Result of the query restriction based on the length of the field

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  I created the report and the application form, and I want to make the search form... I want to display the search results in the fields of element of...
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  You should think about your ad before posting.

  1. you said that you need something like in my example

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  Denes Kubicek
  -------------------------------------------------------------------
  http://deneskubicek.blogspot.com/
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• Result of the query based on the form of the parameter

  Good morning people. I really couldn't come up with a smart enough subject line, but I'll try and make up the body.
  
  I currently have a report that accepts parameters on the parameter form. They are extra employees and Number of Copies. The employee ID is stored in the Employee table, but the number of copies is not.
  
  The output of the report shows all the different addresses and phone numbers, the employee a. lets say, Employee ID 0001 has two addresses - home and office. In the report of my request, he'll give me two records in the repeating group. However, I have another parameter and the ID of the employee who is the number of Copies. In this case, if the number of Copies to be printed is 1, so it isn't a problem. However, if the Number of Copies is entered by the user is 4, I think in this case 4 x 2 = 8 pages of report output (4 with the address of the House) and 4 with the address of the office.
  
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  SELECT    e.emp_no,
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• Query MySQL or the CF code to 'Flag' a group of results from a query based on a common value?

  I have the following query that examines customer accounts:

  SELECT    ACCOUNT_ID, SUBSCRIBER_ID, PKG_CODE    
   FROM   Accounts    
   WHERE  ACCOUNT_DESC LIKE '%Eye%'    
   GROUP BY  ACCOUNT_ID

  Gives me the following result...

   1. ACCOUNT_ID,  SUBSCRIBER_ID, PKG_CODE  
   2. ---------- -------------- -------    
   3. 11016869,    10016598,      N  
   4. 11015922,    10015713,      N  
   5. 11015062,    10014878,      N  
   6. 11018312,    10017973,      Y  
   7. 11018310,    10017973,      N  
   8. 11018309,    10017973,      N  
   9. 11018308,    10017973,      N

  Question: How can I display a '1' in a column of flag if 'someone' of the 'SUBSCRIBER_ID' have a "O" value in the PKG_CODE column?

  Here are the results of the query that I'm trying to do for this example (note that the last 4 reviews should be marked with a '1' because one of them had a 'Y' for PKG_CODE and SUBSCRIBER_ID correspondent...)

  1. ACCOUNT_ID, SUBSCRIBER_ID, PKG_CODE, FLAG
  2. ---------- -------------- ------- -----
  3. 11016869,10016598, N
  4. 11015922,10015713, N
  5. 11015062,10014878, N
  6. 11018312,10017973, Y, 1
  7. 11018310,10017973, N-1
  8. 11018309,10017973, N-1
  9. 11018308,10017973, N-1

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  SELECT    ACCOUNT_ID, SUBSCRIBER_ID, PKG_CODE  
   , IF(PKG_CODE = 'Y', "Y", "N") AS FLAG    
   FROM   Accounts    
   WHERE  ACCOUNT_DESC LIKE '%Eye%'    
   GROUP BY  ACCOUNT_ID

  If this can be done on the page of the CF, which would work as well instead of in the query... I just need the Flagged values to display next to each record.

  SELECT ACCOUNT_ID, SUBSCRIBER_ID, PKG_CODE, IF(SUBSCRIBER_ID IN)

  (SELECT SUBSCRIBER_ID

  Accounts

  WHERE ACCOUNT_DESC LIKE '% eyes %' AND PKG_CODE = 'Y'), 1, 0) AS flag

  Accounts

  WHERE ACCOUNT_DESC LIKE '% % eyes '.

  ACCOUNT_ID GROUP

• assign the value to a selection of the result of a query control

  I want to assign a value to my controls with the result of the query.

  It works for CFINPUT TEXT, but it does not work to SELECT

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  I have CFSTOREPROC as follows:

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  @Iccsi,

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  "#Rating #

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• Select a table returned in the result of the query

  Hi, I'm trying to find a way to query a table name that I'm back to a different query. I am doing this in pure SQL and PL/SQL, if I can.
  
  Here's the situation. I have a table called FILES, a table called TYPE and an unknown number of different reference tables with different names.
  
  Each entry in the FILE has a reference to a TYPE id, and each entry type is a varchar that contains the name of a table reference, such as PHOTO_INFORMATION, PDF_INFORMATION or XML_INFORMATION.
  
  I want to be able to extract the data from the reference table for any data file. So with a file id, I question TYPE to get the name of the reference table (IE, "PHOTO_INFORMATION" back) then the request it is at this table for all of its columns, using the reference id in the FILE table.
  
  The thing is that I wish it were generic, so that I can just add an entry to AA_TYPE and a new table for this type, and then I can ask her but I want, through the FILE table. The reason is that there are some data that is common for all files, and I would like to that data in one place.
  
  Here is my paintings, I have two reference tables of the sample to the bottom "AA_FILETYPE1" and "AA_FILETYPE_PHOTO".
  

  CREATE TABLE  "AA_FILES" 
     (     "FILE_ID" NUMBER, 
       "FILE_NAME" VARCHAR2(4000), 
       "FILE_TYPE" NUMBER, 
       "REFERENCE_ID" NUMBER, 
        CONSTRAINT "AA_TEST_FILE_PK" PRIMARY KEY ("FILE_ID") ENABLE
     )
  /
  
  CREATE TABLE  "AA_TYPE" 
     (     "TYPE_ID" NUMBER NOT NULL ENABLE, 
       "REFERENCE_TABLE" VARCHAR2(4000), 
        CONSTRAINT "AA_TYPE_PK" PRIMARY KEY ("TYPE_ID") ENABLE
     )
  /
  
  CREATE TABLE  "AA_FILETYPE1" 
     (     "REFERENCE_ID" NUMBER, 
       "DATE_MODIFIED" DATE, 
       "SUMMARY" VARCHAR2(4000), 
       "TOTAL_VALUE" NUMBER(5,2), 
        CONSTRAINT "AA_FILETYPE1_PK" PRIMARY KEY ("REFERENCE_ID") ENABLE
     )
  /
  
  CREATE TABLE  "AA_FILETYPE_PHOTO" 
     (     "REFERENCE_ID" NUMBER NOT NULL ENABLE, 
       "DATE_TAKEN" DATE, 
       "CAMERA_NUMBER" VARCHAR2(4000), 
       "WEATHER_CONDITIONS" VARCHAR2(4000), 
       "CONSULTANT_NAME" VARCHAR2(4000), 
        CONSTRAINT "AA_FILETYPE_PHOTO_PK" PRIMARY KEY ("REFERENCE_ID") ENABLE
     )
  /

  Here's an example query I would use:
  

  select * from (select REFERENCE_TABLE from AA_TYPE where TYPE_ID = AA_FILES.FILE_TYPE) where REFERENCE_ID = AA_FILES.REFERENCE_ID;

  So who withdrew all the columns in the reference given in AA_TYPE table based on an entry in AA_FILES.
  
  I'm not entirely sure how to do this, or if this is possible even without using PL/SQL.
  
  I'm open to suggestions on how to achieve what I want with a different design of table, I am a student and I'm not really experienced in database design. (My first design of database class isn't until next year!)
  
  Thank you very much!

  Hello

  [email protected] wrote:
  Sorry about the confusion about file_id = 3, I meant the insert in the third I've included. I did not indicate the id_fichier in my inserts since it is the main key and it auto increments.

  It is important to post of the CREATE TABLE and INSERT statements that work. All those who want to help you to will want to recreate the problem and test solutions. Also, do not use strings for all entries. If the column is a NUMBER, use a NUMBER in the INSERT statement. If the column is a DATE, use a DATE or a function that returns a DATE.
  So you should post something like:

  insert into AA_FILES(FILE_ID, FILE_NAME, FILE_TYPE, REFERENCE_ID) values (1, 'test-photo-1.jpg',  1,  1);
  insert into AA_FILES(FILE_ID, FILE_NAME, FILE_TYPE, REFERENCE_ID) values (2, 'test-xml-1.jpg',    2,  2);
  insert into AA_FILES(FILE_ID, FILE_NAME, FILE_TYPE, REFERENCE_ID) values (3, 'test-photo-2.jpg',  1,  2);
  -- The value file_type=1 immediately above was not in your original data, but seems to be what you meant.
  
  prompt =====  AA_TYPE Table:  =====
  
  insert into AA_TYPE(TYPE_ID, REFERENCE_TABLE) values (1, 'AA_FILETYPE_PHOTO');
  insert into AA_TYPE(TYPE_ID, REFERENCE_TABLE) values (2, 'AA_FILETYPE1');
  
  prompt =====  AA_FILETYPE1 Table:  =====
  
  insert into AA_FILETYPE1 (REFERENCE_ID, DATE_MODIFIED,                 SUMMARY,                                    TOTAL_VALUE)
         values           (1,           TO_DATE ('01-01-02', 'MM-DD-RR'), 'An XML file that has some information about something', '14');
  
  prompt =====  AA_FILETYPE_PHOTO Table:  =====
  
  insert into AA_FILETYPE_PHOTO (REFERENCE_ID, DATE_TAKEN,                 CAMERA_NUMBER, WEATHER_CONDITIONS, CONSULTANT_NAME)
                  values            (1,          TO_DATE ('01-01-01', 'MM-DD/RR'), 'abc123',      'rainy!',         'John Smith');
  insert into AA_FILETYPE_PHOTO (REFERENCE_ID, DATE_TAKEN,                 CAMERA_NUMBER, WEATHER_CONDITIONS, CONSULTANT_NAME)
                  values            (2,          TO_DATE ('01-01-02', 'MM-DD/RR'), 'def456',      'slightly cloudy',  'Jane Jones');
  commit;
  

  To give you my workplace, I'm applying in Application Express. A user has entered the number '3' the file_id (I'm not worried about the distinction between passing in the id_fichier and the name of the file, I just my application one application or the other).

  Now, run a query that will get related data which table it is stored in. I don't know the name of the table at design time, as that particular file may be of any type (each of which has a different table name). However, with a the file_id, I have a file_type (in aa_files) which refers to an entry in aa_type.

  I see. You could add even add new tables after this query is written. As long as the new table has a column named reference_id, and there is a line for the new table in aa_files, the following query should work.

  >

  select FILE_TYPE
  from AA_FILES
  where FILE_ID = 3
  

  I stored the name of the table, I need to ask for the rest of the data in aa_type at design time, so using the file_type value, I can get the name of reference_table:

  select REFERENCE_TABLE from AA_TYPE where FILE_TYPE = 1
  

  In the sample data, you have validated, Type_de_fichier = 2 on the 3rd row. I've changed that in my example 1 revised data.
  Be very careful that your explanation fits your data. You talk to people who know about your application, and it is very easy for them to be induced in error or confusion.

  Now the '1' is here that the first query would return. I would like to use a subquery to combine these two queries into a single (I think?). This second query would return "AA_FILETYPE_PHOTO", which is the reference table.

  So I have the reference table, which is a name of table to another table in my database. It contains the data that I'm actually looking for. I want it for this particular file (file_id 3), and in aa_files, I have a value of "reference_id", which refers to the respective line in the reference table. File_id 3, the reference_id is 2.

  select * from AA_FILETYPE_PHOTO
  where reference_id = 2
  

  If the above query gets me my final data.

  Now, I've been watching substitution values and bind variables, here's another way to explain what I want:

  Explanation step by step below is very useful. It would be more useful if each step uniquely and gavce movement results given the sample data and an example of setting (3 in this case)

  -- get the file_type from aa_files for the desired file
  EXEC :file_type := (select file_type from aa_files where file_id = 3);
  

  That we will call the step step (a) above.
  Step (a) sets: Type_de_fichier 1 (given my corrected sample data)

  -- get the reference table from aa_types using the file_type
  EXEC :reference_table := (select reference_table from aa_type where type_id = :file_type);
  

  That we will call the step step (b) above.
  (B) sets the stage: reference_table to 'AA_FILETYPE_PHOTO '.

  -- get the reference_id from aa_files for the desired file
  EXEC :reference_id := (select reference_id from aa_files where file_id = 3);
  

  That we will call the step step (c) above.
  (C) sets the stage: reference_id 2

  -- using the reference table and reference id for the desired file, get the rest of the data
  select * from :reference_table where reference_id = :reference_id;
  

  Not sure if this makes it more clear or not.

  Yes, it helps a lot.

  Basically I have a table full of table names. How do I write a query that pulls one of these table names and it then queries?

  You need SQL dynamic, because you can't hardcode a table name in the query that you normally would be.
  How dynamic SQL works normally (and the functioning of this example) are that the query is built by using a variable. In SQL * more (as shown below), you can simply use a variable substitution instead an identifier hardcoded, and that's what it takes to make the dynamic query from SQL * more resolves the substitution variables before sending the code for the compiler. I don't know much on the Apex, but I bet there's some way to do dynamic SQL in the Apex, too.
  So the dynamic part here should include step d, since you can't hardcode the name of the table in the query.
  Until we can step (d), then, did they to us to do the steps (a) and (b) to obtain this file name. In the example blelow, I used a separate, preliminary request to get the & table_name...
  Step (c) could be made in the main query, using a subquery or a join. However, I chose to step (c) in the preliminary motion, as well as steps (a) and (b), since it's the same table same step (a). In this way, step (d) must refer to a table.

  Here's (finally) how to make this work in SQL * more:

  ACCEPT     file_id     PROMPT     "Enter the file_id (a number, e.g. 3): "
  
  -- Preliminary Query, to set table_name
  
  COLUMN     reference_id_col     NEW_VALUE     reference_id
  COLUMN     table_name_col           NEW_VALUE     table_name
  
  SELECT  f.reference_id          AS reference_id_col
  ,     t.reference_table       AS table_name_col
  FROM      aa_files     f
  JOIN     aa_type          t     ON     f.file_type     = t.type_id
  WHERE     f.file_id     = &file_id
  ;
  
  --     Main Query
  
  SELECT  *
  FROM     &table_name
  WHERE      reference_id     = &reference_id
  ;
  

  The results, account required to the data from the sample I posted above, and the & file_id 3, are:

  `                      CAMERA_    WEATHER_        CONSULTANT_
  REFERENCE_ID DATE_TAKE NUMBER     CONDITIONS      NAME
  ------------ --------- ---------- --------------- ---------------
             2 01-JAN-02 def456     slightly cloudy Jane Jones
  

• Need to print the results of a query in a CASE statement

  I want to print the results of a query in a CASE statement:

  SELECT RUN_STATUS

  Of

  (select check BOX WHEN COUNT (ROW_WID) = 0 THEN 'NO JOBS RAN AFTER' |) (select sysdate - XXAFL_MINUTES MINUTE)

  END RUN_STATUS

  of W_ETL_RUN_SDTL

  where START_TS >

  (sélectionnez sysdate-MINUTES de XXAFL_MINUTES)) where RUN_STATUS is not null; e

  The query above subtracted 5 minutes from SYSDATE and he shoots XXAFL_MINUTES. I am doing this because we could change the number of minutes in the future. I want to print the number of minutes in the case statement.

  If I execute this statement, it throws an error stating:

  ORA-00937: not a single group group function

  00937 00000 - 'not a single-group function.

  * Cause:

  * Action:

  Error on line: 1 column: 96

  How can I include "select sysdate - MINUTES of XXAFL_MINUTES" in the CASE that it calculates the number of minutes and it prints with the results.

  Thanks in advance!

  Hey guys,.

  I found the solution:

  SELECT

  RUN_STATUS | TO_CHAR ((sélectionnez sysdate-MINUTES de XXAFL_MINUTES), 'HH24:MI:SS')

  Of

  (select check BOX WHEN COUNT (ROW_WID) = 0

  THEN "NO JOB RAN.

  END RUN_STATUS

  of W_ETL_RUN_SDTL

  where

  START_TS > (select sysdate - XXAFL_MINUTES MINUTE))

  where

  RUN_STATUS is not null;

  The output:

  NO JOBS RAN AFTER 09:07:54

  Thanks to you all!

• Can we make several Off features in a collection of panels and how the query-off based on the example?

  Mr President.

  Can we make several Off features in a collection of panels and how the query-off based on the example?

  Concerning

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• How to call a taskflow based on results from the drop-down list. ?

  Hello

  I want to call a taskflow based on the results of the drop-down list, I have a drop down list with LOV, if I choose a value insofar as it must call the taskflow are entrusted to him. How to do this. ?. How to assign a taskflow for all values and how to call it. Someone please help...

  Page:

  http://Java.Sun.com/JSP/page"version ="2.1 ".

  xmlns:af ="http://xmlns.oracle.com/adf/faces/rich" >. "

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  valueChangeListener = "#{SelectBean.onSelection}" > "

  Main.XML (TaskFlow);

  http://xmlns.Oracle.com/ADF/controller"version ="1.2">

  Choose

  Choose.JSFF

  /Web-INF/FirstTF.XML

  FirstTF

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  Choose

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  SecondTaskFlow

  

  Code VlaueChange Listner already told you.

  First and second pages only contain output text component in my example. I think that is not necessary

  Concerning

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• ORA-06504: PL/SQL: return variables of the game results or the query types do not match

  Hello!

  I have a simple object type and a proecdure in which I am trying to use it to insert into another table

  -object

  CREATE ORREPLACETYPEmt_mtg ASOBJECT

  (

  ACOL NUMBER ,

  BCOL NVARCHAR2 (100)

  );

  CREATE ORREPLACETYPEREF_MTG ASTABLEOFMt_MTG ;

  -same structure as the use of sampletbl target table in the cursor query

  create table tbl_MT_MTG

  (

  ACOL NUMBER ,

  BCOL NVARCHAR2 (100)

  );

  -procedure

  CREATE ORREPLACEINTERIORTEST_PROCEDURE1

  AS

  ref_cur sys_refcursor ;

  REFR ref_mtg ;

  BEGIN

  OPEN ref_cur FOR

  Select acol,

  BCOL

  DE sampletbl où rownum<10;

  Fetch ref_cur in bulk collectintorefr;

  Insert intotbl_MT_MTG(acol,bcol)selectacol,bcol fromtable(refr);

  commit;

  CLOSE Ref_cur;

  END;

  /

  When I run this procedure fails with

  ORA-06504: PL/SQL: return variables of the game results or the query types do not match

  ORA-06512: at "TEST_PROCEDURE1", line 10

  ORA-06512: at line 2

  Any help on this please...

  Thanks to an OLD POST below

  so perfect helped me! Thank you

  Tubby

  After 5 years of more :-)

  How to store refcursor in collection How to store refcursor in collection

• PLSQL function to return the result of the query

  Dear all,

  Oracle Database SE1 11.2.0.1

  I need to create a plsql function which should accept SQL as a parameter, execute it and return the result set.

  Is this possible?

  Madhu.149 wrote:

  I need to create a plsql function which should accept SQL as a parameter, execute it and return the result set.

  Be careful - results games indicate a set of data stored in memory. This is not what are sliders. This isn't how Oracle should be used.

  Imagine that you implement such a result set function - which, on average, requires 1 MB of memory (private server) to store the results of the SQL query. A 100 users mean a 100 MB of memory required server. This is not suitable. Not at all. Never.

  The correct back 'thing' is a handle to SQL cursor (called a ref cursor in this case). A SQL cursor is a "program" - that the appellant runs via the fetch command and generates one or more lines accordingly. Appellant repeatedly runs this slider through calls to fetch until this slider found and returns all rows affected (using consistent readings).

  If you want an abstraction interface that the client can call via PL/SQL code in the database, so this crafting optimal SQL interface, creates the SQL cursor and returns the handle of the cursor (via the ref cursor data type) to the client.

• Procedure to export the result of the query to an excel or csv

  Hi all

  I have two identical paintings

  EMP_TEST OF THE EMP

  ID ID NAME

  1     SAM                      1        SAM

  2 JOHN 2 ROCK

  3 3 STEVE BRAND

  I need to combine the result under the query and intent to export data to excel using a procedure

  my query is

  Select 'EMP_ID', E1. EMP_ID, AND. EMP_ID from emp E1,

  emp_test AND WHERE E1. EMP_ID = AND. EMP_ID

  UNION

  Select "EMP_NAME", E1. EMP_NAME, AND. Emp E1 EMP_NAME,

  emp_test AND WHERE E1. EMP_ID = AND. EMP_ID

  but I get this error message

  ORA-01790: expression must have same type of corresponding data

  EMP_ID is a number and EMP_NAME is of type varchar.

  I need any idea or suggestion on sub queries.

  (1) I have to combine the result set in a single query.

  (2) I need to write the procedure that will export the result of the query to an excel or csv.

  Thank you.

  As PR has said, there are ways that have already been explained in this forum to write in external files. For your query condition, try this.

  SELECT CASE WHEN (REGEXP_LIKE (T1.ID,'[^ [: alpha:]] "")) THEN 'EMP_ID '.

  ELSE "EMP_NAME' END AS COL_NAME.

  T1.ID,

  T2.ID

  DE)

  SELECT CASE WHEN ID IS NULL THEN NAME ANOTHER TO_CHAR (ID) END AS ID,

  ROW_NUMBER () OVER(ORDER BY RN NULLS FIRST,ID) RN

  DE)

  SELECT ID, NULL,

  NAME,

  RN ID

  FROM EMP

  UNION ALL

  SELECT ID,

  NAME,

  RN NULL

  FROM EMP)) T1.

  (SELECT CASE WHEN ID IS NULL THEN NAME ANOTHER TO_CHAR (ID) END AS ID,)

  ROW_NUMBER () OVER(ORDER BY RN NULLS FIRST,ID) RN

  DE)

  SELECT ID, NULL,

  NAME,

  RN ID

  OF EMP_TEST

  UNION ALL

  SELECT ID,

  NAME,

  RN NULL

  OF EMP_TEST)) T2

  WHERE T1. RN = T2. RN;

  OUTPUT:

  COLUMN-NAME ID ID
  --------  ---------------
  1 1 EMP_ID
  2 2 EMP_ID
  3 3 EMP_ID
  SAM EMP_NAME MARK
  EMP_NAME JOHN JOHN
  EMP_NAME STEVE DARREN

  6 selected lines.

• Is it possible to put the results of a query in a variable to use in the bean class?

  Hello, I am using JDeveloper 12.1.2.0.0

  I like to keep the result of my queries (the method that I created in the AppModule) in a richeTableau or another type of variable, so I can get results and I don't have to make unnecessary after queries. I don't think that the query is the problem but keeping the results.

  I tried to do in using this:

  public String testVFactSales (String conditions) {}

  PreparedStatement query = getDBTransaction () .createPreparedStatement ("" + "select * from v_fact_sales"+ conditions, 0 ");

  ResultSet rs;

  Outcome of the result set;

  Result of the richeTableau;

  String result = null;

  try {}

  query.setString (1, conditions);

  Query.Execute ();

  Query.Execute ();

  result = query.getGeneratedKeys ();

  Query.Close ();

  System.out.println ("result:" + result.toString ());

  return result.toString ();

  } catch (SQLException e) {}

  e.printStackTrace ();

  }

  Return ' ';

  }

  As you can see, I have already tried a few solutions, but so far I have only errors (cannot convert or null exception, when I try to put the result in a richeTableau in my bean class)

  Any ideas?

  It is very important for me, because it would improve the performance of my project a lot.

  Kind regards

  Frederico.

  Although the issue is not 100% responded, I used the idea that Shay told me, where you can create a method in your AppModule to set your where clause!

  Good luck to everyone who has the same problem.

  As an attack similar to what I wanted in the first place, you can check this:

  https://community.Oracle.com/thread/2619669

  Kind regards

  Frederico.

• 4.0 ai2 - automatic adjustment does not properly in the result of the query grid

  Hello

  in 4.0 ai2 automatic adjustment does not work in the result of the query grid.

  Rather than shrink the columns to the narrower size taking into account topics and content (see 3.2), it auto ' enlarged to fit the entire grid of data query.

  She looks worse and makes it harder to see results at a glance.

  Bug and will be fixed for the release of v4.

• HO to get the result of the script with query of 11 g

  Hello
  
  While doing tasks of refreshment as you need to run some select query. am so lazy to check each application one by one, so I've placed all querys in a script and I ran
  I was fine but it does not show only the result of the query, but it shows no query. Can we get the query and put query via the script out.
  
  Ex: one.sql
  have the script below the querys
  
  Select the name of database v$.
  Select count (*) from v$ datafile;
  Select count (*) from dba_db_links;
  Select the owner, db_link dba_db_links;
  
  can someone help me on this...
  
  Concerning
  
  Published by: 889571 on 19 may 2013 14:59

  [oracle@localhost samples]$ cat sample.sql
  set term on echo on
  select name from v$database;
  select count(*) from v$datafile;
  select count(*) from dba_db_links;
  select owner,db_link from dba_db_links;
  [oracle@localhost samples]$ sqlplus user1/user1 @sample.sql
  
  SQL*Plus: Release 11.2.0.2.0 Production on Sun May 19 16:06:20 2013
  
  Copyright (c) 1982, 2010, Oracle.  All rights reserved.
  
  Connected to:
  Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - Production
  With the Partitioning, OLAP, Data Mining and Real Application Testing options
  
  SQL> select name from v$database;
  
  NAME
  ---------
  ORCL
  
  SQL> select count(*) from v$datafile;
  
    COUNT(*)
  ----------
           6
  
  SQL> select count(*) from dba_db_links;
  
    COUNT(*)
  ----------
           0
  
  SQL> select owner,db_link from dba_db_links;
  
  no rows selected
  
  SQL>