Create cursor from another cursor

Hello,
How do I create a cursor from the values of another cursor ?
For Example,
cursor c1
select x, y from table 1;
cursor c2
select c1.x, c1.y, table 2.z
from table 2
where y := c1.y
I get errors when I do this way. Can somebody help me out on this.
Thanks
Raj

In this particular example, it's probably easiest to declare a single cursor that contains a join, i.e.
cursor c1
SELECT a.x, a.y, b.z
FROM table1 a,
table2 b
WHERE a.y = b.yIf you really want to create the two cursors, though, you have to make sure that the first cursor is visible to the creation statement of the second. For example,
for c1 in (select x, y from table1)
loop
for c2 in (select c1.x, c1.y, b.z from table2 b where b.y = c1.y)
loop
end loop;
end loop;If you need more help, quoting the exact error an providing a snippet of the code you're using would be greatly helpful.
Justin

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Hi all,
I apologize if the answer to this is somewhere...I've been looking on the web for sometime and can't find an answer to the following problem. I have a Significant Events database that contains network based issues and problems. As problems are detected on the network an SE is issued and published. As the SE records are updated, NEW records are entered into the table and "linked" back to the original. Each update results in a new row. Thus, an SE with two updates would have a total of 3 lines. When the SE gets closed (set the column CLOSED to SYSDATE), only the "original" SE is closed, any updates are left open...aka, the CLOSED column is left null.
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My initial approach was within a PL/SQL procedure, I have an SQL statement that returns the SE originals. Once in that cursor I need to do the following:
- Attempt to fetch any linked SE rows.
- if no rows then
- add the original to the REF CURSOR.
- else
- find latest SE update
- add latest SE update to REF CURSOR.
- end if
My Question is : How do I manually "add" a row to a REF CURSOR?
If this is not possible, is there a way to populate a REF CURSOR from maybe another construct like:
TYPE ian_se_record is RECORD (
se_id number
,linked_se_id number
,submitted date
,updated date
,closed date
,segroup varchar2(150)
,incident_start_time varchar2(150)
,business_units_affected varchar2(150)
,officenum varchar2(1500)
,sedetails varchar2(4000)
TYPE ian_se_table is table of ian_se_record index by binary_integer;
With the above construct I could:
- Fill ian_se_table with the process described above.
- And finally select off ian_se_table into the REF CURSOR?
Any help would be greatly appreciated,
adym

Hi michaels,
I've put your solution in place, but can't seem to get it to run. The two types were moved out of the package and into real types as you said. Here's the function, for brevity, I've remove some of the less important code:
function ian_se_fetch return sys_refcursor
is
    p_csr_events            sys_refcursor;
    cursor csr_items is
        select
             se_id
    ...removed for brevity...
    /* END : csr_items */
    ian_se_row     ian_se_record;
    ian_se_tbl     ian_se_table;
    l_lng_index    number;
    l_lng_linked   number;
    l_lng_id       number;
begin
     * OPEN : Open the main cursor of originals...
    for the_item in csr_items loop
         * CHECK : Check for any updates to the original...
        l_lng_linked := 0;
        select count(*)
        into l_lng_linked
        from sig_se_t src
        where src.linked_se_id = the_item.se_id;
        l_lng_id := 0;    /* reset the se-id    */
        /* SE original...no linked records yet.    */
        if ( l_lng_linked = 0 ) then
            l_lng_id := the_item.se_id;
        /* SE updates...one or more updates are present.    */
        else
            begin
                select
                     se_id
                into l_lng_id
                from sig_se_t src
                where src.linked_se_id = the_item.se_id
                  and rownum = 1
                order by updated desc; /* latest update    */
            exception
                when too_many_rows then
                    l_lng_id := the_item.se_id;
                when others then
                    l_lng_id := 0;
            end;
        end if;
        if ( l_lng_id != 0 ) then
            select
                 se_id
                ,linked_se_id
                ,submitted
                ,updated
                ,closed
                ,segroup
                ,incident_start_time
                ,business_units_affected
                ,officenum || decode( nvl(impact,'1')
                                  ,'1',''
                                  ,decode(impact
                                      ,'NA', ''
                                      ,':' || impact
                              )                           impact
                ,sedetails
            into ian_se_row.se_id
                ,ian_se_row.linked_se_id
                ,ian_se_row.submitted
                ,ian_se_row.updated
                ,ian_se_row.closed
                ,ian_se_row.segroup
                ,ian_se_row.incident_start_time
                ,ian_se_row.business_units_affected
                ,ian_se_row.officenum
                ,ian_se_row.sedetails
            from sig_se_t src
            where src.se_id = l_lng_id;
            l_lng_index := nvl(ian_se_tbl.last,0)+1;
            ian_se_tbl(l_lng_index).se_id                   := ian_se_row.se_id;
            ian_se_tbl(l_lng_index).linked_se_id            := ian_se_row.linked_se_id;
            ian_se_tbl(l_lng_index).submitted               := ian_se_row.submitted;
            ian_se_tbl(l_lng_index).updated                 := ian_se_row.updated;
            ian_se_tbl(l_lng_index).closed                  := ian_se_row.closed;
            ian_se_tbl(l_lng_index).segroup                 := ian_se_row.segroup;
            ian_se_tbl(l_lng_index).incident_start_time     := ian_se_row.incident_start_time;
            ian_se_tbl(l_lng_index).business_units_affected := ian_se_row.business_units_affected;
            ian_se_tbl(l_lng_index).officenum               := ian_se_row.officenum;
            ian_se_tbl(l_lng_index).sedetails               := ian_se_row.sedetails;
        end if;
    end loop;
     * REF CURSOR : Open the ref cursor on the dataset...
    if ( nvl(ian_se_tbl.last,0) = 0 ) then
        p_csr_events := null;
    else
        open p_csr_events for
        select *
        from table (cast ( ian_se_tbl as ian_se_table ));
    end if;
    return p_csr_events;
end;Here's the test. I keep getting the same error ORA-06530:
SQL> variable v refcursor;
SQL> exec :v:=pkg_ian.ian_se_fetch;
BEGIN :v:=pkg_ian.ian_se_fetch; END;
ERROR at line 1:
ORA-06530: Reference to uninitialized composite
ORA-06512: at "N0002501.PKG_IAN", line 131
ORA-06512: at line 1
SQL> print v
ERROR:
ORA-24338: statement handle not executedOther things I tried:
- The ian_se_fetch() function was a procedure using an in out parameter...same error.
- Wrote a small anonymous block and tried to LOOP/FETCH. Same ORA-06530 error.
P.S. Line 131 of pkg_ian is the SELECT ... INTO ian_se_row.se_id, ...
Any help would be greatly appreciated,
tia,
adym
Message was edited by:
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I can't create table from another table?

Hi everyone!
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xi`tin wrote:
Hi everyone!
I have a problem that I don't known the reason why?
I'm using Oracle version 8i and I want to create a table from another table, such as:You realize, of course, that 8i is completely out of support .... Is your OS and hardware just as old as your rdbms software, or is it only the rdbms that your company refuses to upgrade?
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This creates the table, but the constraints are not copied over.
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Anand

>
I tried that, but the constraint names are posing a problem. And unfortunately our constraints are not named in a standard, so am finding it difficult to replace them.
Was just wondering if there were any simpler approach to this.
>
No - there isn't.
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Hello
I’m new in Oracle, and I have the following problem:
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create or replace
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961449 wrote:
Hello
I’m new in Oracle, and I have the following problem:
I have an cursor in a package defined like that:
create or replace
PACKAGE "TestPACKAGE" AS
cursor DOWNLOAD_CURSOR is select A.* from Table1 A, Table2 B
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In reality there is more than one package with different cursors. I want to use that DOWNLOAD_CURSOR in a store procedure, function or another package, to return it to the client as a ref cursor.
Something likes that:
create or replace
procedure aa_test (retCURSOR OUT sys_refcursor) is
begin
retCURSOR := TestPACKAGE.DOWNLOAD_CURSOR;
end;
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See...
SQL> ed
Wrote file afiedt.buf
1 declare
2    v_rc sys_refcursor;
3    cursor cur_emp is select * from emp;
4 begin
5    open v_rc for cur_emp;
6* end;
SQL> /
open v_rc for cur_emp;
ERROR at line 5:
ORA-06550: line 5, column 17:
PLS-00320: the declaration of the type of this expression is incomplete or malformed
ORA-06550: line 5, column 3:
PL/SQL: Statement ignored

How to create table from ref cursor

I have a proc that returns a ref cursor, whats the simplest way to create a table based on the return of the ref cursor?
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type rc is ref cursor;
p_data rc;
begin
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end;
thanks.
edit: sorry. typed this wrong first time, should be right now

961469 wrote:
I have a proc that returns a ref cursor, whats the simplest way to create a table based on the return of the ref cursor?Not to do it...
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A cursor is essentially a program. Executable code that was compiled from a SQL source code program.
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An INSERT cursor is a "write" program. You pass data to it (process called binding, via bind variables). You then execute the program. It writes the data it received (can be bulk data via a bulk bind) to table.
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I want to know whether is there any way where we can create a table using another table and have the partitions of the new table to be exactly like the used table.
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FETCH CURSOR_ABC INTO V_VARIABLE1;
EXIT WHEN CURSOR_ABC%NOTFOUND;
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CURSOR_XYZ IS select...............;
BEGIN
OPEN CURSOR_XYZ;
LOOP
FETCH CURSOR_XYZ INTO V_VARIABLE2;
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Gul wrote:
i have a program like this
DECLARE
V_VARIABLE1 VARCHAR2(10);
CURSOR_ABC IS select...............;
BEGIN
OPEN CURSOR_ABC;
LOOP
FETCH CURSOR_ABC INTO V_VARIABLE1;
EXIT WHEN CURSOR_ABC%NOTFOUND;
WHAT IF I WANT TO INSERT ANOTHER SAME KINDA CURSOR LOOP HERE LIKE*
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BEGIN
OPEN CURSOR_XYZ;
LOOP
FETCH CURSOR_XYZ INTO V_VARIABLE2;
EXIT WHEN CURSOR_XYZ%NOTFOUND;
END LOOP;
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Create script from another script using PROMPT

Oracle 11
Instead of having to link to another database I want to create 2 scripts that are executed from a shell script and run them separately. Script1 run in Database1 would create Script 2 by using PROMPT to create the second script while grabbing a date from database1 to pass into database2. I almost have it but the problem is ... Script2 uses COPY FROM and I have to put a "-" at the end of each line which the PROMPT takes as a literal instead of as part of the output.
SCRIPT1:
set pagesize 0
set trimspool on
set linesize 2000
set echo off
set verify off
set feedback off
set sqlblanklines on
spool /home/michelle/sql_scripts/sl_dtc_copy2.sql
PROMPT whenever sqlerror exit sql.sqlcode rollback
PROMPT SET ARRAYSIZE 5000
PROMPT SET COPYCOMMIT 20
PROMPT set linesize 4000
PROMPT
PROMPT COPY FROM {username}/{pswd}@{DB2} TO {username}/{pswd}@{DB2}
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PROMPT col1, col2, col3
PROMPT FROM dual
PROMPT WHERE veh_data_elements_cd = 'ODO_READ'
PROMPT and       dh.data_collected_timstm >=
select trunc(sysdate)-7 from dual;
PROMPT and       substr(vdh.vin,10,1) in ('A','B','C','D')
PROMPT /
PROMPT spool off
PROMPT exit
spool off
exitSCRIPT2 NOW:
whenever sqlerror exit sql.sqlcode rollback
SET ARRAYSIZE 5000
SET COPYCOMMIT 20
set linesize 4000
COPY FROM {username}/{pswd}@{DB2} TO {username}/{pswd}@{DB2}
CREATE SL_DTC_TMP USING SELECT DISTINCT
col1, col2, col3
FROM dual
WHERE veh_data_elements_cd = 'ODO_READ'
and       dh.data_collected_timstm >=
12-AUG-11
and       substr(vdh.vin,10,1) in ('A','B','C','D')
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exitSCRIPT2 HOW IT NEEDS TO BE:
--- A [SPACE] AND A [-] at the end of each line
--- THE DATE NEEDS TO HAVE SINGLE QUOTES AND PREFERABLY AT THE END OF THE PREVIOUS LINE
whenever sqlerror exit sql.sqlcode rollback
SET ARRAYSIZE 5000
SET COPYCOMMIT 20
set linesize 4000
COPY FROM {username}/{pswd}@{DB2} TO {username}/{pswd}@{DB2} -
CREATE SL_DTC_TMP USING SELECT DISTINCT -
col1, col2, col3 -
FROM dual -
WHERE veh_data_elements_cd = 'ODO_READ' -
and       dh.data_collected_timstm >= '12-AUG-11' -
and       substr(vdh.vin,10,1) in ('A','B','C','D')
spool off
exitTHANK YOU

Try
select 'whenever sqlerror exit sql.sqlcode rollback'                    ||chr(10)||
       'SET ARRAYSIZE 5000'                                             ||chr(10)||
       'SET COPYCOMMIT 20'                                              ||chr(10)||
       'set linesize 4000'                                              ||chr(10)||
       ' '                                                              ||chr(10)||
       'COPY FROM {username}/{pswd}@{DB2} TO {username}/{pswd}@{DB2} -'||chr(10)||
       'CREATE SL_DTC_TMP USING SELECT DISTINCT -'                      ||chr(10)||
       'col1, col2, col3 -'                                             ||chr(10)||
       'FROM dual -'                                                    ||chr(10)||
       'WHERE veh_data_elements_cd = ''ODO_READ'' -'                    ||chr(10)||
       'and       dh.data_collected_timstm >= ''12-AUG-11'' -'          ||chr(10)||
       'and       substr(vdh.vin,10,1) in (''A'',''B'',''C'',''D'')'
       as Script
from dual

Create cursor from another cursor

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