COUNT STOPKEY            |      |       |       |            |          |
|* 2 |   VIEW                    |      |    14 |   364 |     4 (25)| 00:00:01 |
|* 3 |    WINDOW SORT PUSHED RANK|      |    14 |    56 |     4 (25)| 00:00:01 |
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Select extra row without using UNION ALL in pl/sql

Hi,
Can anyone tell me how to select extra row without using UNION or UNION ALL in pl/sql. Actually I want to have my o/p of query as partitioned by designation and ordered by salary and than one extra row which will contain the highest salary in a particular salary. My table has first_name,emp_id,designation and salary column. And I wnt the o/p as.
Mohinish,12212,SI,46000
Ram,11212,SSI,47000
Shyam,12133,SI,48000
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Rocky,12312,SSI,56000
Sariq,23948,SI,43000
Suman,12789,HR,49000
Sampy,12780,SI,46000
Parna,11111,HR,50000
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Rick,9898,SI,46000
Sariq,23948,SI,43000
Shyam,12133,SI,48000
Shyam,12133,SI,48000
Ram,11212,SSI,47000
Rocky,12312,SSI,56000
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Suman,12789,HR,49000
Parna,11111,HR,50000
Parna,11111,HR,50000
Thanks in Advance

You don't have to do a UNION or UNION ALL in PL/SQL but you would need to in SQL to get the desired output:
with data_recs
as (select 'Mohinish' first_name,12212 emp_id,'SI' designation,46000 salary from dual union
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     select 'Shyam',12133,'SI',48000 from dual union
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     select 'Sampy',12780,'SI',46000 from dual union
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select first_name, emp_id, designation, salary from data_recs union all
select s.first_name, s.emp_id, s.designation, s.salary
from (select first_name,
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               designation,
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Suman        12789 HR             49000
Parna        11111 HR             50000
Parna        11111 HR             50000
Sariq        23948 SI             43000
Rick          9898 SI             46000
Mohinish     12212 SI             46000
Sampy        12780 SI             46000
Shyam        12133 SI             48000
Shyam        12133 SI             48000
Ram          11212 SSI            47000
Rocky        12312 SSI            56000
Rocky        12312 SSI            56000

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Hi
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Hi
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Thanks

well if you think about it i'm sure you'll find a solution
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table TAB(
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Alternate without using regexp_replace function

SELECT
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Another way
(eliminating instr function.. as your problem focusses on a fixed length)
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Hi, I have on my credit card monthly payments of fertilizer, and when
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<https://forums.adobe.com/message/7089860#7089860>

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An Update statement certainly can update sets of data instead single row updates:
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ENDLOOP.
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Hi,
You didn't write over 150 lines of code and then start testing it, did you?
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You may have noticed that this site normally doesn't display multiple spaces in a row.
Whenever you post formatted text (such as indented code) on this site, type these 6 characters:
\(small letters only, inside curly brackets) before and after each section of formatted text, to preserve spacing.
The 4 people who posted small code fragments for you to read all did this. It would be so much easier for people to read your humongeous query if it were formatted.

Count the no.of rows without using count function

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