Get an empty result set but not null

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  Hi I have a query that returns events that do not have the mrreceived as 'Y '. I'm trying to find a way how we can rewrite the query which gives the events without mrreceived as "Y" or mrreceived as null but events both on the handset? "
  
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  user11961230 wrote:

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• UNION and UNION ALL giving multiple result sets even if INTERSECT does not lines.

  Hello

  I have a set of two queries. I used the UNION to join the result set. When I used UNION ALL, I get a different result set.

  BT when I use INTERSECT, I m not getting all the lines.

  SO, which I guess is, as operation INTERSECT isn't Govind all the lines, then the UNION and UNION ALL of the result sets must be simliar.

  But I m getting different result sets.

  Please guide me.

  Thank you.

  Hello

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  INTERSECT has nothing to do with it.  You can have the lines in a single query.  For example

  Job SELECTION

  FROM scott.emp

  UNION - ALL THE

  SELECT 'FUBAR '.

  DOUBLE;

  In this example, there is no overlap between the 2 queries (INTERSECT would have 0 rows).

  UNION produces 6 lines, because the query at the top of the page produces 5 distinct lines (of 14 total ranks) and the background query 1.

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• Combine queries to get the result set with max Y

  Hello
  I use forms 6i and db 10.2.0.1.0
  
  With the query below

  Select ufam_usrgrp,ufam_filegrp,ufam_read,ufam_write,ufam_overwrite,ufam_delete from usr_file_access_master
  Where ufam_ecode = '0004108';

  the result set is

  UFAM_USRGRP     UFAM_FILEGRP    UFA UFA UFA UFA
  --------------- --------------- --- --- --- ---
  MGMNT           CV              Y   Y   Y   Y
  EMPLOYEE        GENERAL         Y   N   N   N
  EMPLOYEE        PERSONAL        Y   N   N   N

  Another query

  Select uul_usrgrp, ufl_file_grp,ufl_read,ufl_write,ufl_overwrite,ufl_delete from usr_usrgrp_lnk,USRGRP_FILEGRP_LINK
  Where usr_usrgrp_lnk.uul_usrgrp = USRGRP_FILEGRP_LINK.UFL_USR_GRP
  and usr_usrgrp_lnk.uul_ecode = '0004108'

  gives the result

  UUL_USRGRP      UFL_FILE_GRP    UFL UFL UFL UFL
  --------------- --------------- --- --- --- ---
  MGMNT           GENERAL         Y   Y   Y   Y
  EMPLOYEE        GENERAL         Y   Y   N   N
  MGMNT           CV              Y   N   N   N

  I need to combine these two queries to get a separate result set with maximum Y
  
  Like here "MGMNT CV" is repeated in both the result set, but the first has more, then it should come from the combined result set. reverse-case also the same (such as "EMPLOYEE GENERAL")
  
  So I want to combine the queries so that I get the result as set below

  UserGroup       FileGroup       Rd Wrt Owrt Del
  --------------- --------------- --- --- --- ---
  MGMNT           GENERAL         Y   Y   Y   Y
  EMPLOYEE        GENERAL         Y   Y   N   N
  MGMNT           CV              Y   Y   Y   Y
  EMPLOYEE        PERSONAL        Y   N   N   N

  Please help me to combine these queries
  
  Published by: Divya on August 14, 2011 21:24
  Changed the result set and the last exit

  NOT TESTED!

  select y.uul_usrgrp,
         y.ufl_file_grp,
         greatest(ufl_read,nvl(ufam_read,' ')) ufl_read,
         greatest(ufl_write,nvl(ufam_write,' ')) ufl_write,
         greatest(ufl_overwrite,nvl(ufam_overwrite,' ')) ufl_overwrite,
         greatest(ufl_delete,nvl(ufam_delete,' ')) ufl_delete
    from (select ufam_usrgrp,ufam_filegrp,ufam_read,ufam_write,ufam_overwrite,ufam_delete
            from usr_file_access_master
           Where ufam_ecode = '0004108'
         ) x,
         (select uul_usrgrp, ufl_file_grp,ufl_read,ufl_write,ufl_overwrite,ufl_delete
            from usr_usrgrp_lnk,USRGRP_FILEGRP_LINK
           Where usr_usrgrp_lnk.uul_usrgrp = USRGRP_FILEGRP_LINK.UFL_USR_GRP
             and usr_usrgrp_lnk.uul_ecode = '0004108'
         ) y
   where y.uul_usrgrp = x.ufam_usrgrp(+)
     and y.ufl_file_grp = x.ufam_filegrp(+)
  

  Concerning

  Etbin

  Edited by: Etbin on 14.8.2011 13:08
  deleted by group

• Generate a single XML file of the multiple JDBC result set

  Hello
  
  I need to create a single XML file of the multiple result set. The code below is to generate a XML signle leave a single result set, but suppose we have five different tables in the same database and the tables aren't relalted to the other.
  
  for example: select * from SAMPLE_PRODUCT
  Select * command
  Select * LOGISTICS... and many others.
  
  
  You can create multiple sets of results by top queries but how can write all values using a JDBC result set in a single xml file? Help, please.
  
  a signle file xml from one generator result
  
  import java.io.StringWriter;
  import java.sql.Connection;
  to import java.sql.DriverManager;
  import java.sql.ResultSet;
  import java.sql.ResultSetMetaData;
  
  Import javax.xml.parsers.DocumentBuilder;
  Import javax.xml.parsers.DocumentBuilderFactory;
  Import javax.xml.transform.OutputKeys.
  Import javax.xml.transform.Transformer;
  Import javax.xml.transform.TransformerFactory;
  Import javax.xml.transform.dom.DOMSource;
  Import javax.xml.transform.stream.StreamResult;
  
  to import org.W3C.DOM.document;
  Import org.w3c.dom.Element;
  
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  Element results = doc.createElement ("Results");
  doc.appendChild (results);
  
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  ResultSetMetaData rsmd = rs.getMetaData ();
  int colCount = rsmd.getColumnCount ();
  
  While (RS. Next {}
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  for (int i = 1; i < = colCount; i ++) {}
  String columnName = rsmd.getColumnName (i);
  Object value = rs.getObject (i);
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  }
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  transformer.setOutputProperty (OutputKeys.ENCODING, "ISO-8859-1");
  StringWriter sw = new StringWriter();
  StreamResult sr = new StreamResult (sw);
  transform. Transform (domSource, sr);
  
  System.out.println (SW. ToString());
  
  con. Close;
  RS. Close();
  }
  }
  
  Thank you
  Sumit
  
  Published by: user8687839 on April 4, 2012 23:04
  
  Published by: user8687839 on April 4, 2012 23:09

  As EJP says, you really want to get the data in a single request, if possible (and I don't see why that shouldn't be the case).
  In fact, you really want to get this query to return the data as close the format you need as you can.

  If you did this on Oracle, for example, I'd get Oracle to produce XML that you can then turn (assuming that you could not itself produce the XML you want directly).
  In your case, using some db (access?), and then just get the line structure such as the conversion to XML involves the least amount of faffing about.

  Rethink the SQL and the rest should be easy.

• Ref cursor - result series is not known

  Hi all
  
  My requirement is as below
  (1) the query to run is stored in a table because the query vary each time
  (2) execution of the query and treat it
  
  As the query could be of any table that I'm stuck on go get the query in a variable and treatment. Pls see my example below
  
  
  CUR cursor is
  Select sql_stmt sql1 - extract the sql to run
  RTA;
  
  Open p_cursor for sql1; -Open the ref cursor
  loop
  look for p_cursor in? * -as the result set does not know initially how to declare a variable for it *.
  output p_cursor % notfound;
  -the results of the process
  end loop;
  
  Help, please. Hope I'm clear with my question. If not, please let me know

  Oracle says:
  Hi all

  My requirement is as below
  (1) the query to run is stored in a table because the query vary each time
  (2) execution of the query and treat it

  As the query could be of any table that I'm stuck on go get the query in a variable and treatment. Pls see my example below

  CUR cursor is
  Select sql_stmt sql1 - extract the sql to run
  RTA;

  Open p_cursor for sql1; -Open the ref cursor
  loop
  look for p_cursor in? * -as the result set does not know initially how to declare a variable for it *.
  output p_cursor % notfound;
  -the results of the process
  end loop;

  Help, please. Hope I'm clear with my question. If not, please let me know

  Storage of queries in a table? This looks like a bad design, not to mention the possibility of SQL injection and causing ALL of your code to be written to be dynamic, where a nightmare to debug. Ouch!

  You will not be able to do with a ref cursor if you don't know what to expect as the columns returned.
  You can use the DBMS_SQL package and describe the query so that you can find on the columns and data types in the results... example of this package... (my example standard production CSV files)...

  -----

  As user sys:

  CREATE OR REPLACE DIRECTORY TEST_DIR AS '\tmp\myfiles'
  /
  GRANT READ, WRITE ON DIRECTORY TEST_DIR TO myuser
  /
  

  As myuser:

  CREATE OR REPLACE PROCEDURE run_query(p_sql IN VARCHAR2
                                       ,p_dir IN VARCHAR2
                                       ,p_header_file IN VARCHAR2
                                       ,p_data_file IN VARCHAR2 := NULL) IS
    v_finaltxt  VARCHAR2(4000);
    v_v_val     VARCHAR2(4000);
    v_n_val     NUMBER;
    v_d_val     DATE;
    v_ret       NUMBER;
    c           NUMBER;
    d           NUMBER;
    col_cnt     INTEGER;
    f           BOOLEAN;
    rec_tab     DBMS_SQL.DESC_TAB;
    col_num     NUMBER;
    v_fh        UTL_FILE.FILE_TYPE;
    v_samefile  BOOLEAN := (NVL(p_data_file,p_header_file) = p_header_file);
  BEGIN
    c := DBMS_SQL.OPEN_CURSOR;
    DBMS_SQL.PARSE(c, p_sql, DBMS_SQL.NATIVE);
    d := DBMS_SQL.EXECUTE(c);
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    FOR j in 1..col_cnt
    LOOP
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        WHEN 2 THEN DBMS_SQL.DEFINE_COLUMN(c,j,v_n_val);
        WHEN 12 THEN DBMS_SQL.DEFINE_COLUMN(c,j,v_d_val);
      ELSE
        DBMS_SQL.DEFINE_COLUMN(c,j,v_v_val,2000);
      END CASE;
    END LOOP;
    -- This part outputs the HEADER
    v_fh := UTL_FILE.FOPEN(upper(p_dir),p_header_file,'w',32767);
    FOR j in 1..col_cnt
    LOOP
      v_finaltxt := ltrim(v_finaltxt||','||lower(rec_tab(j).col_name),',');
    END LOOP;
    --  DBMS_OUTPUT.PUT_LINE(v_finaltxt);
    UTL_FILE.PUT_LINE(v_fh, v_finaltxt);
    IF NOT v_samefile THEN
      UTL_FILE.FCLOSE(v_fh);
    END IF;
    --
    -- This part outputs the DATA
    IF NOT v_samefile THEN
      v_fh := UTL_FILE.FOPEN(upper(p_dir),p_data_file,'w',32767);
    END IF;
    LOOP
      v_ret := DBMS_SQL.FETCH_ROWS(c);
      EXIT WHEN v_ret = 0;
      v_finaltxt := NULL;
      FOR j in 1..col_cnt
      LOOP
        CASE rec_tab(j).col_type
          WHEN 1 THEN DBMS_SQL.COLUMN_VALUE(c,j,v_v_val);
                      v_finaltxt := ltrim(v_finaltxt||',"'||v_v_val||'"',',');
          WHEN 2 THEN DBMS_SQL.COLUMN_VALUE(c,j,v_n_val);
                      v_finaltxt := ltrim(v_finaltxt||','||v_n_val,',');
          WHEN 12 THEN DBMS_SQL.COLUMN_VALUE(c,j,v_d_val);
                      v_finaltxt := ltrim(v_finaltxt||','||to_char(v_d_val,'DD/MM/YYYY HH24:MI:SS'),',');
        ELSE
          v_finaltxt := ltrim(v_finaltxt||',"'||v_v_val||'"',',');
        END CASE;
      END LOOP;
    --  DBMS_OUTPUT.PUT_LINE(v_finaltxt);
      UTL_FILE.PUT_LINE(v_fh, v_finaltxt);
    END LOOP;
    UTL_FILE.FCLOSE(v_fh);
    DBMS_SQL.CLOSE_CURSOR(c);
  END;
  

  This allows the header line and the data to write into files separate if necessary.

  for example

  SQL> exec run_query('select * from emp','TEST_DIR','output.txt');
  
  PL/SQL procedure successfully completed.
  

  Output.txt file contains:

  empno,ename,job,mgr,hiredate,sal,comm,deptno
  7369,"SMITH","CLERK",7902,17/12/1980 00:00:00,800,,20
  7499,"ALLEN","SALESMAN",7698,20/02/1981 00:00:00,1600,300,30
  7521,"WARD","SALESMAN",7698,22/02/1981 00:00:00,1250,500,30
  7566,"JONES","MANAGER",7839,02/04/1981 00:00:00,2975,,20
  7654,"MARTIN","SALESMAN",7698,28/09/1981 00:00:00,1250,1400,30
  7698,"BLAKE","MANAGER",7839,01/05/1981 00:00:00,2850,,30
  7782,"CLARK","MANAGER",7839,09/06/1981 00:00:00,2450,,10
  7788,"SCOTT","ANALYST",7566,19/04/1987 00:00:00,3000,,20
  7839,"KING","PRESIDENT",,17/11/1981 00:00:00,5000,,10
  7844,"TURNER","SALESMAN",7698,08/09/1981 00:00:00,1500,0,30
  7876,"ADAMS","CLERK",7788,23/05/1987 00:00:00,1100,,20
  7900,"JAMES","CLERK",7698,03/12/1981 00:00:00,950,,30
  7902,"FORD","ANALYST",7566,03/12/1981 00:00:00,3000,,20
  7934,"MILLER","CLERK",7782,23/01/1982 00:00:00,1300,,10
  

  The procedure allows for the header and the data to separate files if necessary. Just by specifying the file name "header" will put the header and the data in a single file.

  Adapt to the exit of styles and different types of data are needed.

• I can't open firefox running but not responding not window opens and says to close the existing window. I can't do that the computer does nothing to help. I did all the suggestions here. I uninstalled and reinstalled firefox

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• Query result set...

  I can't determine a good word in my question. So, I think that my pseudocode below will be sufficient for this purpose.
  
  Oracle version: 11.2 g
  
  Data set

  WITH temp AS
  (
   SELECT 1 col1, 1 day FROM dual UNION ALL
   SELECT 2 col1, 1 day FROM dual UNION ALL
   SELECT 3 col1, 1 day FROM dual UNION ALL
   SELECT 4 col1, 1 day FROM dual UNION ALL
   SELECT 5 col1, 1 day FROM dual UNION ALL
   SELECT 6 col1, 1 day FROM dual UNION ALL
   SELECT 7 col1, 2 day FROM dual UNION ALL
   SELECT 8 col1, 2 day FROM dual UNION ALL
   SELECT 9 col1, 2 day FROM dual UNION ALL
   SELECT 10 col1,2 day FROM dual 
  )
  SELECT *
    FROM temp

  The result of the above query:

  COL1     DAY
  1     1
  2     1
  3     1
  4     1
  5     1
  6     1
  7     2
  8     2
  9     2
  10     2

  You the WISH result set:

  DAY COL_TOTAL
  1   21  
  2   55   -- 21 + 33 (the sum of day 1 + the sum of day 2)

  I realize that I can get the desired result, set above the code below. However, for my I have several other data points and 100 separate days I need to do for their actual issue. In doing so, a statement of the UNION 100 isn't exactly going to work.

  WITH temp AS
  (
   SELECT 1 col1, 1 day FROM dual UNION ALL
   SELECT 2 col1, 1 day FROM dual UNION ALL
   SELECT 3 col1, 1 day FROM dual UNION ALL
   SELECT 4 col1, 1 day FROM dual UNION ALL
   SELECT 5 col1, 1 day FROM dual UNION ALL
   SELECT 6 col1, 1 day FROM dual UNION ALL
   SELECT 7 col1, 2 day FROM dual UNION ALL
   SELECT 8 col1, 2 day FROM dual UNION ALL
   SELECT 9 col1, 2 day FROM dual UNION ALL
   SELECT 10 col1,2 day FROM dual 
  )
  SELECT SUM(col1) AS col_total
    FROM temp
   WHERE day <= 1
  UNION ALL
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    FROM temp
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  Published by: user652714 on August 13, 2012 21:55

  Hello

  I now see what you want. You can use this:

  select *
  from tt
  order by col_1;
  
       COL_1        DAY
  ---------- ----------
           1          1
           2          1
           3          1
           4          1
           5          1
           6          1
           7          2
           8          2
           9          2
          10          2
  
  10 rows selected.
  
  select day, sum(total) over  (order by  day) COL_TOTAL
  from
  (select day, sum(col_1) TOTAL
  from tt
  group by day
  );
  
      DAY  COL_TOTAL
  ---------- ----------
           1         21
           2         55
  
  2 rows selected.
  

• I have run this query to get the result as below, but, even if my query is running fine, that I do not get the expected result.

  I'm looking for only column compare to my same target table as a table source.

  My query:
  

  
  

  Select case when column_name_s is null and column_name_t is not null

  then "alter table GRADE_CONVERSION drop | column_name_t | ';'

  When column_name_s is not null and column_name_t is null

  then "alter table GRADE_CONVERSION add | column_name_s | ' ' || data_type_s | « ; »

  else 'alter table modify GRADE_CONVERSION | column_name_t | ' ' || data_type_t | « ; »

  alterations of the end

  from (select s.column_name column_name_s, t.column_name column_name_t,

  s.data_type data_type_s, t.data_type data_type_t

  (select column_name, column_id, data_type

  of all_tab_cols@database

  where owner = 'erhan.

  and table_name = "GRADE_CONVERSION."

  + 1

  full outer join

  (select column_name, column_id, data_type

  of all_tab_cols@database

  where owner = 'sarigul.

  and table_name = "GRADE_CONVERSION."

  + 6

  on s.column_name = t.column_name

  )

  
  

  
  

  
  

  Tables:

  
  

  
  

  Target table: table GRADE_CONVERSION in sarigul@database

  
  

  LETTER_GRADE		VARCHAR2 (2)
  GRADE_POINT		NUMBER (3.2)
  MAX_GRADE		NUMBER (3)
  MIN_GRADE		NUMBER (3)

  
  

  
  

  
  

  Table source: Table GRADE_CONVERSION in erhan@database

  LETTER_GRADE		VARCHAR2 (2)
  GRADE_POINT		NUMBER (3.2)
  MAX_GRADE		NUMBER (3)
  MIN_GRADE		NUMBER (3)
  CREATED_BY		VARCHAR2 (30)
  CREATED_DATE		DATE
  MODIFIED_BY		VARCHAR2 (30)
  MODIFIED_DATE		DATE

  
  

  
  

  want to see output that is similar to this * (please ignore the names of column here it's just a clear example :))

  
  

  ALTER table Target_table change BOOK_ID Varchar2 (4);

  ALTER table Target_table I addSBN_10 Varchar2(13), null;

  ALTER table drop TITLE Target_table;

  Erhan_toronto wrote:

  1.I used src.nullable src_nullable and tgt.nullable tgt_nullable but only show Yes as below: but want to see the result as not null or null

  ALTER table TEST_TARGET change the NUMBER of MAX_GRADE (3, 2) Yes

  Ok. So it's all about the Yes and the no decoding to Default Null or Not Null, isn't it?

  So, to test, change one of the table of sample for NOT NULL columns in the source table, and then run the following query:

  with src as
  (
    select src.table_name src_table_name, src.column_name src_col_name, src.data_type src_data_type, src.data_length src_data_len, src.data_precision src_data_precision, src.data_scale src_data_scale,
           src.nullable src_nullable
      from user_tab_columns src
     where table_name = 'TEST_SOURCE'
  ),
  tgt as
  (
    select tgt.table_name tgt_table_name, tgt.column_name tgt_col_name, tgt.data_type tgt_data_type, tgt.data_length tgt_data_len, tgt.data_precision tgt_data_precision, tgt.data_scale tgt_data_scale,
           tgt.nullable tgt_nullable
      from user_tab_columns tgt
     where table_name = 'TEST_TARGET'
  ),
  col_details as
  (
    select src.src_table_name, nvl(tgt.tgt_table_name, first_value(tgt_table_name) over(order by tgt_table_name nulls last)) tgt_table_name,
           src.src_col_name, src.src_data_type, src.src_data_len, src.src_data_precision, src.src_data_scale, src.src_nullable,
           tgt.tgt_col_name, tgt.tgt_data_type, tgt.tgt_data_len, tgt.tgt_data_precision, tgt.tgt_data_scale, tgt.tgt_nullable
      from src
      left outer join tgt
        on (
            src.src_col_name = tgt.tgt_col_name
           )
  )
  select *
    from (
          select case
                  when tgt_data_type != src_data_type or tgt_data_len != src_data_len or tgt_data_precision != src_data_precision or tgt_data_scale != src_data_scale or src_nullable != tgt_nullable
                    then 'alter table ' || tgt_table_name || ' modify ' || tgt_col_name || ' ' || src_data_type || ' (' ||
                    case when src_data_type in ('DATE') then null
                         else
                              case
                                when src_data_type in ('VARCHAR', 'VARCHAR2')
                                  then nvl(to_char(src_data_len), ' ') || ') '
                                else  decode(nvl(src_data_precision, -1), -1, null, nvl(to_char(src_data_precision), ' ') || ', ' || nvl(to_char(src_data_scale), ' ') || ')')
                              end
                    end
                    || decode(src_nullable, 'NO', ' NOT NULL', ' DEFAULT NULL')
                  when tgt_col_name is null
                    then 'alter table ' || tgt_table_name || ' add ' || src_col_name || ' ' || src_data_type ||
                    case when src_data_type in ('DATE') then null
                         else
                              case
                                when src_data_type in ('VARCHAR', 'VARCHAR2')
                                  then nvl(to_char(src_data_len), ' ') || ') '
                                else  decode(nvl(src_data_precision, -1), -1, null, nvl(to_char(src_data_precision), ' ') || ', ' || nvl(to_char(src_data_scale), ' ') || ')')
                              end
                    end
                    || decode(src_nullable, 'NO', ' NOT NULL', ' DEFAULT NULL')
                 end alter_statement
            from col_details
          )
  where alter_statement is not null;
  

  Erhan_toronto wrote:

  2. when I run below under user sarigul and erhan I get the result as OWNER, TABLE_NAME, COLUMN_NAME DATA_TYPE... I have a link between two users. They have access to two tables.

  • Select * from all_tab_columns

  where owner = 'erhan' and table_name = "TEST_SOURCE."

  • Select * from all_tab_columns

  where owner = 'sarigul' and table_name = "TEST_TARGET."

  Alright. This means that you both users are on the same database. Only change, you will have to do in the above query is so change user_tab_columns to all_tab_columns and add the OWNER predicate respectively with the clause.