Basic SQL statement , Finding Repeated Values

Hi guys, I have a table with columns
user_id (varchar2) and mobileno(varchar2).
A user may have more then 1 mobile number.
How do i my sql statement such that i can..
1) see each and every exact mobile number of a particular user without repeating the user_id everytime a row is shown.
2) see the AMOUNT of mobile number own by a particular user ?
3) see the AMOUNT of mobile number own by every user in the table?
Thanks Pals! this forum really has the fastest respond rate.

Hi,
About getting only one row per user what you need is to build a function that will return you the numbers concatenated.
About the other thing you want maybe you can do something like this:
select distinct
tab.name,
count(tab.cell_num) over (partition by tab.name) cell_per_user,
count(tab.cell_num) over () total_cells
from
select 'A' as name,1111 as cell_num from dual
union
select 'A',2222 from dual
union
select 'B',3333 from dual) Tab

Similar Messages

Returning sql statement instead of values from database

hi am reading value from database but my problem is am get sql statement values instead of values in database
my code is
java:337)

There is no doubt: you get what you want:
return s_getValue;
bye
TPD

SQL to find a value in a database column

Hi All,
I need to write a pl/sql block to find a given value in any database column.
Is there a written function or program which I could use.
Requirement is to see which columns in which table has the value 'ABCD123' in whole database
Thanks,
S

NOT TESTED
declare
seeking varchar2(30) := 'ABCD123';
begin
create table result_table as
select owner,table_name,column_name,cast(null as varchar2(30)) column_value
    from all_tab_cols
   where 1 = 0;
for r in (select owner,table_name,column_name
              from all_tab_cols
             where data_type = 'VARCHAR2'
               and data_length >= length(seeking)
loop
    execute immediate 'insert into result_table ' ||
                      'select ' || r.owner || ',' || r.table_name || ',' || r.column_name || ',''' || seeking || '''' ||
                      ' from dual ' ||
                      ' where exists(select null ' ||
                      '                from ' || r.owner || '.' || r.table_name ||
                      '               where ' || r.column_name || ' = ''' || seeking || '''' ||
end loop;
commit;
end;Regards
Etbin

Need query to find repeating values, please help

I need help with SQL or whatever you guys think is the best way to do this, maybe PL/SQL.
Basically it like this, in the database 10G, there are two field for address:
ADDESS_DELVRY - street address for example would be stored here
ADDESS_DELVRY2 - apartment building, suite number or PBM would be stored here
but sometimes I see the Apartment B-123 in both fields, so I need to find those duplicates, if there is a way.
So for example:
ADDESS_DELVRY - 123 Elm Street Apartment 2B
ADDESS_DELVRY2 - Apartment 2B
This is a problem, because then the Apartment gets printed twice on the mail piece. I think there is a small percentage that have this problem and am trying to find out the best way to ID them, maybe use REG_EXP ??
Not sure, please help, thanks!

Soundex works how it's designed to work, which unfortunately is a very poor approximation at words sounding the same.
Using the UTL_MATCH package is a far better way to check for similarity between strings.
Ok. Given the OPs challenge here; a simple, or messy (we don't know), data cleaning task, I think soundex was worth mentioning.
Also, the reply that "soundex don't [doesn't] work" , given a working example , I think we can safely conclude
that UTL_MATCH is way above his league.
I don't understand how the OP has better use of
SELECT UTL_MATCH.EDIT_DISTANCE('Second Avenue 12 second floor', 'second fl.') dist FROM DUAL;
DIST
20
1 row selected.than
SELECT *
FROM dual
WHERE SOUNDEX ('Second Avenue 12 second floor') = SOUNDEX ('second fl.')
X
1 row selected.given the task at hand, but all right I'm not going to argue either.

HOW TO: Post a SQL statement tuning request - template posting

This post is not a question, but similar to Rob van Wijk's "When your query takes too long ..." post should help to improve the quality of the requests for SQL statement tuning here on OTN.
On the OTN forum very often tuning requests about single SQL statements are posted, but the information provided is rather limited, and therefore it's not that simple to provide a meaningful advice. Instead of writing the same requests for additional information over and over again I thought I put together a post that describes how a "useful" post for such a request should look like and what information it should cover.
I've also prepared very detailed step-by-step instructions how to obtain that information on my blog, which can be used to easily gather the required information. It also covers again the details how to post the information properly here, in particular how to use the \ tag to preserve formatting and get a fixed font output:
http://oracle-randolf.blogspot.com/2009/02/basic-sql-statement-performance.html
So again: This post here describes how a "useful" post should look like and what information it ideally covers. The blog post explains in detail how to obtain that information.
In the future, rather than requesting the same additional information and explaining how to obtain it, I'll simply refer to this HOW TO post and the corresponding blog post which describes in detail how to get that information.
*Very important:*
Use the \ tag to enclose any output that should have its formatting preserved as shown below.
So if you want to use fixed font formatting that preserves the spaces etc., do the following:
\   This preserves formatting
\And it will look like this:
   This preserves formatting
   . . .Your post should cover the following information:
1. The SQL and a short description of its purpose
2. The version of your database with 4-digits (e.g. 10.2.0.4)
3. Optimizer related parameters
4. The TIMING and AUTOTRACE output
5. The EXPLAIN PLAN output
6. The TKPROF output snippet that corresponds to your statement
7. If you're on 10g or later, the DBMS_XPLAN.DISPLAY_CURSOR output
The above mentioned blog post describes in detail how to obtain that information.
Your post should have a meaningful subject, e.g. "SQL statement tuning request", and the message body should look similar to the following:
*-- Start of template body --*
The following SQL statement has been identified to perform poorly. It currently takes up to 10 seconds to execute, but it's supposed to take a second at most.
This is the statement:
select
from
         t_demo
where
         type = 'VIEW'
order by
         id;It should return data from a table in a specific order.
The version of the database is 11.1.0.7.
These are the parameters relevant to the optimizer:
SQL>
SQL> show parameter optimizer
NAME                                 TYPE        VALUE
optimizer_capture_sql_plan_baselines boolean     FALSE
optimizer_dynamic_sampling           integer     2
optimizer_features_enable            string      11.1.0.7
optimizer_index_caching              integer     0
optimizer_index_cost_adj             integer     100
optimizer_mode                       string      ALL_ROWS
optimizer_secure_view_merging        boolean     TRUE
optimizer_use_invisible_indexes      boolean     FALSE
optimizer_use_pending_statistics     boolean     FALSE
optimizer_use_sql_plan_baselines     boolean     TRUE
SQL>
SQL> show parameter db_file_multi
NAME                                 TYPE        VALUE
db_file_multiblock_read_count        integer     8
SQL>
SQL> show parameter db_block_size
NAME                                 TYPE        VALUE
db_block_size                        integer     8192
SQL>
SQL> show parameter cursor_sharing
NAME                                 TYPE        VALUE
cursor_sharing                       string      EXACT
SQL>
SQL> column sname format a20
SQL> column pname format a20
SQL> column pval2 format a20
SQL>
SQL> select
2            sname
3          , pname
4          , pval1
5          , pval2
6 from
7          sys.aux_stats$;
SNAME                PNAME                     PVAL1 PVAL2
SYSSTATS_INFO        STATUS                          COMPLETED
SYSSTATS_INFO        DSTART                          01-30-2009 16:25
SYSSTATS_INFO        DSTOP                           01-30-2009 16:25
SYSSTATS_INFO        FLAGS                         0
SYSSTATS_MAIN        CPUSPEEDNW              494,397
SYSSTATS_MAIN        IOSEEKTIM                    10
SYSSTATS_MAIN        IOTFRSPEED                 4096
SYSSTATS_MAIN        SREADTIM
SYSSTATS_MAIN        MREADTIM
SYSSTATS_MAIN        CPUSPEED
SYSSTATS_MAIN        MBRC
SYSSTATS_MAIN        MAXTHR
SYSSTATS_MAIN        SLAVETHR
13 rows selected.Here is the output of EXPLAIN PLAN:
SQL> explain plan for
2 -- put your statement here
3 select
4            *
5 from
6            t_demo
7 where
8            type = 'VIEW'
9 order by
10            id;
Explained.
Elapsed: 00:00:00.01
SQL>
SQL> select * from table(dbms_xplan.display);
PLAN_TABLE_OUTPUT
Plan hash value: 1390505571
| Id | Operation                   | Name     | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT            |          |     1 |    60 |     0   (0)| 00:00:01 |
|   1 | TABLE ACCESS BY INDEX ROWID| T_DEMO   |     1 |    60 |     0   (0)| 00:00:01 |
|* 2 |   INDEX RANGE SCAN          | IDX_DEMO |     1 |       |     0   (0)| 00:00:01 |
Predicate Information (identified by operation id):
   2 - access("TYPE"='VIEW')
14 rows selected.Here is the output of SQL*Plus AUTOTRACE including the TIMING information:
SQL> rem Set the ARRAYSIZE according to your application
SQL> set autotrace traceonly arraysize 100
SQL> select
2            *
3 from
4            t_demo
5 where
6            type = 'VIEW'
7 order by
8            id;
149938 rows selected.
Elapsed: 00:00:02.21
Execution Plan
Plan hash value: 1390505571
| Id | Operation                   | Name     | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT            |          |     1 |    60 |     0   (0)| 00:00:01 |
|   1 | TABLE ACCESS BY INDEX ROWID| T_DEMO   |     1 |    60 |     0   (0)| 00:00:01 |
|* 2 |   INDEX RANGE SCAN          | IDX_DEMO |     1 |       |     0   (0)| 00:00:01 |
Predicate Information (identified by operation id):
   2 - access("TYPE"='VIEW')
Statistics
          0 recursive calls
          0 db block gets
     149101 consistent gets
        800 physical reads
        196 redo size
    1077830 bytes sent via SQL*Net to client
      16905 bytes received via SQL*Net from client
       1501 SQL*Net roundtrips to/from client
          0 sorts (memory)
          0 sorts (disk)
     149938 rows processed
SQL>
SQL> disconnect
Disconnected from Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing optionsThe TKPROF output for this statement looks like the following:
TKPROF: Release 11.1.0.7.0 - Production on Mo Feb 23 10:23:08 2009
Copyright (c) 1982, 2007, Oracle. All rights reserved.
Trace file: orcl11_ora_3376_mytrace1.trc
Sort options: default
count    = number of times OCI procedure was executed
cpu      = cpu time in seconds executing
elapsed = elapsed time in seconds executing
disk     = number of physical reads of buffers from disk
query    = number of buffers gotten for consistent read
current = number of buffers gotten in current mode (usually for update)
rows     = number of rows processed by the fetch or execute call
select
from
         t_demo
where
         type = 'VIEW'
order by
         id
call     count       cpu    elapsed       disk      query    current        rows
Parse        1      0.00       0.00          0          0          0           0
Execute      1      0.00       0.00          0          0          0           0
Fetch     1501      0.53       1.36        800     149101          0      149938
total     1503      0.53       1.36        800     149101          0      149938
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 88
Rows     Row Source Operation
149938 TABLE ACCESS BY INDEX ROWID T_DEMO (cr=149101 pr=800 pw=0 time=60042 us cost=0 size=60 card=1)
149938   INDEX RANGE SCAN IDX_DEMO (cr=1881 pr=1 pw=0 time=0 us cost=0 size=0 card=1)(object id 74895)
Elapsed times include waiting on following events:
Event waited on                             Times   Max. Wait Total Waited
----------------------------------------   Waited ---------- ------------
SQL*Net message to client                    1501        0.00          0.00
db file sequential read                       800        0.05          0.80
SQL*Net message from client                  1501        0.00          0.69
********************************************************************************The DBMS_XPLAN.DISPLAY_CURSOR output:
SQL> -- put your statement here
SQL> -- use the GATHER_PLAN_STATISTICS hint
SQL> -- if you're not using STATISTICS_LEVEL = ALL
SQL> select /*+ gather_plan_statistics */
2 *
3 from
4 t_demo
5 where
6 type = 'VIEW'
7 order by
8 id;
149938 rows selected.
Elapsed: 00:00:02.21
SQL>
SQL> select * from table(dbms_xplan.display_cursor(null, null, 'ALLSTATS LAST'));
PLAN_TABLE_OUTPUT
SQL_ID d4k5acu783vu8, child number 0
select   /*+ gather_plan_statistics */          * from          t_demo
where          type = 'VIEW' order by          id
Plan hash value: 1390505571
| Id | Operation                   | Name     | Starts | E-Rows | A-Rows |   A-Time   | Buffers | Reads |
|   0 | SELECT STATEMENT            |          |      1 |        |    149K|00:00:00.02 |     149K|   1183 |
|   1 | TABLE ACCESS BY INDEX ROWID| T_DEMO   |      1 |      1 |    149K|00:00:00.02 |     149K|   1183 |
|* 2 |   INDEX RANGE SCAN          | IDX_DEMO |      1 |      1 |    149K|00:00:00.02 |    1880 |    383 |
Predicate Information (identified by operation id):
   2 - access("TYPE"='VIEW')
20 rows selected.I'm looking forward for suggestions how to improve the performance of this statement.
*-- End of template body --*
I'm sure that if you follow these instructions and obtain the information described, post them using a proper formatting (don't forget about the \ tag) you'll receive meaningful advice very soon.
So, just to make sure you didn't miss this point:Use proper formatting!
If you think I missed something important in this sample post let me know so that I can improve it.
Regards,
Randolf
Oracle related stuff blog:
http://oracle-randolf.blogspot.com/
SQLTools++ for Oracle (Open source Oracle GUI for Windows):
http://www.sqltools-plusplus.org:7676/
http://sourceforge.net/projects/sqlt-pp/

Alex Nuijten wrote:
...you missed the proper formatting of the Autotrace section ;-)Alex,
can't reproduce, does it still look unformatted? Or are you simply kidding? :-)
Randolf
PS: Just noticed that it actually sometimes doesn't show the proper formatting although the code tags are there. Changing to the \ tag helped in this case, but it seems to be odd.
Edited by: Randolf Geist on Feb 23, 2009 11:28 AM
Odd behaviour of forum software

Trace all sql statements

Hi,
Is it possible to trace all the SQL's into one trace file or any other alternative to capture all the SQL statements.

1. Export will take some time or a long time to run.
You will have to either
a. Use CONSISTENT=Y (and hope that you are able to get a consistent export)
b. Stop Transactions for the duration.
In option a. if you do allow transactions those transactions will appear neither in the Export NOR in the "trace file" that you will be generating later !! You WILL lose transactions.
2. There's no way to get a "trace file" to capture all SQL statements and bind values across multiple database sessions such that they are properly synchronised in time.
a. You can't get a trace file that you can simply run to reapply transactions.
b. You can't sequence transactions from multiple sessions running concurrently.
3. How fast do you REALLY think you will be able to apply that "trace file" (which, in any case, you CANNOT generate) ? It will take noticeable to considerable time.
4. How do you propose to transfer the Export dump to the remote location ? When you have no network connectivity ? Via tapes, transfered by courier ? Then why can't you transfer a Database Hot Backup and ArchiveLogs via tapes, transferred by courier ?
Hemant K Chitale
http://hemantoracledba.blogspot.com

SQL Statement ignored performing List of Values query

Hi, New user just learning the basics. I have created a simple table PERSON with columns, ID, firstname, lastname, phone, city, State_ID
Then clicked create Lookup table - State_Lookup with columns State_ID and State_Name.
I create a page, include all columns from PERSON. For State the field is a select list that should do a lookup form the STATE_LOOKUP table. (I have entered 4 states in the table)
I am getting the following error however:
Error: ORA-06550: line 1, column 14: PL/SQL: ORA-00904: "STATE_ID": invalid identifier ORA-06550: line 1, column 7: PL/SQL: SQL Statement ignored performing List of Values query: "select STATE_ID d, STATE_ID v from STATE_ID_LOOKUP order by 1".
I have not entered any sql, just selected all of my options using defaults and dropdowns. What is causing the error and what do I need to change?
Thanks

Okay, learned something: The database link name used, must not contain a dash. The DB_DOMAIN is appended automatically when you create a DB link, so if IT contains a dash, the db link name does as well. Check DBA_DB_LINKS to make sure you don't hit this well-hidden feature.
Regards
Martin Klier
[http://www.usn-it.de|http://www.usn-it.de]

Prepared SQL statement to test existence of a value in a row

Excuse my ignorance in SQL. I didn't do much in SQL queries or DB design in general, but I'm eager to learn.
Idea behind: I'm traversing a directory tree (Java, jdbc) (depth first) and want to collect all files
in that tree and put the as BLOBS into the database.
To find out whether a file is the same as another file (possibly in a different path) I calculate the md5sum
(not sure whether it is proof against collisions or if I should use SHA-256 or some combination of md5sum + chksum).
Anyway, let the md5sum be the unique value that makes the identity of a file for now.
My problem: Find the jdbc/SQL statements that let me decide whether the file (md5sum) is already stored in a ROW
upon which I can decide to either do the INSERT or mark the existing file as being present in a different path.
I stumbled across the problem in the moment when I first time tried to INSERT a row and got told that
md5sum gotta be unique.
Any ideas for design and query? The code example below is incomplete. Especially what I'm looking for is
how to construct a prepared SQL statement into which I can inject the variable later found (md5sum)
Whether I should do that by COUNT(*) or a different method?
Christoph
Here is my sketchy code (Netbeans project) under construction:
* To change this template, choose Tools | Templates
* and open the template in the editor.
package testsqlite;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.sql.*;
import java.util.Iterator;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
* @author chris
public class Main {
* @param args the command line arguments
private static Connection conn;
private static String sql="INSERT INTO part(name,md5sum) VALUES (?,?)";
private static PreparedStatement pstmnt,pstmnt_ifexists ;
private static String sql_ifexists="SELECT COUNT(*) FROM part WHERE md5sum=?"; // ???
public static void main(String[] args) throws Exception{
// TODO code application logic here
System.out.println("Testsuite-Collector\n");
String path="c:/usr/local/www/data/testsuite/mandanten/chris/probanden";
File f = new File(path);
Class.forName ("org.sqlite.JDBC");
conn =
DriverManager.getConnection("jdbc:sqlite:c:/users/chris/testsuite/versionen");
Statement stat = conn.createStatement();
pstmnt = conn.prepareStatement(sql);
pstmnt_ifexists = conn.prepareStatement(sql_ifexists);
// process
Traverse(f);
// watch result
ResultSet rs = stat.executeQuery("select * from part;");
while (rs.next()) {
System.out.print("name=" + rs.getString("name") + " ");
System.out.println("md5sum= " + rs.getString("md5sum"));
rs.close();
conn.close();
private static void Traverse(File f) throws IOException {
File[] files = f.listFiles();
for( File file : files) {
if(file.isDirectory()){
Traverse(file);
else {
try {
if(file.length() > 0){
FileInputStream fis = new FileInputStream( file );
String md5 = org.apache.commons.codec.digest.DigestUtils.md5Hex( fis );
System.out.println(file.length() +" " md5"->"+file.getPath());
// check whether md5sum is already existing
pstmnt_ifexists=?????
pstmnt.setString(1, file.getPath());
pstmnt.setString(2, md5);
pstmnt.executeUpdate();
catch (SQLException e) {
System.out.println("SQL error:" e.getMessage()"\n");
}

And you seriously think that attempting to insert a record and catching the error of it failing is a good design!?!?I certainly do. I agree with Peter here. You can either test for the existence of the record and insert it if absent, or insert the record willy-nilly and catch the exception. The second option is (a) atomic even without transactions and (b) clearly twice as efficient. Same consideration applies to e.g.
if (!map.containsKey(key))
map.put(key, value);
else
; // it was already thereas opposed to
if (!map.put(key, value)
; // it was already thereand many other situations of this kind, e.g.
try
if (InetAddress.isReachable(ip))
    s = new Socket(ip, port);
else
    ; // host not up
catch (ConnectException exc)
// the host wasn't up during connect
}as opposed to
try
s = new Socket(ip, port);
catch (ConnectException exc)
// host not up
}or
try
if (file.exists())
    in = new FileInputStream(file);
else
    ; // it wasn't there
catch (IOException exc)
// it wasn't there, etc ...
}as opposed to
try
in = new FileInputStream(file);
catch (FileNotFoundException exc)
// it wasn't there
}Slight absence of timing window problems in the cases that detect via exceptions, and considerably simpler code. Phobias about how to use exception handling need to be overcome.
I've also had it seriously argued to me that you shouldn't catch EOFExceptions, merely change the format of your file so you 'know' when one is coming up. Sorry to say that I think this sort of thing is complete rubbish. There is a need for an out of band EOF signal with all the readXXX() methods, and this is it.

[OCI] Parameter Binding, repeated Statements with differing values

Hello
I am working on an application written in C which sends about 50 different SQL Statements to an Oracle Database using OCI. These Statements are executed repeatedly with different values.
In order to improve performance I would like to know what possibilities I have.
Whats the benefit of the following "techniques" ?
- Parameter Binding
- Statement Caching
What else could I look into?
with friendly greetings.

It doesn't take zero-time of course, and it does level-off after a while, but array-bind/define or pre-fetching can make a significant impact on performance:
truncated table: 0.907 / 0.918
insert_point_stru_1stmt_1commit: x100,000: 0.141 / 0.144Above I truncate the table to get repeatable numbers; deleting all rows from a previous run leaves a large free list (I guess...), and performance of this little contrived benchmark degrades non-negligeably otherwise. This is a single array-bind insert statement.
fetched 100,000 rows. (0 errors)
select_first_n_points: x100,000@0: 7.594 / 7.608
fetched 100,000 rows. (0 errors)
select_first_n_points: x100,000@1: 4.000 / 4.004
fetched 100,000 rows. (0 errors)
select_first_n_points: x100,000@10: 0.906 / 0.910
fetched 100,000 rows. (0 errors)
select_first_n_points: x100,000@100: 0.297 / 0.288
fetched 100,000 rows. (0 errors)
select_first_n_points: x100,000@1,000: 0.204 / 0.204
fetched 100,000 rows. (0 errors)
select_first_n_points: x100,000@10,000: 0.265 / 0.268
fetched 100,000 rows. (0 errors)Above I do a regular "scalar" define, but turn pre-fetching on (default is one row, but I tested with pre-fetching completly off too). @N means pre-fetch N rows.
select_points_array: x100,000@10: 0.969 / 0.967
fetched 100,000 rows. (0 errors)
select_points_array: x100,000@100: 0.250 / 0.251
fetched 100,000 rows. (0 errors)
select_points_array: x100,000@1,000: 0.156 / 0.167
fetched 100,000 rows. (0 errors)
select_points_array: x100,000@10,000: 0.156 / 0.157
fetched 100,000 rows. (0 errors)Above I use array-defines instead of pre-fetch.
select_points_struct: x100,000@10: 0.938 / 0.935
fetched 100,000 rows. (0 errors)
select_points_struct: x100,000@100: 0.219 / 0.217
fetched 100,000 rows. (0 errors)
select_points_struct: x100,000@1,000: 0.140 / 0.140
fetched 100,000 rows. (0 errors)
select_points_struct: x100,000@1,000: 0.140 / 0.140Above I use array-of-struct defines instead of pre-fetch or array-bind. Performance is just a little better, probably because of better memory "locality" with structures.
The table is simple:
create table point_tab(
id number,
x binary_float,
y binary_float,
z binary_float
So each row is 22 + 4 + 4 + 4 = 34 bytes. There are no constraints or indexes of course to make it as fast as possible (this is 11g on XP win32, server and client on the same machine, single user, IPC protocol, so it doesn't get much better than this, and is not realistic of true client-server multi-user conditions).
There aren't enough data point to confirm or not your prediction that the advantage of array-bind level-off at the packet size threshold, but what you write makes sense to me.
So I went back and tried more sizes. 8K divided by 34 bytes is 240 rows, so I selected 250 rows as the "middle", and bracketed it with 2 upper and lower values which "double" up or down the number of rows:
truncated table: 0.953 / 0.960
insert_point_stru_1stmt_1commit: x100,000: 0.219 / 0.220
fetched 100,000 rows. (0 errors)
select_first_n_points: x100,000@67: 0.329 / 0.320
fetched 100,000 rows. (0 errors)
select_first_n_points: x100,000@125: 0.297 / 0.296
fetched 100,000 rows. (0 errors)
select_first_n_points: x100,000@250: 0.250 / 0.237
fetched 100,000 rows. (0 errors)
select_first_n_points: x100,000@500: 0.218 / 0.210
fetched 100,000 rows. (0 errors)
select_first_n_points: x100,000@1,000: 0.187 / 0.195
fetched 99,964 rows. (0 errors)
select_points_array: x99,964@67: 0.297 / 0.294
fetched 100,000 rows. (0 errors)
select_points_array: x100,000@125: 0.235 / 0.236
fetched 100,000 rows. (0 errors)
select_points_array: x100,000@250: 0.203 / 0.206
fetched 100,000 rows. (0 errors)
select_points_array: x100,000@500: 0.188 / 0.179
fetched 100,000 rows. (0 errors)
select_points_array: x100,000@1,000: 0.156 / 0.165
fetched 99,964 rows. (0 errors)
select_points_struct: x99,964@67: 0.250 / 0.254
fetched 100,000 rows. (0 errors)
select_points_struct: x100,000@125: 0.203 / 0.207
fetched 100,000 rows. (0 errors)
select_points_struct: x100,000@250: 0.172 / 0.168
fetched 100,000 rows. (0 errors)
select_points_struct: x100,000@500: 0.157 / 0.152
fetched 100,000 rows. (0 errors)
select_points_struct: x100,000@1,000: 0.125 / 0.129As you can see, it still gets faster at 1,000, which is about 32K. I don't know the packet size of course, but 32K sounds big for a packet.
truncated table: 2.937 / 2.945
insert_point_stru_1stmt_1commit: x100,000: 0.328 / 0.324
fetched 100,000 rows. (0 errors)
select_first_n_points: x100,000@1,000: 0.250 / 0.250
fetched 100,000 rows. (0 errors)
select_first_n_points: x100,000@2,000: 0.266 / 0.262
fetched 100,000 rows. (0 errors)
select_first_n_points: x100,000@3,000: 0.250 / 0.254
fetched 100,000 rows. (0 errors)
select_first_n_points: x100,000@4,000: 0.266 / 0.273
fetched 100,000 rows. (0 errors)
select_first_n_points: x100,000@5,000: 0.281 / 0.278
fetched 100,000 rows. (0 errors)
select_points_array: x100,000@1,000: 0.172 / 0.165
fetched 100,000 rows. (0 errors)
select_points_array: x100,000@2,000: 0.157 / 0.159
fetched 99,000 rows. (0 errors)
select_points_array: x99,000@3,000: 0.156 / 0.157
fetched 100,000 rows. (0 errors)
select_points_array: x100,000@4,000: 0.141 / 0.155
fetched 100,000 rows. (0 errors)
select_points_array: x100,000@5,000: 0.157 / 0.164
fetched 100,000 rows. (0 errors)
select_points_struct: x100,000@1,000: 0.125 / 0.129
fetched 100,000 rows. (0 errors)
select_points_struct: x100,000@2,000: 0.125 / 0.123
fetched 99,000 rows. (0 errors)
select_points_struct: x99,000@3,000: 0.125 / 0.120
fetched 100,000 rows. (0 errors)
select_points_struct: x100,000@4,000: 0.125 / 0.121
fetched 100,000 rows. (0 errors)
select_points_struct: x100,000@5,000: 0.125 / 0.122Above 32K, there doesn't seem to be much benefit (at least in this config. My colleague on linux64 is consistently faster in benchmarks, even connecting to the same servers, when we have the same exact machine). So 32K may indeed be a threshold of sort.
In all, I hope I've shown there is value in array-binds (or defines), or even simple pre-fetching (but the latter helps in selects only). I don't think one can very often take advantage of it, and I have no clue how it compares to direct-path calls, but value there is still IMHO. --DD

Assigning values to 2 fields using sql statement

db11g , apex 4.0 and firefox 24 ,
hi all ,
i am trying to follow this tutorial to assign values to 2 items on a page using sql statement ,
and i am using the same sql statement the tutorial uses
select d.loc location, count(e.empno) num_employees from dept d, emp e where d.deptno = e.deptno(+) and d.deptno = :P3_DEPTNO group by d.loc -- btw , what does the "+" sign mean?
after the e.deptno in the where condition .
but i am facing this error
1 error has occurred
Wrong number of columns selected in the SQL query. See Help of attribute for details.
and it does not work with two columns in the select statement under any conditions , i tried to remove the group function and the group clause ,
it does not work unless i use only one column in the select statement ??
thanks

Pars
And how exactly is this rewrite of the sql statement resolving the OP's issue.
You are still using more than 1 column which will still result in the error message:
Wrong number of columns selected in the SQL query.
As mentioned in my earlier post APEX 4.0 (the version the OP is using) does not handle a sql statement with multiple columns for the dynamic action Set Value.
Which means the fastest and simplest solution is splitting up the dynamic action in multiple Set Value actions.
Using this plugin or upgrade to a newer apex version would also be a possibility.
Nicolette

Find start and end execution time of a sql statement?

I am have databases with 10.2.0.3 and 9.2.0.8 on HP UNIX 11i and Windows 200x.
I am not in a position to turn on sql tracing in production environment. Yet, I want to find when a sql statement started executing and when it ended. When I look at v$sql, it has information such FIRST_LOAD_TIME, LAST_LOAD_TIME etc. No where it has information last time statement began execution and when it ended execution.. It shows no of executions, elapsed time etc, but they are cumulative. Is there a way to find individual times (time information each time a sql statement was executed. – its start time, its end time ….)? If I were to write my own program how will I do it?
Along the same line, when an AWR snapshot is shown, does it only include statements executed during that snapshot or it can have statements from the past if they have not been flushed from shared memory. If it only has statements executed in the snapshot period, how does it know when statement began execution?

Hi,
For oracle 10g you can use below query to find start and end time, you can see data for last seven days.
select min(to_char(a.sample_time,'DD-MON-YY HH24:MI:SS')) "Start time", max(to_char(a.sample_time,'DD-MON-YY HH24:MI:SS')) "End Time", b.sql_text
from dba_HIST_ACTIVE_SESS_HISTORY a,DBA_HIST_SQLTEXT b where
a.sql_id=b.sql_id
order by 1;
Regards
Jafar

How to dynamically create sql statement for Defaulting Segment Values?

Hi,
Navigation:
1) Descriptive/Segments
2) Query for DFF to be modified
3) Uncheck “Freeze Flexfield Definition”
4) (B) Segments
5) Segments Summary form opens
6) (B) open - Segments form opens
Now, here I want to specify Default type as "SQL Statement" and in the default value field I want to use SQL statement with parameters (to evaluate the default value).
The parameters should be pass at runtime from the form in which we have this DFF. The parameters value should be one of the values which get evaluated at runtime in the form window.
Please suggest how we can achieve this?
Or is there any alternative to achieve this?
Thanks!!
Regards,
Narender
Edited by: Narender Singh on Mar 30, 2010 7:47 AM
Edited by: Narender Singh on Mar 30, 2010 7:48 AM

Jason,
it is possible, though not so simple as with a report.
What you need to do is to create a pipelined function, that returns your date and count data. This pipelined function can be the base of a pseudo-table, which can be used in a select. For the pipelined function you need to define types for one row and a table to define the return-type for your function:
create or replace type calendar_row as object (date_time date, description varchar2(250));
create type calendar_table as table of calendar_row;
Then you can create the package with the function:
================================================
create or replace package dyn_calendar is
procedure set_query(i_query in varchar2);
function view_source return calendar_table pipelined;
end;
create or replace package body dyn_calendar is
v_query varchar2(100) := null;
procedure set_query(i_query in varchar2) is
begin
v_query := i_query;
end;
function view_source return calendar_table pipelined is
TYPE cursor IS REF CURSOR;
c_cal cursor;
v_date_time date := null;
v_description varchar2(100) := null;
r_cal calendar_row;
begin
open c_cal for v_query;
fetch c_cal into v_date_time, v_description;
loop
exit when c_cal%notfound;
r_cal := calendar_row(v_date_time, v_description);
pipe row(r_cal);
fetch c_cal into v_date_time, v_description;
end loop;
return;
end;
end;
================================================
Now you can set query in a PL/SL region before the calendar:
dyn_calendar.set_query(SELECT count(*), ' || :P8_SOURCE_DATE || ' FROM ' || :P8_SOURCE_TABLE || ' GROUP BY ' || :P8_SOURCE_DATE);
and you can base your calendar on the query:
select * from table(dyn_calendar(view_source))
Good luck,
Dik

How to pass the bind variable value to the sql statement of the LOV

Hi,
I am using Forms 10g builder.
I have a text item which will be populated by a LOV when i press a button, but i have a bind variable in the SQL statement of the LOV. That bind variable should be replaced by a value which is derived from a radio group in the same data block.
For Ex: ( )radio1 ( )radio2
before i click on the push button, I'll select one of the radio button above,so my question is how to assign this radio group value to the bind variable in the sql statement in the LOV?
Pl any hint is appreciated!
Thanks
Reddy

The variable can be taken into account in the SELECT order contained in the Record Group used by the LOV.
e.g. Select ... From ... Where column = :block.radio_group ...Francois

How to find what sql statement is currently running by scheduler job?

Hi
I scheduled a stored procedure to run every 5 minutes using dbms_scheduler.
The stored procedure internally call serveral other stored procedures.
The scheduled job is in running state and right now I want to find out what is the sql statement the job executing.
Is there any sql query to find out what is sql query the schedular job is running?? Please help me.
Thanks in Advance.

The previous sql id is null in this case.
I already quoted as I am running a pl/sql block in my scheduler job.
begin
usp_test('praram');
end;
I am using the pl/sql block as above in my scheduler job. The USP_TEST inturn calls some other stored procedures and each stored procedure has several inserts and update statements.
The scheduler job is still running. I know the sid of the running scheduler job.
I want to know the job is at which stored procedure and at which insert/update statement.
Please let me know is there any query to fulfil my requirement?
I greatly appreciate your help
Thanks

How to find SQL Statement fired using SYS.AUD$ - Database Auditing

Dear Friends
I am having Oracle 9i Database and have configured it with database auditing option by setting the following parameter in init.ora file
AUDIT_TRAIL = "DB"
I want to audit SELECT, INSERT , UPDATE and DELETE operations on PRACTICE.EMP table for which I did :
1) Logged in as SYS
2) SQL> AUDIT SELECT, INSERT, UPDATE, DELETE
ON PRACTICE.EMP
BY ACCESS
WHENEVER SUCCESSFUL;
Audit Succedded
Now how should I find out the SQL statement that does the insert, update or delete operation on the EMP table using SYS.AUD$ table
Thanks

Hi,
It's contents can be viewed directly or via the following views:
* DBA_AUDIT_EXISTS
* DBA_AUDIT_OBJECT
* DBA_AUDIT_SESSION
* DBA_AUDIT_STATEMENT
* DBA_AUDIT_TRAIL
* DBA_OBJ_AUDIT_OPTS
* DBA_PRIV_AUDIT_OPTS
* DBA_STMT_AUDIT_OPTS
The audit trail contains a lot of data, but the following are most likely to be of interest:
* Username : Oracle Username.
* Terminal : Machine that the user performed the action from.
* Timestamp : When the action occured.
* Object Owner : The owner of the object that was interacted with.
* Object Name : The name of the object that was interacted with.
* Action Name : The action that occured against the object. (INSERT, UPDATE, DELETE, SELECT, EXECUTE)
So, take a look at action_name column from DBA_AUDIT_TRAIL view.
Cheers
Legatti

Basic SQL statement , Finding Repeated Values

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