Find Total Number of Rows in Database

I am trying to find total number of rows in Database? Thanks in advance

I'd come back to a question of "why". What possible reason could you have to want to know the number of rows in every table in the database?
This seems like it is a request from someone non-technical where they're not sure exactly what they need to ask to get the information they want. I'm forseeing something along the lines of
User: How many rows are in the database
DBA: Ummm.... <<goes off and spends a lot of resources to count>>> ... 1 billion.
User: Wow, that's a lot... How big are those rows...
DBA: Hmmm... <<goes off and spends more time trying to find an average row size>>... 100 bytes
User: <<Plugs numbers into Excel>>... OK, our database is 93 GB, so we need to order 100 GB of disk for our new environment.
DBA: <<Months later, after 100 GB of disk has been budgeted, purchased, and delivered>> User, you didn't order enough disk for our disaster recovery environment.
User: You said our database was only 93 GB!!
DBA: 93 GB of data. Plus 100 GB of indexes, TEMP, UNDO, space for archived logs, ...
When "odd" requests come down, it's generally the case that the person asking the question doesn't know what question they really want to ask because they don't have the domain knowledge to know how to ask the question. Walking over and asking them what they're hoping to accomplish/ what they're using the data for generally leads to a case where
- The user gets exactly the information they need, not the information they think they want
- The DBA does a lot less work, since the right question is almost always easier to answer
- The user thinks of the DBA as a really helpful sort of guy and remembers how helpful you were in the past when you have to push back on other things later
- No one ends up playing the blame game when the user gets just what they asked for and not what they want.
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

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Total number of record in database??

Hi,
How to find total number of record in database using Single Query/Statement?
Thanks

Here we go, in a Single Statement Block
SQL> ed
Wrote file afiedt.buf
1 DECLARE
2    v_cnt NUMBER := 0;
3    v_tot NUMBER := 0;
4    CURSOR cur_tables IS
5      SELECT table_name FROM user_tables;
6 BEGIN
7    DBMS_OUTPUT.ENABLE(1000000);
8    FOR t IN cur_tables
9    LOOP
10      EXECUTE IMMEDIATE 'SELECT COUNT(*) FROM '||t.table_name INTO v_cnt;
11      v_tot := v_tot + v_cnt;
12    END LOOP;
13    DBMS_OUTPUT.PUT_LINE('Total Table Rows: '||v_tot);
14* END;
SQL> /
Total Table Rows: 5850553
PL/SQL procedure successfully completed.
SQL>What use it is is anybody's guess.
Note: This only works on the users own tables, not all the system tables or tables from other schemas in the database.

Trying to find the number of rows in a ResultSet

I am trying to find the number of rows in a ResultSet, using the following code:
rs = st.executeQuery(query);
rs.last(); // to move the cursor to the last row
System.out.println(rs.getRow());
However, I am getting this error:
java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]Unsupported method: ResultSet.last
Whats going wrong??

praveen_potru wrote:
You might have not used scrollable result set..
Try like this:
stmt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);rs = stmt.executeQuery(sqlString);
// Point to the last row in resultset.
rs.last();
// Get the row position which is also the number of rows in the ResultSet.
int rowcount = rs.getRow();
System.out.println("Total rows for the query: "+rowcount);
cheersAnd I hope the OP would read it because the thread is a year old.

Can we find the number of rows in table from the dump file

Hi All,
Can we find the number of rows in table from the dump file with out importing the table in to the database?
Please let me know ,if any option is there.
Thanks,
Kumar.

<s>Try to import with option SHOW=Y, that should skip the number of rows which are into a table from a dump file.</s> 
 
Nicolas. 
Oops, sorry, that doesn't show the number of lines... 
Message was edited by: 
N. Gasparotto

Total number of rows

Is there anyway of getting the total number of rows in the database via JDBC on a MySQL database?

thanks guys for your help but since my returned result set is huge anything that has to load the whole result set in memory is absolutely out of the question.
For my situation what DrClap suggested works wonders. I use
SELECT COUNT(*) FROM SomeTable
and then
count = rs.getInt(1);
This way I get the total number of rows plus its really quick.
Thanks DrClap

TableView Control(finding total no of Rows & Columns)

Dear ALL SDN Members,
Please tell me the method by which we can obtain total no. of rows and columns in TableView control.

Hi,
You can use Describe internal table to find the Number of Rows in the table control.or tablecontrol-lines will give the number of rows.
for getting the number of columns you have to call the FM REUSE_ALV_FIELDCATALOG_MERGE
data: v_lines type i.
call function 'REUSE_ALV_FIELDCATALOG_MERGE'
EXPORTING
 I_PROGRAM_NAME = sy-repid
 I_INTERNAL_TABNAME = 'ITAB'
 I_INCLNAME = sy-repid
changing
 ct_fieldcat = IT_FIELDCAT
EXCEPTIONS
 INCONSISTENT_INTERFACE = 1
 PROGRAM_ERROR = 2
 OTHERS = 3
if sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
endif.
describe table it_fieldcat lines v_lines.
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Hw to find total number of records

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Thanks in ADv
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Hello Linda,
As you have lots of answers on first 2 so i'll start from 3rd onward.
3. Sandbox is mostly practice system where you can do all kind of R&D, mirror sys can be mirror image of any system depends on the organization and instance of system is again mirror image of one system.
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MAny Thank in advacne

Check this http://obiee100.blogspot.com/2011/07/display-total-number-of-records-in.html
and
http://docs.oracle.com/cd/E28280_01/bi.1111/e10544/appsql.htm#CHDCDIDA
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Mark as correct/helpful

Count total number of rows present in the schema

Count total number of rows present in the schema including table, sequence, view
Desirable Output
table          Sequence     Views
1000          20          1000

You mean You need to count the No of Tables, View and Sequence Present in the Schema ??
Hi Some thing like this,
SELECT a.view_cnt AS "View Count", b.tab_cnt AS "Table Count",
       c.seq_cnt AS "Sequence Count"
FROM (SELECT COUNT (*) view_cnt
          FROM USER_VIEWS) a,
       (SELECT COUNT (*) tab_cnt
          FROM USER_TABLES) b,
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View Count      Table Count      Sequence Count
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Shankar
Edited by: Shankar Viji on Aug 28, 2012 3:03 AM

Total number of rows fetched

hi
Is there any way to get total number of rows fetched along with
result set in a single query
jos

Hi,
You are referring to "Analytical Functions"
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How to set total number of rows of table control

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I want to set the total number of rows of table control. I don't want to display the blank rows in table.
Regards,
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Need some fine tuning regarding the scrollbar height but it's a start
Unless this isn't what you asked for
Small number of rows
Large number of rows
Attachments:
PlayingWithTable.vi ‏17 KB

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I am just showing this to show how to get the rowcount along with the cursor, if the program has so much gap of between verifying the count(*) and opening the cursor.
Justin actually covered this, he said, oracle has to spend some resources to build this functionality. As it is not most often required, it does not makes much sence to see it as a built-in feature. However, if we must see the rowcount when we open the cursor, here is a way, but it is little bit expensive.
SQL> create table emp_crap as select * from emp where 1 = 2;
Table created.
SQL> declare
2   v_cnt     number := 0;
3   zero_rows         exception;
4 begin
5    for rec in (select * from (select rownum rn, e.ename from emp_crap e) order by 1 desc)
6     loop
7        if v_cnt = 0 then
8           v_cnt := rec.rn;
9        end if;
10     end loop;
11     if v_cnt = 0 then
12        raise zero_rows;
13     end if;
14   exception
15    when zero_rows then
16      dbms_output.put_line('No rows');
17   end;
18 /
No rows
PL/SQL procedure successfully completed.
-- Now, let us use the table, which has the data
SQL> declare
2   v_cnt     number := 0;
3   zero_rows         exception;
4 begin
5    for rec in (select * from
6          (select rownum rn, e.ename from emp e)
7          order by 1 desc)
8     loop
9        if v_cnt = 0 then
10           v_cnt := rec.rn;
11           dbms_output.put_line(v_cnt);
12        end if;
13     end loop;
14     if v_cnt = 0 then
15        raise zero_rows;
16     end if;
17   exception
18    when zero_rows then
19      dbms_output.put_line('No rows');
20   end;
21 /
14
PL/SQL procedure successfully completed.Thx,
Sri

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Find Total Number of Rows in Database

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