Count of records/rows in a Table

Hi
This could be a basic question , but i don't have an idea how to do that .
Could you please tell me , how get an count of records/rows in a specific table ?
Thank you
Luke

sb92075 wrote:
It takes time to get count of records if the table size is hugCan YOU count to 1000000000000000000 as quickly as you count to 10?????????????????????????
If it takes you longer to count many things, why do you expect Oracle to do better than you?Really??
Let's try some counts and see.
First off, let's count a few 1000 rows.
SQL> set timing on
SQL> select count(*) from all_objects;
COUNT(*)
45045
Elapsed: 00:00:17.08So 17 seconds for 45,000 rows.
Now if you're logic is correct, counting let's say a few billion rows, should take an hour? Perhaps more?
Here's what I see on one of my larger tables:
SQL> select count(*) from daily_xxxxxxx;
COUNT(*)
2569780329
Elapsed: 00:00:10.03Oops... it is faster.
Get a clue!I hereby sincerely apologise that my database does not adhere to your fine logic that says it should take a few hours - I will speak disapprovingly to the CBO for allowing the 2nd select count (on the same database) to be faster than the 1st select count. I will even use the backchannel to inform Larry that this is not acceptable.
Of course, this is assuming that you do not have your head stuck up somewhere and are indeed correct that it takes a "+looooonnngggg+" time to count lots of rows.
!http://smileyicons.net/smilies/actions1.gif!

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I want a count of distinct rows in a table

I want a count of distinct rows in a table through a single query -- is it possible?
eg.
table-
create table ch1 (a int, b int, c int, d int)
insert ch1 values (1,1,1,1)
insert ch1 values (2,2,2,2)
insert ch1 values (1,1,1,1)
insert ch1 values (2,2,2,2)
insert ch1 values (1,3,4,5)

hi,
create table ch1 (a int, b int, c int, d int) ;
insert into ch1 values (1,1,1,1);
insert into ch1 values (2,2,2,2);
insert into ch1 values (1,1,1,1);
insert into ch1 values (2,2,2,2);
insert into ch1 values (1,3,4,5);
SQL> select * from ch1;
         A          B          C          D
         1          1          1          1
         2          2          2          2
         1          1          1          1
         2          2          2          2
         1          3          4          5
SQL> select distinct * from ch1;
         A          B          C          D
         1          1          1          1
         1          3          4          5
         2          2          2          2
SQL>
1* select count(*) from( select distinct * from ch1)
SQL> /
COUNT(*)
         3
SQL> ed
Wrote file afiedt.buf
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2* group by a,b,c,d)
SQL> /
COUNT(*)
         3
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Count the Records in an internal table without a loop.

How do i count the number of records in an internal table without using the loop statement.
The Describe statement give the total no. of records in the internal table.But i want the count of the key fields in the internal table
For eg
Row Field
1       A
2       A
3       A
4       B
5       B
6       C
Count of A = 3
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Count of C = 1

Dilip,
I think isn't posible. Only 3 ideas:
1ª, make other table "table2", similar to your actual table.
     table2[] = yourtable[].
     delete table2 where key <> 'A'.
     describe table table2 lines contA.
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2ª, make other table, only with the keys fields and a count field,
    data begin table2
       key_field1,
       cont type i.
    end data.
   when you append lines to yourdata, make a collect to this table:
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    table2-cont = 1.
   collect table2.
   But only works if you can modify the program where data is appended, and you may be carefull when data is deleted :-(...
3ª if your data if filled in a select, you may fill the table2 of point 2ª, making a similar select but:
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from ...
where (the same you have to fill your original table...)
   group by keys.
But you have the same problem is data is deleted later...
I hope that any of the three is useful for you...
Edited by: Diego Alvarez on Jan 5, 2010 5:09 PM

Counting all the rows in a table

I've just come across what I think is a big oversight in the Power Query UI: it doesn't seem to be possible to find the total number of rows in a table using just the functionality available in the UI. I can do this very easily if I write my own expression
using Table.RowCount(), but I would have expected to be able to do this through the UI. At the moment, when I go to the Group By dialog (which is where I'd expect to be able to do this) and delete all the columns in the Group By section the OK button gets
greyed out.
Am I missing something here?
Chris
Check out my MS BI blog I also do
SSAS, PowerPivot, MDX and DAX consultancy and run
public SQL Server and BI training courses in the UK

Hi Miguel,
No, what I was talking about was to be able to use the Group By dialog and have no column to group by - that's to say, I'd just want to be able to count the number of rows in a table (or return the sum of all values in a column, or the min/max etc) and return
a single value. I know I could do this by inserting an artificial column that only contains one distinct value, and using that in the Group By, or by writing my own expression that uses Table.RowCount(), but it seems like a very basic operation that should
be easier to do in the UI.
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Check out my MS BI blog I also do
SSAS, PowerPivot, MDX and DAX consultancy
and run public SQL Server and BI training courses in the UK

How can count no of rows in all tables in one schema

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i want to cound no of rows in my schema ( all tables)
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regards
mohammadi
Message was edited by:
Mohdidubai52

hi
thanx for ur reply
but i got error....
SQL> ED
Wrote file afiedt.buf
1 DECLARE
2 v_rowNo NUMBER := 0;
3 v_sum NUMBER := 0;
4 v_tableName VARCHAR2(100);
5 CURSOR c1 IS
6 SELECT table_name
7 FROM user_tables;
8 BEGIN
9 FOR counter IN c1 LOOP
10 DBMS_OUTPUT.PUT_LINE(counter.table_name);
11 EXECUTE IMMEDIATE 'SELECT COUNT(1) FROM ' || counter.table_name INTO v_ro
wNo;
12 v_sum := v_sum + v_rowNo;
13 END LOOP;
14 DBMS_OUTPUT.PUT_LINE('Number of rows: ' || v_sum);
15* END;
16 /
DECLARE
ERROR at line 1:
ORA-00933: SQL command not properly ended
ORA-06512: at line 11
again
thanx
regards
Mohammadi

To count the records in the database table...

I want to count the number of records in the database table (infotypes PA0000)
is it possible to count ?
Any function module is there?
Thanks in advance..

Hi dhavamani ponnusamy,
SELECT COUNT(*) FROM <DB TABLE NAME> WHERE <CONDITION>.
or
SY-DBCNT Will have total no of records satisfying the given criteria in where clause.
See below sample..
Data: itab like mara occurs 0 with header line.
Select * from mara into table mara.
write:/ sy-dbcnt.
Hope it will solve your problem...
Reward points if useful..
Thanks & Regards
ilesh 24x7

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Hi,
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In simple words, I need to fetch a value from the last row of the record.
For example, I use the below query,
select rownum, empno, ename from emp
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Hence, need help on this.
Regards,
Shivakumar A
Edited by: shiva on Mar 27, 2011 10:14 PM

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Count number of rows in a table

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I have a requirement. I want to frame a SQL, which takes schema name as input and returns tables owned by that schema and number of rows inside a particular table.
A Sample output:
===========
Table            No. of Rows
~~~~          ~~~~~~~~
A                    123
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.Can somebody help me in framing a query for the same.
Regards,

hoek wrote:
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http://laurentschneider.com/wordpress/2007/04/how-do-i-store-the-counts-of-all-tables.html
Laurent's solution most likely was published before IOT. Anyway, IOT ovwerflow tables must be excluded. Otherwise:
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3                    extractvalue(
4                                 xmltype(
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6    from dba_tables
7    where owner = 'OE'
8      and nvl(iot_type,'X') != 'IOT_OVERFLOW'
9 /
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CUSTOMERS                             319
WAREHOUSES                              9
ORDER_ITEMS                           665
ORDERS                                105
INVENTORIES                          1112
PRODUCT_INFORMATION                   288
PRODUCT_DESCRIPTIONS                 8640
PROMOTIONS                              2
PRODUCT_REF_LIST_NESTEDTAB            288
SUBCATEGORY_REF_LIST_NESTEDTAB         21
10 rows selected.
SQL> SY.

Select count(*) for each row of a table

Hello All,
Following query gives a statistics for each user (how many items he owns, home many tickets authored, how many objects he is subscribed to etc...)
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(select count(*) from tkt where originator = auser.id) TKT_ORIGINATE_CNT,
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Hi, Sathish,
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You probably want to do joings, like SBH suggested, rather than scalar sub-queries.
The connection between the auser and item tables
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You should be able to get all the information from the tkt table in one pass. It looks like you need to unpivot the data, so instead of one row per ticket (with 3 different people connected to it), there are 3 rows per ticket, each with only 1 person referenced. This is not necessarily a bad table design. Unpivoting, even more than most other things, depends on your database version, so you'll have to tell what version of Oracle you're using.

Create a counter for the rows in a table using script editor?

Hi ,
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Get the count of rows in a table control

Hi Experts,
How do I get the count of the rows in a table control during run time.
I am developing a BDC in which I have to check all entries in a table control.
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Hi,
Use a variable when u r passing the records from the internal table to the screen fields
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I think this idea may help u.
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Refer to the following link this may help u.
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Count number of rows in table

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HI,
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How to get count of records for each type from internal table

Hi Guys,
I want to implement a logic to find out the count of records in a internal table.
Assume my internal table have one field having the entries as shown below.
Internal table Entries
10
10
10
11
11
12
12
12
12
13
14
14
15
15
15
15
15
16
16
17
18
19
20
20
20
....... etc....
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10's - 3
11's -2 ,
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Could any one help me how to do this.
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Kumar

REPORT zzz.
DATA: i(100),
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START-OF-SELECTION.
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wa_int-linex = '10'.
APPEND wa_int TO gt_int.
wa_int-linex = '10'.
APPEND wa_int TO gt_int.
wa_int-linex = '11'.
APPEND wa_int TO gt_int.
wa_int-linex = '11'.
APPEND wa_int TO gt_int.
wa_int-linex = '12'.
APPEND wa_int TO gt_int.
wa_int-linex = '12'.
APPEND wa_int TO gt_int.
wa_int-linex = '12'.
APPEND wa_int TO gt_int.
wa_int-linex = '12'.
APPEND wa_int TO gt_int.
wa_int-linex = '13'.
APPEND wa_int TO gt_int.
wa_int-linex = '14'.
APPEND wa_int TO gt_int.
wa_int-linex = '14'.
APPEND wa_int TO gt_int.
wa_int-linex = '15'.
APPEND wa_int TO gt_int.
wa_int-linex = '15'.
APPEND wa_int TO gt_int.
wa_int-linex = '15'.
APPEND wa_int TO gt_int.
wa_int-linex = '15'.
APPEND wa_int TO gt_int.
wa_int-linex = '15'.
APPEND wa_int TO gt_int.
wa_int-linex = '16'.
APPEND wa_int TO gt_int.
wa_int-linex = '16'.
APPEND wa_int TO gt_int.
wa_int-linex = '17'.
APPEND wa_int TO gt_int.
wa_int-linex = '18'.
APPEND wa_int TO gt_int.
wa_int-linex = '19'.
APPEND wa_int TO gt_int.
wa_int-linex = '20'.
APPEND wa_int TO gt_int.
wa_int-linex = '20'.
APPEND wa_int TO gt_int.
wa_int-linex = '20'.
APPEND wa_int TO gt_int.
LOOP AT gt_int INTO wa_int.
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ULINE.
SKIP 3.
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consider clearing leading/trainling spaces...

Procudure to count all the rows in a all tables in the schema

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CREATE OR REPLACE PROCEDURE TC_TABLEROWCOUNT(OWNER IN varchar2)
IS
row_count number;
cursor get_tab is
select table_name, num_rows
from all_tables
where owner='MAXDEV';
begin
dbms_output.put_line('Checking Record Counts for schema maxdev ');
FOR get_tab_rec IN get_tab LOOP
     BEGIN
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END LOOP;
END;
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Thanks for any help Tony

The boss gave me 5 pages of tables and wants to know how many row there are in each table. There is a problem of one DB being out of sync with another.
But I have managed to work the problem though.
here is the working code:
CREATE OR REPLACE PROCEDURE TC_TABLEROWCOUNT (
TableOwner IN varchar2)
IS
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vTable varchar2(30);
v_sqlstmt varchar2(100);
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select table_name, num_rows
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begin
dbms_output.put_line('Checking Record Counts for schema maxdev ');
FOR get_tab_rec IN get_tab LOOP
vTable := get_tab_rec.table_name;
v_sqlstmt := 'SELECT count(*) from '||vTable;
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Count total records in 2 tables

Hello,
I am using this query
select count(*) from table1, table2) to get the total number of records in those 2 tables. Actually I have only 7 records in both the tables, but I get 15. What could be the problem?
Also I need to find out another query where in I can find out which table is giving a particular record. e.g table1 has firstname,lastname and table2 has firstman,lastman. I need to know that firstname has come from tabl1 and firstman has come from table2.
Please help.
Thanks

Well, if I'm not misstaken the difference between
UNION and UNION ALL is that UNION ALL will include
duplicates while UNION will ignore the duplicates.The UNION clause forces all rows returned by each
portion of the UNION to be sorted and merged and
duplicates to be filtered before the first row is
returned. A UNION ALL simply returns all rows
including duplicates and does not have to perform any
sort, merge or filter. It is much more efficient.
(Although the performance factor may be irrelevant in
the OP's situation - the issue of duplicate rows
isn't)And what did I say?
Asuming the OP does not have duplicates within each
table (when he/she would really violate relational
database theory) Why do you assume that? Why would this violate
relational database theory?If you don't have a primary key, it sure does. I don't have my C J Date book here, but this looks like an accurate transcript of C F Codd's twelve rules a relational database must obay: http://engr.smu.edu/~fmoore/notes/12rules.htm Look at number 2...
there will not be any difference between the twoUNION "versions".
That is correct. I just didn't want to change that
part of the code ( String s1 = rs.getString(2)...)
since the OP asked about the database query.i wasn't referring to the OP, hence the 'ps' and 'for
anyone doing this sort of thing in Oracle' and 'if you
tend to use the column name version of getString()'
Yes, you are again correct. I just explained why I wrote what I wrote.

Count of records/rows in a Table

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