Execution of query without authentication

Hello everyone,
I need to know how to provide to my client the following scenario.
They want to enter the web, execute a query but without the authentication, and then make filters over it.
The obvious answer is to use Broadcast but they donu2019t want to use this tool.
Can anyone help me?
Thank you,
Joana

Hi everyone,
Mohan,
The Portal is not installed and the client doesn´t want to use SAP.
The client as a lot of companies that donu2019t have SAP installed and he would like to make available, for the employees, a few BW queries. But he doesnu2019t want to install Broadcast and don't want to have the trouble of executing the queries, and send them by e-mail, either.
Joerg,
What do you mean by u201Csimulate the Broadcaster and install the Broadcaster Programsu201D?
Do you have any documentation that my help me?
All help would be much appreciated.
Thank you,
Joana

Similar Messages

Oracle 10g Diff in execution plan query with binding var Vs without

We recently did 10g upgrade. In 10g, execution plan differs for query with binding var(thru jdbc etc) Vs without it as given below. For query with binding var,
it chooses poor execution plan(no index is used, full scan is done etc). everything worked fine in 9i. To rectify the problem, we have to hint query with right index,join etc. but i dont like this solution.
I would rather prefer to correct database to choose right execution path instead of eacy query level. but not sure what causes the issue.
Does anybody came across this issue? if so, Please share your experiences. Thanks for the help. Do let me know if you need more info.
1. Query without binding bar:
select * from test where col1 = :1 and col2 = :2
1. Query without binding bar:
select * from test where col1 = 'foo' and col2= 'bar'

I am not an expert but in my humble opinion it is the developer's responsability to ensure the correct explain plan is used before deploying code to production, if the explain plan returned by the DB is bad, then the use of a hint is perfectly acceptable.
Check this out: http://lcgapp.cern.ch/project/CondDB/snapshot/performance.html
Excerpt:
Bind variable peeking. If an SQL query contains bind variables, the optimal execution plan may depend on the values of those variables. When the Oracle query optimizer chooses the execution plan for such a query, it may indeed look at the values of all bind variables involved: this is known as "bind variable peeking".
In summary, the execution plan used for a given SQL query cannot be predicted a priori because it depends on the presence and quality of statistics and on the values of bind variables used at the time the query was first executed (hard-parsed). As a consequence of this instability of execution plans, very different performances may be observed for the same SQL query. In COOL, this issue is addressed by adding Oracle hints to the queries, to make sure that the same (good) plan is used in all cases, even with unreliable statistics or unfavourable bind variables.
Edited by: Rodolfo Ferrari on Jun 3, 2009 9:40 PM

Retrieve data partially without re-execution of query

I am using Visual Basic.NET for programming.
Database is Oracle 9i Enterprise Edition Release 9.0.1.1.1
Platform is Windows XP Professional.
I am going to execute an Oracle Query (or Stored Procedure) from my VB.NET environment.
This query returns 1,000,000 records and takes lots of time to be executed.
I found a way in .NET to fill DataSet with specific number of records. For Example I can show 100 records from position 10 to position 110 by this code:
MyDataAdapter.Fill (MyDataset, 10, 100,"TEST")
But my problem happens when I want to show 100 records from position 900,000 to position 900,100 by this code:
MyDataAdapter.Fill (MyDataset, 900000, 100,"TEST")
This line takes lots of times to be executed.
I think each time I run the above line in VB.NET, the query executes once again. And this is not what I expect.
Besides I used Microsoft.NET Oracle Client too, but still have problem.
Would you please kindly help me to find a way to retrieve data partially without re-execution of query?
Thanks for co-operation in advance.

I am using Visual Basic.NET for programming.
Database is Oracle 9i Enterprise Edition Release 9.0.1.1.1
Platform is Windows XP Professional.
I am going to execute an Oracle Query (or Stored Procedure) from my VB.NET environment.
This query returns 1,000,000 records and takes lots of time to be executed.
I found a way in .NET to fill DataSet with specific number of records. For Example I can show 100 records from position 10 to position 110 by this code:
MyDataAdapter.Fill (MyDataset, 10, 100,"TEST")
But my problem happens when I want to show 100 records from position 900,000 to position 900,100 by this code:
MyDataAdapter.Fill (MyDataset, 900000, 100,"TEST")
This line takes lots of times to be executed.
I think each time I run the above line in VB.NET, the query executes once again. And this is not what I expect.
Besides I used Microsoft.NET Oracle Client too, but still have problem.
Would you please kindly help me to find a way to retrieve data partially without re-execution of query?
Thanks for co-operation in advance.

Security Athorization without authentication - wiill this work? Attn Frank

Hi Frank:
Fun never stops and never know what is coming.
Just when I have my nice tables set up for authentication and authorization,
now I hear that I have to test a scenario where authentication is going to be provided by an external utilty (An LDAP Server behind which PeopleSoft tables have username/pw) info. My questions are:
(1) Is it possible to turn off authentication via J2EE Container but keep Authorization on? I want the ability to use page related security roles! And, yes, there will be a table with usernames and roles as well (which is working).
Change: However, the table with usernames and passwords will be in a PeopleSoft table behind LDAP. (The authentication does work with a few tweaks in web.xml. So, can't complaint there)
(2) Is there a better solution (given the external authentication utility is a given)?
(3) Is there a way to fool JAAS to say, ok don't show the login screen but you are authorized? I now wonder what the DBTableLoginModule do? Can we tell it, "forget authentication, just get the roles?"
I really don't want to lose the authorization provided by JAAS and, not to mention, permissions (which I have not gotten to work but more about that on another post).
Thanks

Hi,
1) as said, nothing prevents you from building a JAAS LoginModule that does what you need - e.g. authenticate a user against LDAP, then connect to the database and query for his/her user roles. You can't have container managed authorization without authentication though.
There will be a change in API in JDeveloper 11 (and most likely in JDeveloper 10.1.3.4 - upcoming) that allows you to set a Subject into the OC4J context, in which case you don't need container managed autehntication. However, I don't have it tested yet and can't tell to what extend this would be useful
3) Sure, you can build a JAAS LoginModule that doesn't care for authentication. However, this doesn't work with container managed security. As far as I am aware, the only option to not show a login dialog is to use certificates. And certificates are not yet to use with custom LoginModules. So the above mentioned API - that is available as a backported patch for 10.1.3.1 - might do the trick
Frank

CPU Cost of a Query without executing it?

Is there any mathematical formula to find CPU cost of a query without executing it? Thanks

902181 wrote:
Is there any mathematical formula to find CPU cost of a query without executing it? ThanksAny why do you want the cost? What do you expect it to tell you? How are you planning to apply this in your code? Make sure you understand what cost tells you and what it does not tell you. And use that value in a sane fashion.
As for an alternative to using EXPLAIN PLAN, you can simply parse a SQL into a cursor without executing it. Then determine the SQL cursor id and address and use DBMS_XPLAN to display its execution plan.
E.g.
SQL> create or replace procedure ParseSQL( sqlStatement varchar2 ) is
2          c       integer;
3 begin
4          c := DBMS_SQL.open_cursor;
5
6          DBMS_SQL.parse(
7                  c,
8                  sqlStatement,
9                  DBMS_SQL.native
10          );
11
12          DBMS_SQL.close_cursor( c );
13 end;
14 /
Procedure created.
SQL>
SQL> var sqlID varchar2(100)
SQL> var childNumber number
SQL> var sqlText varchar2(4000)
SQL> begin
2          ParseSQL( 'select /* TEST1 */ * from emp' );
3
4          select
5                  sql_text, sql_id, child_number into :sqlText, :sqlID, :childNumber
6          from    v$sql
7          where   sql_text like 'select /* TEST1 */%';
8 end;
9 /
PL/SQL procedure successfully completed.
SQL>
SQL> col PLAN_TABLE_OUTPUT format a50
SQL> select
2          rownum, p.plan_table_output
3 from       TABLE( DBMS_XPLAN.Display_Cursor( :sqlID, :childNumber, 'BASIC,COST' ) ) p;
    ROWNUM PLAN_TABLE_OUTPUT
         1 EXPLAINED SQL STATEMENT:
         2 ------------------------
         3 select /* TEST1 */ * from emp
         4
         5 Plan hash value: 3956160932
         6
         7 -----------------------------------------------
         8 | Id | Operation         | Name | Cost (%CPU)|
         9 -----------------------------------------------
        10 |   0 | SELECT STATEMENT |      |     3 (100)|
        11 |   1 | TABLE ACCESS FULL| EMP |     3   (0)|
        12 -----------------------------------------------
        13
13 rows selected.
SQL> The problem is extracting intelligence from the output as it is raw text. Perhaps not that complex as a where clause can be added to only display line id 0 and then extract the cost value from that line. Regular expressions (not my forte) will likely do this easily.

Authorization without authentication

Hello,
From Java code, is there a way to query the users/groups in Weblogic LDAP without requiring a password? I'm using a Java application with Weblogic 12.1.2 configured to point to an external LDAP server. From a java client, I would like to use the Windows username and query against LDAP to see which groups the user is in. It seems like this is possible using SessionContext.getCallerPrincipal() but I always get 'Anonymous', I believe because the user has not been authenticated. Is there a way to get LDAP user/group information using Java from the Weblogic server without having an authenticated user?
Thanks for any information!

Hi,
Thanks for confirming.
Sounds like you would need to speak to your LDAP / AD admin to set up an user with no authentication ( no credentials ) required . If the're happy to set up that up . problem solved.
Makes me wonder , what is it you are trying to do ? i,e why would you need to query AD without authentication and check / pull details of users. ? Even if the AD admin agrees to set one up. that's a security risk.
In additon you are intending to use that user from within the Java application. Boy ! I'm sure it'll raise quite a lot of heads if thats for an commerical project work .
Sri

Creating/Mapping security roles without authentication

Hello all, I am new to WebLogic 9.1, and I appreciate your help in advance.
I have an HTTP header pre-populated with the roles a logged-in user has (these roles are defined outside websphere), and the user has already been authenticated.
I want to map each role from my header to a URI configured in weblogic, so it can authorize/deny access to that page within the container, based on the role in the header.
What would be a good approach to doing this? I have been looking through the security documentation, and I am a bit overwhelmed, I'm not sure where to begin.
Thanks

Hi,
1) as said, nothing prevents you from building a JAAS LoginModule that does what you need - e.g. authenticate a user against LDAP, then connect to the database and query for his/her user roles. You can't have container managed authorization without authentication though.
There will be a change in API in JDeveloper 11 (and most likely in JDeveloper 10.1.3.4 - upcoming) that allows you to set a Subject into the OC4J context, in which case you don't need container managed autehntication. However, I don't have it tested yet and can't tell to what extend this would be useful
3) Sure, you can build a JAAS LoginModule that doesn't care for authentication. However, this doesn't work with container managed security. As far as I am aware, the only option to not show a login dialog is to use certificates. And certificates are not yet to use with custom LoginModules. So the above mentioned API - that is available as a backported patch for 10.1.3.1 - might do the trick
Frank

How to write a SQL Query without using group by clause

Hi,
Can anyone help me to find out if there is a approach to build a SQL Query without using group by clause.
Please site an example if is it so,
Regards

I hope this example could illuminate danepc on is problem.
CREATE or replace TYPE MY_ARRAY AS TABLE OF INTEGER
CREATE OR REPLACE FUNCTION GET_ARR return my_array
as
     arr my_array;
begin
     arr := my_array();
     for i in 1..10 loop
          arr.extend;
          arr(i) := i mod 7;
     end loop;
     return arr;
end;
select column_value
from table(get_arr)
order by column_value;
select column_value,count(*) occurences
from table(get_arr)
group by column_value
order by column_value;And the output should be something like this:
SQL> CREATE or replace TYPE MY_ARRAY AS TABLE OF INTEGER
2 /
Tipo creato.
SQL>
SQL> CREATE OR REPLACE FUNCTION GET_ARR return my_array
2 as
3   arr my_array;
4 begin
5   arr := my_array();
6   for i in 1..10 loop
7    arr.extend;
8    arr(i) := i mod 7;
9   end loop;
10   return arr;
11 end;
12 /
Funzione creata.
SQL>
SQL>
SQL> select column_value
2 from table(get_arr)
3 order by column_value;
COLUMN_VALUE
           0
           1
           1
           2
           2
           3
           3
           4
           5
           6
Selezionate 10 righe.
SQL>
SQL> select column_value,count(*) occurences
2 from table(get_arr)
3 group by column_value
4 order by column_value;
COLUMN_VALUE OCCURENCES
           0          1
           1          2
           2          2
           3          2
           4          1
           5          1
           6          1
Selezionate 7 righe.
SQL> Bye Alessandro

Macbook Pro won't let me move files to HD without authentication. Also when I try to move files from the HD to the desk it just copies them.

My 2013 Macbook Pro running Mavericks 10.9.5 won't let me move files to the HD without authentication. So I have to keep putting my password in. Also when I try to move files from the HD to the desk it just copies them. This just suddenly happened last night. Anyone have any ideas what it could be? Thanks

See http://support.apple.com/kb/HT1229?viewlocale=en_US - I doubt that it will solve your problem, though. You may want to post on the iPhoto forum - that's where all of the iPhoto experts hang out.
Good luck,
Clinton

Needs help to retrive the last row in a select query without using rownum

Hi ,
i need to retrive the last row from the select sub query without using rownum.
is there any other way to retrive the last row other than the below query.
is that the ROWNUM=1 will always retrive the 1 row of the select query ?
select from*
*(select ename from employee where dept_id=5 order by desc) where rownum=1;*
Please advise.
thanks for your help advance,
regards,
Senthur

957595 wrote:
Actually my problem is ithat while selecting the parents hiearchy of the child data using
CONNECT BY PRIOIR query
I need the immediate parent of my child data.
For example my connect BY query returns
AAA --- ROOT
BBB --PARENT -2
CCC --PARENT-1
DDD IS my input child to the connect by query
Immediate parent of my child data "DDD" ---> CCC(parent -1)
i want the data "CCC" from the select query,for that i am taking the last row of the query with rownum.
I got to hear that using ROWNUM to retrive the data will leads to some problem.It is a like a magic number.I am not sure what the problem will be.
So confusing with using this rownum in my query.
Please advice!!!It's not quite clear what you're wanting, but perhaps this may help?
you can select the PRIOR values to get the parent details if you want...
SQL> ed
Wrote file afiedt.buf
1 select empno, lpad(' ',(level-1)*2,' ')||ename as ename, prior empno as mgr
2 from emp
3 connect by mgr = prior empno
4* start with mgr is null
SQL> /
     EMPNO ENAME                                 MGR
      7839 KING
      7566   JONES                              7839
      7788     SCOTT                            7566
      7876       ADAMS                          7788
      7902     FORD                             7566
      7369       SMITH                          7902
      7698   BLAKE                              7839
      7499     ALLEN                            7698
      7521     WARD                             7698
      7654     MARTIN                           7698
      7844     TURNER                           7698
      7900     JAMES                            7698
      7782   CLARK                              7839
      7934     MILLER                           7782
14 rows selected.(ok, not the best of examples as the mgr is already known for a row, but it demonstrates you can select prior data)

How to send an email without authentication

when I use javamail to send an email ,give authentication information seems
a must ,but I need to send it without authentication.Any method that can
implement it?

you can set null for authenticator object.......
look code below, it works......
Properties prop = new Properties()
Session ses = Session.getDefaultInstance(prop,null);

Direct Execution of query having Unicode Characters

Direct Execution of query having Unicode Characters
Hi All,
In my application I am firing a Select Query having Unicode characters in Where Clause under condition like '%%'
to Oracle 10g DB from a Interface written in VC6.0...
Application funcationality is working fine for ANSI characters and getting the result of Select properly.
But in case of Unicode Characters in VC it says 'No Data Found'.
I know where the exact problem is in my code. But not getting the exact solution for resolving my issue...
Here with I am adding my code snippet with the comments of what i understand and what i want to understand...
DBPROCESS Structure used in the functions,_
typedef struct
HENV hEnv;
HDBC hDbc;
HSTMT hStmt;
char CmdBuff[[8192]];
char RpcParamName[[255]];
SQLINTEGER SpRetVal;
SQLINTEGER ColIndPtr[[255]];
SQLINTEGER ParamIndPtr[[255]];
SQLPOINTER pOutputParam;
SQLUSMALLINT CurrentParamNo;
SQLUSMALLINT OutputParamNo;
SQLUSMALLINT InputParamCtr;
SQLINTEGER BatchStmtNo;
SQLINTEGER CmdBuffLen;
short CurrentStmtType;
SQLRETURN LastStmtRetcode;
SQLCHAR SqlState[[10]];
int ShowDebug;
SQLCHAR* ParameterValuePtr;
int ColumnSize;
DBTYPE DatabaseType;
DRVTYPE OdbcDriverType;
BLOCKBIND *ptrBlockBind;
} DBPROCESS;
BOOL CDynamicPickList::GetResultSet(DBPROCESS *pDBProc, bstrt& pQuery, short pNumOdbcBindParams, COdbcBindParameter pOdbcBindParams[], CQueryResultSet& pQueryResultSet)
     int               lRetVal,
                    lNumRows;
     bstrt               lResultSet;
     wchar_t               lColName[[256]];
     SQLUINTEGER          lColSize;
     SQLSMALLINT          lColNameLen,
                    lColDataType,
                    lColNullable,
                    lColDecDigits,
                    lNumResultCols;
     wchar_t               lResultRow[[32]][[256]];
OdbcCmdW(pDBProc, (wchar_t *)pQuery); *//Query is perfectly fine till this point all the Unicode Characters are preserved...*
     if ( OdbcSqlExec(pDBProc) != SUCCEED )
          LogAppError(L"Error In Executing Query %s", (wchar_t *)pQuery);
          return FALSE;
Function OdbcCmdW_
//From this point have no idea what is exactly happening to the Unicode Characters...
//Actually i have try printing the query that gets stored in CmdBuff... it show junk for Unicode Characters...
//CmdBuff is the Char type Variable and hence must be showing junk for Unicode data
//I have also try printing the HexaDecimal of the query... I m not getting the proper output... But till i Understand, I think the HexaDecimal Value is perfect & preserved
//After the execution of this function the call goes to OdbcSqlExec where actual execution of qurey takes place on DB
SQLRETURN OdbcCmdW( DBPROCESS p_ptr_dbproc, WCHAR      p_sql_command )
     char *p_sql_commandMBCS;
     int l_ret_val;
     int l_size = wcslen(p_sql_command);
     int l_org_length,
l_newcmd_length;
p_sql_commandMBCS = (char *)calloc(sizeof(char) * MAX_CMD_BUFF,1);
l_ret_val = WideCharToMultiByte(
                    CP_UTF8,
                    NULL,                         // performance and mapping flags
                    p_sql_command,          // wide-character string
                    -1,                         // number of chars in string
                    (LPSTR)p_sql_commandMBCS,// buffer for new string
                    MAX_CMD_BUFF,                    // size of buffer
                    NULL, // default for unmappable chars
                    NULL // set when default char used
l_org_length = p_ptr_dbproc->CmdBuffLen;
l_newcmd_length = strlen(p_sql_commandMBCS);
p_ptr_dbproc->CmdBuff[[l_org_length]] = '\0';
if( l_org_length )
l_org_length++;
if( (l_org_length + l_newcmd_length) >= MAX_CMD_BUFF )
if( l_org_length == 0 )
OdbcReuseStmtHandle( p_ptr_dbproc );
else
strcat(p_ptr_dbproc->CmdBuff, " ");
     l_org_length +=2;
strcat(p_ptr_dbproc->CmdBuff, p_sql_commandMBCS);
p_ptr_dbproc->CmdBuffLen = l_org_length + l_newcmd_length;
if (p_sql_commandMBCS != NULL)
     free(p_sql_commandMBCS);
return( SUCCEED );
Function OdbcSqlExec_
//SQLExecDirect Requires data of Unsigned Char type. Thus the above process is valid...
//But i am not getting what is the exact problem...
SQLRETURN OdbcSqlExec( DBPROCESS *p_ptr_dbproc )
SQLRETURN l_ret_val;
SQLINTEGER l_db_error_code=0;
     int     i,l_occur = 1;
     char     *token_list[[50]][[2]] =
{     /*"to_date(","convert(datetime,",
                                   "'yyyy-mm-dd hh24:mi:ss'","1",*/
                                   "nvl","isnull" ,
                                   "to_number(","convert(int,",
                                   /*"to_char(","convert(char,",*/
                                   /*"'yyyymmdd'","112",
                                   "'hh24miss'","108",*/
                                   "sysdate",     "getdate()",
                                   "format_date", "dbo.format_date",
                                   "format_amount", "dbo.format_amount",
                                   "to_char","dbo.to_char",
                                   "to_date", "dbo.to_date",
                                   "unique","distinct",
                                   "\0","\0"};
char          *l_qry_lwr;
l_qry_lwr = (char *)calloc(sizeof(char) * (MAX_CMD_BUFF), 1);
l_ret_val = SQLExecDirect( p_ptr_dbproc->hStmt,
(SQLCHAR *)p_ptr_dbproc->CmdBuff,
SQL_NTS );
switch( l_ret_val )
case SQL_SUCCESS :
case SQL_NO_DATA :
ClearCmdBuff( p_ptr_dbproc );
p_ptr_dbproc->LastStmtRetcode = l_ret_val;
if (l_qry_lwr != NULL)
     free(l_qry_lwr);
return( SUCCEED );
case SQL_NEED_DATA :
case SQL_ERROR :
case SQL_SUCCESS_WITH_INFO :
case SQL_STILL_EXECUTING :
case SQL_INVALID_HANDLE :
I do not see much issue in the code... The process flow is quite valid...
But now i am not getting whether,
1) storing the string in CmdBuff is creating issue
2) SQLExecDirect si creating an issue(and some other function can be used here)...
3) Odbc Driver creating an issue and want some Client Setting to be done(though i have tried doing some permutation combination)...
Any kind of help would be appreciated,
Thanks & Regards,
Pratik
Edited by: prats on Feb 27, 2009 12:57 PM

Hey Sergiusz,
You were bang on target...
Though it took some time for me to resolve the issue...
to use SQLExecDirectW I need my query in SQLWCHAR *, which is stored in char * in my case...
So i converted the incoming query using MultibyteToWideChar Conversion with CodePage as CP_UTF8 and
then passed it on to SQLExecDirectW...
It solved my problem
Thanks,
Pratik...
Edited by: prats on Mar 3, 2009 2:41 PM

How to validate a Query without executing it?

How to validate a Query without executing it?
For example if I have:
ReadAllQuery myQuery = new ReadAllQuery(myClass);
myQuery.setSelectionCriteria(myExpression);
What can I do to have must validation as possible been done before executing the query?
Validation that could be done are:
- Expression reference fields that really exist in TopLink mapping
- Literal provided to expression are of compatible type
- Parameter setting set against the query are all compatible

Your could prepare the query.
query.prepareCall(session, record);
This will do all query validation and generate the SQL for the query.

Can I rewrite the following query without using Row_number() function ??!!

Hello every one, can I rewrite the following query without using the 'ROW_NUMBER() OVER ' part.
The query is supposed to pull out the records whose CODE is not NULL and has most
recent date for UPDATE_DATE . The reason I wanted to do this is, When I embed this query
in between many other queries along with JOINs, My oracle server is unable to execute. So, I thought
its better to supplant 'ROW_NUMBER() OVER ' logic with something else and try it. .
SELECT a.* FROM
(SELECT b.*, ROW_NUMBER() OVER (PARTITION BY b.PIDM
ORDER BY b.UPDATE_DATE DESC) AS Rno
FROM
SELECT *
FROM SHYNCRO WHERE CODE IS NOT NULL
)b
)a
WHERE a.Rno = 1

Hi,
You didn't write over 150 lines of code and then start testing it, did you?
Don't.
Take baby steps. Write as little as pssiblem test that. Debug and test again until you have something that does exactly what you want it to do.
When you have somehting that works perfectly, take one baby step. Add a tiny amount of code, maybe 1 or 2 lines more, and test again.
When you do get an error, or wrong results, you'll have a much better idea of where the problem is. also, you won't be building code on a flimsy foundation.
If you need help, post the last working version and the new version with the error. Explain what you're trying to do in the new version.
The error message indicates line 133. It looks like line 133 of your code is blank. Does your front end allow completely blank lines in the middle of a query? SQL*Plus doesn't by default; you have to say
SET SQLBLANKLINES ONto have a completely blank line in SQL*Plus. (However, lines containing nothing but at commnet are always allowed.)
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.

How can i fetch records from 3 tables in a single query without using join

Hi.
Can any body please tell me <b>How can i fetch records from 3 tables with a single query without using joins</b>
Thanx
prabhudutta

Hi Prabgudutta,
We can fetch the data by using the views concept.
Go throuth this info we can know the how to create view and same like database table only we can fetch the data.
Views conatin the data at runtime only.
Four different view types are supported. These differ in the
way in which the view is implemented and in the methods
permitted for accessing the view data.
Database views are implemented with an equivalent view on
the database.
Projection views are used to hide fields of a table (only
projection).
Help views can be used as selection method in search helps.
Maintenance views permit you to maintain the data
distributed
on several tables for one application object at one time.
step by step creation of Maintenance view:
With the help of the table maintenance generator, you are able to maintain the ENTRIES of the table in SM30 transaction.
It can be set in transaction SE11 - Tools - Table maintenance generator.
Table maintanance Generator is used to manually input values using transaction sm30
follow below steps
1) go to se11 check table maintanance check box under attributes tab
2) utilities-table maintanance Generator-> create function group and assign it under
function group input box. Also assign authorization group default &NC& .
3) select standard recording routine radio in table table mainitainence generator to move table
contents to quality and production by assigning it to request.
4) select maintaience type as single step.
5) maintainence screen as system generated numbers this dialog box appears when you click on create button
6) save and activate table
One step, two step in Table Maintenance Generator
Single step: Only overview screen is created i.e. the Table Maintenance Program will have only one screen where you can add, delete or edit records.
Two step: Two screens namely the overview screen and Single screen are created. The user can see the key fields in the first screen and can further go on to edit further details.
SM30 is used for table maintenance(addition or deletion of records),
For all the tables in SE11 for which Table maintenance is selected , they can be maintained in SM30
Sm30 is used to maintain the table ,i.e to delete ,insert or modify the field values and all..
It creates the maintenance screen for u for the aprticular table as the maintenance is not allowed for the table..
In the SE11 delivery and maintenance tab, keep the maintenance allowed..
Then come to the SM30 and then enter the table name and press maintain..,
Give the authorization group if necessary and give the function group and then select maintenance type as one step and give the screen numbers as system specified..
Then create,,,
Then u will able to see the maintenance view for the table in which u can able to insert and delete the table values...
We use SM30 transaction for entering values into any DB table.
First we create a table in SE11 and create the table maintenance generator for that Table using (utilities-> table maintenance generator) and create it.
Then it will create a View.
After that from SM30, enter the table name and Maintain, create new entries, change the existing entries for that table.
Hope this resolves your query.
Reward all the helpful answers.
Rgds,
P.Naganjana Reddy

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