Problem in Select Queries

I fired a query as below
select table_name, num_rows from all_tables.
the output didnt showed values in num_rows for many tables. Why it has happened?? When we analyzed the schema, it showed everything??
Kindly answer, why there is such an unusual dispplay and wats the importance of analysis??

Hi, I make an example for you...
sql >> create table x ( id number );
Table created.
sql >> select table_name, num_rows from all_tables
2 where table_name='X';
TABLE_NAME NUM_ROWS
X
sql >> insert into x
2 select object_id from all_objects;
43892 rows created.
sql >> select table_name, num_rows from all_tables
2 where table_name='X';
TABLE_NAME NUM_ROWS
X
sql >> analyze table x compute statistics;
Table analyzed.
sql >> select table_name, num_rows from all_tables
2 where table_name='X';
TABLE_NAME NUM_ROWS
X 43892
If you analyze a table to compute or estimate statistics... then NUM_ROWS will be populated.
I hope this example helps.
Bye!

Similar Messages

Problem with select queries

Dear Friends,
I have written the below select queries to get the shipment details for a given date range.
select vbeln lddat
into table itab
from likp
where lddat in l_r_date2 .
if not it_ldt[] is initial.
 select fknum fkpos rebel
 into table jtab
 from vfkn
 for all entries in itab
 where
 rebel = itab-vbeln.
endif.
First query is giving 82000 entries and second query is giving approx 60000 from the table VFKN( total entries in this table are 8 lakhs).
Here the problem is second select query(for all entries select query) is taking a time of 3 to 4 hours.
So please suggest me how can i reduce the time.
Thanks and Regards

Hi,
Use FREE or PACKAGE size.
Some steps that might make FOR ALL ENTRIES more efficient:
Removing duplicates from the driver table Sorting the driver table
If possible, convert the data in the driver table to ranges so a BETWEEN statement is used instead of and OR statement:
FOR ALL ENTRIES IN i_tab
 WHERE mykey >= i_tab-low and
 mykey <= i_tab-high.
Regards
Krishna

Executing Multiple Select Queries in a Single attempt

HI,
I executed two select queries in a single statement execute. It is executing without any error. Hence there must be two resultset objects within that single statement.
What the problem is that I m able to fetch the first resultset and its data, But I execute stmt.getMoreResults() to move to the next resultset, it returns false, which means there is no more results. I want to know what is the problem ?? (Record exist in the database for both queries)
And How can I rertieve both the resultsets. ??
Plz help me asap.
For ur convenience I m posting the Java code also which I m trying.
sql.delete(0, sql.length());
sql.append("select FIRST_NAME , MIDDLE_NAME , LAST_NAME from USER_MASTER where USER_ID=4;");
sql.append("select producttransaction_id, product_type from product_transaction where transaction_id=102 order by product_type desc");
Statement stmt = con.createStatement();
stmt.execute(sql.toString());
int resultsetcount =1;
ArrayList arrlist = new ArrayList();
rs = stmt.getResultSet();
if(rs !=null)
if(rs.next())
.........// logic here working properly
//Now when I move to next resultset using the below statement
//it returns false indicating that there r no more results.
// Why this is so ?????
boolean moreresultsets = stmt.getMoreResults();
System.out.println("MoreResultsets::"+moreresultsets);
if(moreresultsets)
rs = stmt.getResultSet();
if(rs!=null)
while(rs.next())
//...Logic.......
rs.close();
Thanks

I've never seen this used the way you are using it. In my experience the only way to do this would be to execute a single SQL statement that returns multiple result sets - you are trying to append two SQL statements.
You could define an in-line procedure wrapping your two select statements, or you could define a stored procedure to do the same thing. Then (either way) use CallableStatement to execute the call to the procedure.

Multiple select queries used in Excel BI report ,fetching data from Sharepoint DB(SP2010_Prod_ProjectServer) causing blockage on DB ,when more than one workbook(same copy of Excel BI Report) refreshed using Refresh All option.

I am using mutiple select queries to fetch data from Project Server 2010 DB(its sharepoint DB) and these queries fetch data in Excel BI report by establishing connection with DB using instance name and all. I have enhance all these select queries and data
is being fetched in secs. but when more than one copy of same Excel BI report is refreshed using 'Refresh All' option, then these select queries cause blockage on DB.
Please let me know mitigation for this blockage issue.
Should I use begin transaction and commit transaction statements/ shared lock statements.
please reply

Hi,
run same query at the same time?

Problem with "SELECT...FOR UPDATE OF..." and "POST command" combination

Problem with "SELECT...FOR UPDATE OF..." and "POST command" combination
Problem in committing transactions in Multiple Forms (Oracle Forms) with POST built-in command:
Consider that the following statements are written in WHEN-WINDOW-CLOSED trigger of a called form.
Statements in called form (Form name: FORM_CHILD):
go_block('display_block') ;
do_key('execute_query') ;
-- Data from table_b will be populated in this block, based on the value of COLUMN_1 obtained
-- from TABLE_A.
-- Example: If the value of COLUMN_1 is 10, then all the matching records from TABLE_B, which
-- are inserted with value 10 in TABLE_B.COLUMN_1 will be fetched and shown here.
if user_choice = 'YES' then
commit ;
else
rollback ;
end if ;
Statements in calling forms:
There are two calling forms having following statements and it is going to call the above said called form.
CALLING FORM 1
Statements in KEY-COMMIT trigger:
post;
call_form(form_child, no_activate) ;
Statements in ON-INSERT trigger:
select column_1
from table_a
for update of column_1
where column_2 = 'X' ;
update table_a
set column_1 = column_1 + 1
where column_2 = 'X' ;
insert into table_b ...;
insert into table_b ...; Statements in KEY-COMMIT trigger:
post;
call_form(form_child, no_activate) ;
CALLING FORM 2:
Statements in ON-INSERT trigger:
select column_1
from table_a
for update of column_1
where column_2 = 'X' ;
update table_a
set column_1 = column_1 + 1
where column_2 = 'X' ;
insert into table_b ...;
insert into table_b ...;
insert into table_b ...;
Our understanding:
Assume that both the forms are running from two different machines/instances, issuing commit at the same time. In this case, forms will start executing the statements written in ON-INSERT trigger, the moment POST command is executed. Though the commit is issued at the same time, according to oracle, only one of the request will be taken for processing first. Assume that calling form 1 is getting processed first.
So, it fetches the value available in COLUMN_1 of TABLE_A and locks the row from further select, update, etc. as SELECT...FOR UPDATE command is used (note that NOWAIT is not given, hence the lock will be released only when COMMIT or ROLLBACK happens) and proceed executing further INSERT statements. Because of the lock provided by the SELECT...FOR UPDATE command, the statements in calling form 2 will wait for the resource.
After executing the INSERT statements, the FORM_CHILD is called. The rows inserted in to TABLE_A will be queried and shown. The database changes will be committed when user closes the window (as COMMIT is issued in its WHEN-WINDOW-CLOSED trigger). Then the SELECT...FOR UPDATE lock will be released and calling form 2's statements will be executed.
Actual happenings or Mis-behavior:
Calling form 2 starts executing INSERT statements instead of waiting for SELECT...FOR UPDATE lock. Also, the value selected from TABLE_A.COLUMN_1 is same in both the calling forms, which is wrong.
The rows inserted into TABLE_B are having similar COLUMN_1 values in calling form 2 and they are fetched and shown in the called form FORM_CHILD.
Note that in calling form 2 also POST only is issued, but the changes posted there are accessible in calling form 1 also, which is wrong.
Kindly suggest us as to how to fix above problem. It will be much use, if you can send us the information regarding the behavior of Oracle Forms POST built-in also.
Our mail ID: [email protected]
Thanks a lot in advance.

You have several problems:
1. On-Insert will ONLY run if you have created a new record in a base-table block. If you haven't done that, then the POST command will not cause it to run.
2. Select for update without a "no wait" will lock records for the first form, but when the second form tries this, it will hit the ORA-00054 exception, and will NOT wait. The only way you could make it wait is to issue an UPDATE sql command, which is not such a good way to go.
All POST does is issues SQL insert or update commands for any changes the user has made to records in a form's base-table blocks, without following with a Commit command.
Also understand that Commit is the same as Commit_Form, and Rollback is the same as Clear_Form. You should read up on these in the Forms help topics.

I'm having problems (1)selecting onscreen text, (2) having problems resizing menu boxes and selecting menues with the cursor. I'm not able to select menus and move them. I'm not sure how to correct this.

I'm having problems (1) selecting onscreen text, (2) resizing menu boxes and selecting menues with the cursor. I'm not able to select menus and move them. I'm not sure how to correct this.

1) This is because of software version 1.1. See this
thread for some options as to how to go back to 1.0,
which will correct the problem...
http://discussions.apple.com/thread.jspa?threadID=3754
59&tstart=0
2) This tends to happen after videos. Give the iPod a
minute or two to readjust. It should now be more
accurate.
3) This?
iPod shows a folder icon with exclamation
point
4) Restore the iPod
5) Try these...
iPod Only Shows An Apple Logo and Will Not Start
Up
iPod Only Shows An Apple Logo
I think 3,4, and 5 are related. Try the options I
posted for each one.
btabz
I just noticed that one of the restore methods you posted was to put it into Disk Mode First rather than just use the resstore straight off, I Have tried that and seems to have solved the problem, If it has thank you. previously I have only tried just restoring it skipping this extra step. Hope my iPod stays healthy, if it doesnt its a warrenty job me thinks any way thanks again

Problem with selecting text in Adobe Reader XI

Hi all, I am encountering a problem with Adobe Reader XI and it is very strange I could not find an alike issue on the internet so I guess I have to submit a question with it.
So here it is, I am using Adobe Reader XI Version 11.0.2, operating system: Windows 7. I do not know it starts from when but it has the problem with selecting text - to be copied in pdf documents. I ensure that the documents are not scanned documents but word-based documents (or whatever you call it, sorry I cannot think of a proper name for it).
Normally, you will select the text/paragraph you want to copy and the text/paragraph will be highlighted, but the problem in this case that I cannot select the text/paragraph, the blinking pointer (| <-- blinking pointer) will just stays at the same location so I cannot select/highlight anything to be copied. It happens oftenly, not all the time but 90%.
This is very annoying as my work involves very much with copying text from pdf documents, I have to close the pdf file and then open it again so I can select the text but then after the first copying or second (if I am lucky), the problem happens again. For a few text I have to type it myself, for a paragraph I have to close all opening pdf documents and open again so I could select the paragraph to copy. I ran out of my patience for this, it causes trouble and extra time for me just to copying those texts from pdf documents. Does this problem happen to anyone and do you have a solution for this? I would much appreciate if you could help me out, thank you!

Yeah, I totally agree, this is very strange. I have always been using Adobe Reader but this problem only occurred ~three months ago. It must be that some software newly installed I think. But I have no idea.
About your additional question, after selecting the texts and Ctrl + C, the texts are copied and nothing strange happens. It's just that right after I managed to copy the texts, it takes me a while to be able to select the texts again. For your information, I just tested to select the texts and then pressed Ctrl, the problem happened. And then I tried pressing C and then others letters, it all led to the problem.
I guess I have to stick with left-clicked + Copy until I/someone figure the source of this problem. Thanks a lot for your help!

Problem with: select 'c' as X from dual

Problem with 'select 'c' as X from dual'
I get 2 different results when I execute the above with SQLPlus (or java) depending on the instance I am connected to. For one instance the result is a single character and for the other the character is padded with blanks to 32 chars in the SQLPlus window (and java). Does anyone know what database setting causes this to happen? Is it a version issue ?
Test #1: Oracle 9.2.0.6 - SQLPlus result is padded with blanks
SQL*Plus: Release 9.2.0.1.0 - Production on Mon Dec 10 09:27:58 2007
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.6.0 - 64bit Production
With the Partitioning option
JServer Release 9.2.0.6.0 - Production
SQL> select 'c' as X from dual;
X
c
SQL>
Test #2 Oracle 9.2.0.1 SQLPlus result is a single character.
SQL*Plus: Release 9.2.0.1.0 - Production on Mon Dec 10 09:29:27 2007
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.1.0 - Production
SQL> select 'c' as X from dual;
X
c
SQL>

Using 9.2.0.6 On AIX 5.2 I get the single byte result:
UT1 > select 'c' as X from dual;
X
c
If the databases are on different Oracle Homes you may want to check the sqlplus global logon files for any set commands.
If you executed the two sql statements from different OS directories you may also want to check your sqlpath for sqlplus .logon files.
Try issueing clear columns and repeating the statement. Are the results the same?
HTH -- Mark D Powell --

Multiple select queries for JDBC sender

I am working on JDBc to IDOC scenario.
I need to process two select queries in PI where output of 1st query becomes the input of second.
Now i need to map the output of second to IDOC through XSL mapping also i need to use BPM to process(without using the stored procedure) the scenario.
In my JDBC communication channel i have option for only one select query and second query should fetch the data through BPM.
In BPM i have used the following sequence mentioned below:
Start --> Receive step ( receives all the header lines) --> Transformation (to split the header messages to single message) --> Block Start( To processEachRecord) --> Send Syn (to map the request message i,e. output of first query with Response i,e. structure of the second query) --> Send Asyn (to send the output of second query to XSLT mapping) -->Block End --> stop
Output of XSLT mapping is the input for IDOC
Now i need to understand how to process the second query?

>> I need to process two select queries in PI where output of 1st query becomes the input of second
Use SQL Nested Queries.
Example:
SELECT Model FROM Product WHERE ManufacturerID IN (SELECT ManufacturerID FROM Manufacturer
WHERE Manufacturer = 'Dell')
Here first table is Manufacturer .. we do select query in manufacturer to return data and pass it to the first table Product.
>> Now i need to understand how to process the second query?
You dont need at all. In your sender jdbc channel, write sql statement nested query and you will get only output of the second table. you map the second table output to the idoc.
Note: Dont know why do you need BPM for this case..
Jdbc sender adapter help links
http://help.sap.com/saphelp_srm40/helpdata/en/7e/5df96381ec72468a00815dd80f8b63/content.htm
Check this thread for update statement in jdbc cc
Re: sender jdbc adapter

Problem in Selection Screen.

Dear Experts,
I am facing a problem in Selection Screen.
I have 2 radio buttons ,
Radio Button 1 - Choosing the file from desktop and
Radio Button 2 - Executing from Database
Under Option1 - i have a FILE parameter which is Mandatory.
Problem Case -
when I choose option 2, Option 1 should be disabled. in the sense the file name which is mandatory here should not be mandatory . Currently, when i choose option 2 - i have to provide some dummy characters in the file parameter because the file parameter is mandatory, and I want to avoid this.
Please see the entire code .
REPORT ZTEST.
DATA: LV_FILE_PATH(20) TYPE C.
DATA: LV_MASK(20) TYPE C VALUE ',*.XLS ,*.XLS. '.
*-- Macro to put radiobutton on selection screen
*-- &1 - radiobutton parameter name
*-- &2 - text element (description)
*-- &3 - radiobutton group
DEFINE MAKE_RADIOBUTTON.
SELECTION-SCREEN BEGIN OF LINE.
PARAMETERS: &1 RADIOBUTTON GROUP &3.
SELECTION-SCREEN COMMENT 3(60) &2.
SELECTION-SCREEN END OF LINE.
END-OF-DEFINITION.
SELECTION-SCREEN BEGIN OF BLOCK A0 WITH FRAME TITLE T000.
* From Config File
MAKE_RADIOBUTTON RB_1 ALL_DATA SRC.
SELECTION-SCREEN BEGIN OF BLOCK A1 WITH FRAME TITLE T001.
* Config file from Presentation server
PARAMETERS: P_FILE1 LIKE T390D-DBNAME OBLIGATORY. "
SELECTION-SCREEN END OF BLOCK A1.
* From database table
MAKE_RADIOBUTTON RB_2 INC_DOWN SRC.
SELECTION-SCREEN END OF BLOCK A0.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR P_FILE1.
CALL FUNCTION 'WS_QUERY'
 EXPORTING
 QUERY = 'CD' "// Current Directory
 IMPORTING
 RETURN = LV_FILE_PATH.
CALL FUNCTION 'WS_FILENAME_GET'
 EXPORTING
 DEF_FILENAME = 'TA_DOWNLOAD.MDB'
 DEF_PATH = LV_FILE_PATH
 MASK = LV_MASK
 MODE = 'O'
 IMPORTING
 FILENAME = P_FILE1
 EXCEPTIONS
 INV_WINSYS = 1
 NO_BATCH = 2
 SELECTION_CANCEL = 3
 SELECTION_ERROR = 4
 OTHERS = 5.
INITIALIZATION.
ALL_DATA = 'From Desktop : ? '.
INC_DOWN = 'From Database : ?'.
T000 = 'Configuration Upload'.
Please help
Thanks

Hi
You should do some modifications like these:
DEFINE MAKE_RADIOBUTTON_1.
SELECTION-SCREEN BEGIN OF LINE.
PARAMETERS: &1 RADIOBUTTON GROUP &3 USER-COMMAND &4.
SELECTION-SCREEN COMMENT 3(60) &2.
SELECTION-SCREEN END OF LINE.
END-OF-DEFINITION.
DEFINE MAKE_RADIOBUTTON_2.
SELECTION-SCREEN BEGIN OF LINE.
PARAMETERS: &1 RADIOBUTTON GROUP &3.
SELECTION-SCREEN COMMENT 3(60) &2.
SELECTION-SCREEN END OF LINE.
END-OF-DEFINITION.
SELECTION-SCREEN BEGIN OF BLOCK A0 WITH FRAME TITLE T000.
From Config File
MAKE_RADIOBUTTON_1 RB_1 ALL_DATA SRC AAA.
SELECTION-SCREEN BEGIN OF BLOCK A1 WITH FRAME TITLE T001.
Config file from Presentation server
PARAMETERS: P_FILE1 LIKE T390D-DBNAME MODIF ID FIL. "
SELECTION-SCREEN END OF BLOCK A1.
From database table
MAKE_RADIOBUTTON_2 RB_2 INC_DOWN SRC.
SELECTION-SCREEN END OF BLOCK A0.
AT SELECTION-SCREEN OUTPUT.
IF RB_2 = 'X'.
 LOOP AT SCREEN.
 IF SCREEN-GROUP1 = 'FIL'.
 SCREEN-ACTIVE = 0.
 MODIFY SCREEN.
 ENDIF.
 ENDLOOP.
ENDIF.
Max

Performance problem with selecting records from BSEG and KONV

Hi,
I am having performance problem while selecting records from BSEG and KONV table. As these two tables have large amount of data , they are taking lot of time . Can anyone help me in improving the performance . Thanks in advance .
Regards,
Prashant

Hi,
Some steps to improve performance
SOME STEPS USED TO IMPROVE UR PERFORMANCE:
1. Avoid using SELECT...ENDSELECT... construct and use SELECT ... INTO TABLE.
2. Use WHERE clause in your SELECT statement to restrict the volume of data retrieved.
3. Design your Query to Use as much index fields as possible from left to right in your WHERE statement
4. Use FOR ALL ENTRIES in your SELECT statement to retrieve the matching records at one shot.
5. Avoid using nested SELECT statement SELECT within LOOPs.
6. Avoid using INTO CORRESPONDING FIELDS OF TABLE. Instead use INTO TABLE.
7. Avoid using SELECT * and Select only the required fields from the table.
8. Avoid nested loops when working with large internal tables.
9. Use assign instead of into in LOOPs for table types with large work areas
10. When in doubt call transaction SE30 and use the examples and check your code
11. Whenever using READ TABLE use BINARY SEARCH addition to speed up the search. Be sure to sort the internal table before binary search. This is a general thumb rule but typically if you are sure that the data in internal table is less than 200 entries you need not do SORT and use BINARY SEARCH since this is an overhead in performance.
12. Use "CHECK" instead of IF/ENDIF whenever possible.
13. Use "CASE" instead of IF/ENDIF whenever possible.
14. Use "MOVE" with individual variable/field moves instead of "MOVE-
CORRESPONDING" creates more coding but is more effcient.

JDBC Sender Selects Queries

I know that the JDBC sender adapter can handle joins, but can it handle more sophisticated SELECT queries such as subselects, group by, rownum, etc. In other words, are there any limitations in the SELECT query?
Thanks in advance.

Hi Bevan,
The only limitation with XI30-JDBC Sender Adapter is with Oracle Stored Procedure/Functions, as Oracle SP Query returns a cursor, and not a resultset.
Thanks
Prasad

A problem highlighting/selecting text in Illustrator CS3

In several instances I can't highlight text to copy or to edit, other times it works fine. If I click the radio button for the text in layers (other layers may be locked to prevent accidental selection), the baselines appears and I should be able to highlight the text, but I can't. If I highlight some other unaffected area of text successfully (unlocked layers), sometimes it will allow me to select the problem text directly after. Then it will go back to being a problem, why?

I'm using the general text tool, I've locked the other sublayers to avoid accidentally selecting those items. Then I click the radio button on the sublayer I wish to edit or copy, which reveals the baselines. Then if I click within that object to highlight text with the cursor, the text tool creates a new textbox/sublayer and does not highlight the text I intended.
From: Monika Gause <[email protected]<mailto:[email protected]>>
Reply-To: <[email protected]<mailto:[email protected]>>
Date: Wed, 26 Oct 2011 14:49:40 -0600
To: Roger Daleiden <[email protected]<mailto:[email protected]>>
Subject: A problem highlighting/selecting text in Illustrator CS3
Re: A problem highlighting/selecting text in Illustrator CS3
created by Monika Gause<http://forums.adobe.com/people/Monika+Gause> in Illustrator - View the full discussion<http://forums.adobe.com/message/3992086#3992086

Problem with Select

Hi All,
I am Facing one problem in select query. My requirement is as follows.
User Screen will Have 4 Fileds.
Country Code, Zip Code From, Zip Code To, Delivery Area.
All are Parameter's only.
For Example ZTABLE having below Entries.
US 12345-6787 12345-6789   AKRON             AKRON/CANTON
Once User try to create new entry by Click on SAVE, Below Possiblities are there.
Case 1: US 12345-6787 12345-6789   AKRON             AKRON/CANTON ( Error Message)
Case 2: US 12345-6786 12345-6787   AKRON             AKRON/CANTON ( Error Message)
Case 3: US 12345-6789 12345-6790   AKRON             AKRON/CANTON ( Error Message)
Case 4: US 12345-6789 12345-6790   AKRON             AKRON/CANTON ( Error Message)
Case 5: US 12345-6786 12345-6787   AKRON             AKRON/CANTON ( Error Message)
Case 6: US 12345-6785 12345-6786   AKRON             AKRON/CANTON ( Record Need To Insert)
Case 7: US 12345-6785 12345-6785   AKRON             AKRON/CANTON ( Record Need To Insert)
Case 8: US 12345-6790 12345-6790   AKRON             AKRON/CANTON ( Record Need To Insert)
Case 9: US 12345-6790 12345-6791   AKRON             AKRON/CANTON ( Record Need To Insert)
Case 10: US 12345-6788 12345-6788   AKRON             AKRON/CANTON ( Error Message)(This Condition is Failing)
Case 11: US 12345-6788 12345-6789   AKRON             AKRON/CANTON ( Error Message)(This Condition is Failing)
In the above cases 10 and 11 is failing.
I am using the below select statment.
SELECT SINGLE * FROM zdt_sd_dlv_zcode   WHERE mandt = sy-mandt
                                          AND land1 = g_land1
                                          AND ( post_code_from GE g_pbox_from AND post_code_from LE g_pbox_to )
                                          OR ( post_code_to GE g_pbox_from AND post_code_to LE g_pbox_to ).
Friends can anyone give me some valuable inputs to solve this problem.
Points will reward.
Thanks in Advance,
Srinivas.

Please use Select-options instead of Parameters so that you can use complex "and" and "or" in your select statements.
for eg:if you are declaring parameters like this below.
parameters post_code1 LIKE adrc-post_code1.
change to
select-options post_code1 for adrc-post_code1 no intervals.
siddu

Select queries

Hi All,
I have a program to be performance tuned. There are select queries on VBAP and BSEG which are taking time.
The where condition includes maximum primary keys. But when I checked the data its fetching is very large.
I have performance tuned another code and replaced the selects with FMs but now for VBAP and BSEG I am not
getting suitable FMs . Also some which I got are taking more time then the selects.
Kindly suggest something.
Thanks
Moderator message - Please see Please Read before Posting in the Performance and Tuning Forum before posting - post locked
Edited by: Rob Burbank on Mar 18, 2010 3:07 PM

Hi,
If you are giving All the fields of the table in the Second Query and trying to use CORRESPONDING FIELDS then second query will take more time, since here FILED names will be compared which is an extra operation if you use * instead it will just to BYTE copy which is faster.
If you are giving only some fields of the table in the Second query then second query takes less time than First query.
This is beacuse the amount of data that is transferred from Database server to Application server will be less in the second case if all fields of the table are not mentioned.
Regards,
Sesh

Problem in Select Queries

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