FUNCTION/FORMULA to randomly sort, then select from rows
Hi! Using Numbers more now but still quite new. VERY used to Apple way and familiar with Automator, at least capable of copy/pasting an Applescript, and somewhat versed in UNIX. Basically need to shuffle all the entries in say "Column A" and maybe "B", and then pick from them and 'print' to a file or some other field or table. At the very least even being able to just make the couple thousand names being entered in to their-own field randomly-sorted would be a BIG help. Just in case I'm not being clear, instead of just sorting ascending or descending. Thank you!!!
Message was edited by: jon215
Hi jon,
Numbers will only sort in ascending or descending order, and sorts whole rows (not individual columns) on the basis of the contents of one or more columns. It will sort the entire table (excepting any header and footer rows), or will sort selected rows.
If you want to do a random sort of a column of names, you can do it by adding a column, entering this formula into all cells in the column (except header and footer cells), and sorting on the new column.
=RAND()
The formula generates a random number between 0 and 1. When the table is sorted, the sort will place those numbers in ascending or descending order (as you choose), but will then immediately calculate a new set of random numbers.
If you just need to pick a random name form the list, you can use OFFSET and RANDBETWEEN.
If the names are in column A, starting at A2, this formula, placed elsewhere on the same table, will return a random name from the list:
=OFFSET($A$1,RANDBETWEEN(1,ROWS($A)-1),0)
Regards,
Barry
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Is select from view faster then select from table..???
Hello Gurus,
I want to query some data from two tables, both of table have many columns (attributes) and many rows...
I use several where clauses to retrieve data from those tables..
witch one is faster, I create a view or I just "select" from those tables???
Regards.
Nia...riedelme wrote:
3360 wrote:
riedelme wrote:
Selecting through a view almost never helps performance and frequently hurts.Views do not affect performance.
Views are simply queries and like queries there are fast and slow ones.I disagree.
First of all, to use a view you are executing a query to get a result set, then accessing the data from that result set - a built-in extra step to perform to get data.First of all that entire explanation of how views work is not correct. The optimizer will rewrite the query to make the view go away if possible.
SQL> create or replace view v as select * from dual;
View created.
SQL> explain plan for select * from dual where dummy = 'X';
Explained.
SQL> select * from table(dbms_xplan.display);
PLAN_TABLE_OUTPUT
Plan hash value: 272002086
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 2 | 2 (0)| 00:00:01 |
|* 1 | TABLE ACCESS FULL| DUAL | 1 | 2 | 2 (0)| 00:00:01 |
Predicate Information (identified by operation id):
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13 rows selected.
SQL> explain plan for select * from v where dummy = 'X';
Explained.
SQL> select * from table(dbms_xplan.display);
PLAN_TABLE_OUTPUT
Plan hash value: 272002086
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 2 | 2 (0)| 00:00:01 |
|* 1 | TABLE ACCESS FULL| DUAL | 1 | 2 | 2 (0)| 00:00:01 |
Predicate Information (identified by operation id):
1 - filter("DUMMY"='X')
13 rows selected.Exactly the same.
>
Second, when accessing the data from the view the result sets don't have indexes for fast lookups and efficient joins on later steps.This is also known as just making stuff up and is not how the database works. care to share any references at all for any of this?
>
Third, the systems I've seen that use views extensively - I am looking at one now - tend to perform joins on views using the same tables with the same data over and over. This is a design issue and not specifically a problem with views but they lend themselves to this misuse much too easilyCorrect as I said a view is just a query, and just like queries there are good fast views and bad slow views
>
I'll concede that the problem is not specifically with views themselves but as I just said they lend themselves to misuse. Tuning views of views and views joined to views is difficultYes, queries can be misused as can almost all SQL functions and functionality.
As I said - Views are simply queries and like queries there are fast and slow ones.
Nothing that you have posted that is accurate changes that. -
How to use the same function in a column so it varies from row to row.
In a spreadsheet, I have four columns: item, quantity, price, total cost.
How can I write a function (product) for the entire "total cost" column that automatically will place the correct "total cost" for the item in that row; i.e.: =product(quantity,price)
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If quantity is in column C and price in column D,
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Yvan KOENIG (from FRANCE samedi 4 juillet 2009 11:31:06) -
Selecting from a function that returns a sys refcursor or an alternative
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Create a view and then query it.
Create a function and return resultset
If I go the first way a simple query like the following takes more than 20 seconds:
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SELECT * FROM FUNCTION_1(12132323232).
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No - you don't 'know that' because it isn't true. Just check the explain plan for yourself. Oracle can still use any appropriate indexes so that only the rows needed are returned.
So my ultimate question is if it's somehow possible to select from the resultset that is returned from a function like this:
SELECT * FROM FUNCTION_1(12132323232).
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'SELECT * FROM TABLE(FUNCTION_1(12132323232)).
-- type to match emp record
create or replace type emp_scalar_type as object
(EMPNO NUMBER(4) ,
ENAME VARCHAR2(10),
JOB VARCHAR2(9),
MGR NUMBER(4),
HIREDATE DATE,
SAL NUMBER(7, 2),
COMM NUMBER(7, 2),
DEPTNO NUMBER(2)
-- table of emp records
create or replace type emp_table_type as table of emp_scalar_type
-- pipelined function
create or replace function get_emp( p_deptno in number )
return emp_table_type
PIPELINED
as
TYPE EmpCurTyp IS REF CURSOR RETURN emp%ROWTYPE;
emp_cv EmpCurTyp;
l_rec emp%rowtype;
begin
open emp_cv for select * from emp where deptno = p_deptno;
loop
fetch emp_cv into l_rec;
exit when (emp_cv%notfound);
pipe row( emp_scalar_type( l_rec.empno, LOWER(l_rec.ename),
l_rec.job, l_rec.mgr, l_rec.hiredate, l_rec.sal, l_rec.comm, l_rec.deptno ) );
end loop;
return;
end;
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Hi
In InterBase it is possible to create a Stored Procedure with some input parameters and then select from it.
for example:
select * from my_stored_procedure (my_parameter);
Is it possile to do something similar in Oracle 8i?
Where to find examples on creating and using stored procedures like this?
I am new to Oracle and have been browsing documentation CD and otn.oracle.com websites, however is seemes like finding a needle in a haystack.
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Thanks,
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create or replace package p
as
type t_rc is ref cursor; -- weak ref cursor
function f( cond in number ) return t_rc;
end;
create or replace package body p
as
function f ( cond in number ) return t_rc
is
rv t_rc;
begin
open rv for 'select * from some_table where id = :cond' using in cond;
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return rv;
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end;
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declare
c p.t_rc;
r some_table%rowtype;
begin
c := p.f(100);
loop
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example:
If you select
View > Sort by > select: 'From' and 'Descending' and 'Group by Sort'
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Changing the sort selection from Descending to Ascending will put the names sorted A at top, but the dates per person will be oldest at top.
As I prefer the emails to be in date newset on top, it means I have to select to have the order of 'From' with A at bottom; depends on your preference.
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If you start by selecting: 'From' and 'Descending' and 'Group by Sort'
then change sort to 'Ascending', you may notice no change until you hover the mouse over the entire list, this is a known bug.
Please feel free to Vote for this bug, you may need to logon / tregister.
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How to sort - not columns - but rows - in 3.01?
Hi Sune,
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Select rows 11-14. Click and *hold* on any Row Reference Tab. You will see the selected rows appear to 'lift'. Drag those rows away from Table 1 to a blank part of the 'canvas':
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Then select all rows of Table 2, and Copy.
Click on Table 1. Select the colour filled row where you want to insert (row showing 23 Jun 2013 in this example).
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Show the checkbox as selected by selecting the row.
Hi friends,
I have a table. It is possible to select multiple rows, after selecting rows, I get the selected
rows in this table from the context. Now my question is, how can i cause that by selecting a row
the checkbox on this row will be also selected (shown as checked)?
So this is the coding in the eventhandlermethod on onselect property of the table:
METHOD onactionmark_cb .
DATA lo_nd_table_data TYPE REF TO if_wd_context_node.
DATA lo_el_table_data TYPE REF TO if_wd_context_element.
DATA ls_table_data TYPE wd_this->element_table_data.
DATA lt_table_data TYPE wd_this->elements_table_data.
DATA lt_set TYPE wdr_context_element_set.
DATA lv_idx TYPE i.
navigate from <CONTEXT> to <TABLE_DATA> via lead selection
lo_nd_table_data = wd_context->get_child_node( name = wd_this->wdctx_table_data ).
This would now contain the references of all the selected rows
CALL METHOD lo_nd_table_data->get_selected_elements
RECEIVING
set = lt_set.
LOOP AT lt_set INTO lo_el_table_data.
" Use the references to get the exact row data
CALL METHOD lo_el_table_data->get_static_attributes
IMPORTING
static_attributes = ls_table_data.
APPEND ls_table_data TO lt_table_data.
CLEAR ls_table_data.
ENDLOOP.
mark/shhow the checkboxes checkd in the selected rows
ENDMETHOD.
Thank you for any help
Haleh
Edited by: Haleh Mir Ashrafi on Nov 9, 2008 6:29 PMHi Haleh,
I tried replicating your requirement and have written below the exact working code for the same. I will try to explain you my component so that you can get to understand its functionality. I have 2 tables & 1 input field in my view. The user enters a customer number in the input field and presses on a button. This leads to the corresponding sales orders filled into the 1st table ui element. The user then selects multiple rows from this table and presses on a toolbar button to copy these selected rows to the 2nd table. Within the same event I also set the checkbox for the rows selected by the user in the 1st tables row to selected. Hope that this would meet your requirement. On pressing the button the system would check if the checkbox is enabled & then mark the selected rows checkboxes as selected and would also copy the rows to the 2nd table. If the checkbox is disabled then the system would neither set it as checked nor copy it to the 2nd table. The rest of the checkboxes for the rows which weren't selected by the user remain as unchecked.
METHOD onactioncopy_selected_rows .
DATA: wd_node TYPE REF TO if_wd_context_node,
ls_node1 TYPE ig_componentcontroller=>element_node1,
lt_node1 TYPE ig_componentcontroller=>elements_node1,
wa_temp TYPE REF TO if_wd_context_element,
lt_temp TYPE wdr_context_element_set.
wd_node = wd_context->get_child_node( name = 'NODE1' ).
" Get all the context element information for the rows selected by the user
CALL METHOD wd_node->get_selected_elements
RECEIVING
set = lt_temp.
" Just get the reference of the 2nd table to which you want to copy selected rows
wd_node = wd_context->get_child_node( name = 'NODE2' ).
LOOP AT lt_temp INTO wa_temp.
CALL METHOD wa_temp->get_static_attributes
IMPORTING
static_attributes = ls_node1.
" Check if the checkbox is disabled/enabled. The "enabled" property of the checkbox
" is bound to the boolean context attribute by name ENABLED
IF ls_node1-enabled EQ abap_true.
wa_temp->set_attribute( EXPORTING name = 'CHECKBOX'
value = abap_true ).
APPEND ls_node1 TO lt_node1.
CLEAR ls_node1.
ENDIF.
ENDLOOP.
" Bind the rows selected by the user to the 2nd table ui element
wd_node->bind_table( new_items = lt_node1 ).
ENDMETHOD.
I have checked your code where you say like:
IF elem_test->is_selected( ) = abap_true AND stru_test-enabled = abap_false.
You had earlier fetched the entire elements list using the get_elements method of if_wd_context_node & then checking each 1 of them individually to determine whether it was selected or not using the method id_selected. You can directly get only the elements which were selected by the user by using the method get_selected_elements instead. So now you will only have to check whether the checkbox field in that particular row is disabled/enabled. You now don't have to combine 2 conditions using AND & check them within the loop.
Regards,
Uday -
For example, I have a 2D array with 46 rows and 400 columns. I would like to randomly select 46 data rows from the 2D array. By doing the random selection it means that not all individual 46 rows will be selected some rows may appear more than once as there may be some duplicates or triplicates in the random selection. The importan thing is that we will have randomly selected 46 rows of data (no matter that some rows appear more than once). Then I would like to subset these randomly selected 46 data rows (some which will be duplicated, or triplicated, etc.) and then also find and subset the rows that were not selected. Does this make sense? Then i would like to do this say 10 times for this data set. So that then I will have 2 by 10 data sets: the first 10 each with 46 rows and the other 10 with n rows depending on how many WERE NOT randomly selected. i hope that my explanation is clear. I am relatively new to Labview. It is really great so I am getting better! If anyone can help me with this problems it will be great. RVR
Start by generating randon #s between 0 and 45. Run a for loop X times and in it use the random function, multiply the result by X and round down (-infinity). You can make this into a subVI, which you can reuse later. In the same loop, or in a different one, use Index Array to extract the rows which were selected (wiring the result out of the loop with auto indexing causes it to be rebuilt into a 2D array).
One possible solution for the second part would be to go over the array of randomly generated numbers in a for loop and use Search 1D Array to find each of the numbers (i). If you get -1, it means the row wasn't selected and you can extract it.
I hope this puts you on the right path. If not, don't be afraid to ask more.
To learn more about LV, I suggest you read the LabVIEW user manual. Also, try searching this site and google for LabVIEW tutorials. Here and here are a couple you can start with. You can also contact your local NI office and join one of their courses.
In addition, I suggest you read the LabVIEW style guide.
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SELECT from table vs. CALL FUNCTION
Hello,
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*--Serdar -
How to get result of Select from stored function.
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The one value that you return can be a record, with many columns, such as a ROWTYPE, or a TYPE that you define.
You can return an XMLTYPE that has whatever elements you want.
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In very special circumstance, you might consider returning a string that is a delimited list of values, such as '7639,SMITH,,17-DEC-1980'.
Someoneelse has a good point.
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"I have this table ...
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Select from local (tmp) Table in Function - Table not found
Hi,
I want to create a cursor which selects from a Table which does not exist in database.
I create this table as local table (how is it called? nested table?).
Not shown in the code but I want to fill this local table later.
After filled my cursor is going to use this filled table.
When try to run I get the error Table or View does not exist at the "FROM TempTab_var T1;" of my cursor.
This is my simplified code:
CREATE OR REPLACE FUNCTION PC_RL_MTA_PMT
RETURN PC_RL_MTA_TYPE_PMT
IS
result_out PC_RL_MTA_TYPE_PMT;
TYPE TempTab_record_type IS RECORD
(ID int);
TYPE TempTab_type IS TABLE OF TempTab_record_type
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TempTab_var TempTab_type;
CURSOR TempCursor3_var IS
SELECT ID AS ID_var
FROM TempTab_var T1;
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SQL> CREATE OR REPLACE TYPE num_descript AS OBJECT(num number, descript varchar2(30))
2 /
Type created.
SQL> CREATE OR REPLACE TYPE tbl_num_descript AS TABLE OF num_descript
2 /
Type created.
SQL> CREATE OR REPLACE PACKAGE reftest AS
2 FUNCTION pipedata(p_choice number) RETURN tbl_num_descript PIPELINED;
3 END;
4 /
Package created.
SQL> CREATE OR REPLACE PACKAGE BODY reftest AS
2 FUNCTION pipedata(p_choice number) RETURN tbl_num_descript PIPELINED IS
3 v_obj num_descript := num_descript(NULL,NULL);
4 v_rc sys_refcursor;
5 BEGIN
6 IF p_choice = 1 THEN
7 OPEN v_rc FOR SELECT empno as num, ename as descript FROM emp;
8 ELSIF p_choice = 2 THEN
9 OPEN v_rc FOR SELECT deptno as num, dname as descript FROM dept;
10 END IF;
11 LOOP
12 FETCH v_rc INTO v_obj.num, v_obj.descript;
13 EXIT WHEN v_rc%NOTFOUND;
14 PIPE ROW(v_obj);
15 END LOOP;
16 CLOSE v_rc;
17 RETURN;
18 END;
19 END;
20 /
Package body created.
SQL> select * from table(reftest.pipedata(1));
NUM DESCRIPT
7369 SMITH
7499 ALLEN
7521 WARD
7566 JONES
7654 MARTIN
7698 BLAKE
7782 CLARK
7788 SCOTT
7839 KING
7844 TURNER
7876 ADAMS
7900 JAMES
7902 FORD
7934 MILLER
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10 ACCOUNTING
20 RESEARCH
30 SALES
40 OPERATIONS -
Pipelined function, select from table t1 or t2 depending on user's choise
Hi all,
My need is to select data from table t1 or t2 depending on user's choise using pipelined function. You can find my first guess below. Maybe someone can help me to save some code, I mean getting the same result without writing "PIPE ROW" twice.
FUNCTION fn_indicators (p_datbeg date, p_datend date, p_indicatorid number) return cl_risk_act pipelined IS
v_obj cl_user_type;
BEGIN
case when p_indicatorid = 1 then
FOR e IN (
select trunc(sysdate-1) as adate, 0 as cid, 0 as indicatorid, '0' as code, '0' as indicatorname, 0 as value, 0 as cnt, '0' as cname from dual
LOOP
v_obj.adate := e.adate;
v_obj.cid := e.cid;
v_obj.indicatorid := e.indicatorid;
v_obj.code := e.code;
v_obj.indicatorname := e.indicatorname;
v_obj.value := e.value;
v_obj.cnt := e.cnt;
v_obj.cname := e.cname;
PIPE ROW (v_obj);
END LOOP;
when p_indicatorid = 2 then
FOR e IN (
select trunc(sysdate-2) as adate, 1 as cid, 1 as indicatorid, '1' as code, '1' as indicatorname, 1 as value, 1 as cnt, '1' as cname from dual
LOOP
v_obj.adate := e.adate;
v_obj.cid := e.cid;
v_obj.indicatorid := e.indicatorid;
v_obj.code := e.code;
v_obj.indicatorname := e.indicatorname;
v_obj.value := e.value;
v_obj.cnt := e.cnt;
v_obj.cname := e.cname;
PIPE ROW (v_obj);
END LOOP;
end case;
RETURN;
end;marco wrote:
Justin,
In my real code table real_t1 or pipelinedfn_t2 is joined to other tables, so surely real code is bigger than sample one. It is not wise to keep code twise with only one table name changed. I think about dynamic sql to choose from two tables:
with t1 as
(select * from real_t1
t2 as
(select * from pipelinedfn_t2
t3 as (
[dynamic selection of t1 or t2 depending on user's choise]
select * from t3, t... where...I don't know correct syntax.
Any ideas?
>Justin,
In my real code table real_t1 or pipelinedfn_t2 is joined to other tables, so surely real code is bigger than sample one. It is not wise to keep code twise with only one table name changed. I think about dynamic sql to choose from two tables:
with t1 as
(select * from real_t1
t2 as
(select * from pipelinedfn_t2
t3 as (
[dynamic selection of t1 or t2 depending on user's choise]
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Any ideas?
Dynamic code does NOT scale.
Making the tradeoff of smaller code size for reduced performance is not one that I would make.
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Pending sales order weight and value
Dear all, Please guide me that how ill get pending sales order weight and net value for all line items. I used VBUK for pending sales order where lfstk = ''a' or 'b' and vbtyp = 'c'. for line item details i used VBUP where LFSTA = ''a' or 'b'. for fu
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Value converting to upper case
Hi, There is a table control, but when i am taking a value from the table in PAI of my screen, the value gets converted to upper case, can any one suggest me what would be happening. Is there any way to control this? Thanks in Advance, kushagra sharm
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How to copy error message text , that is on JOptionPane window ??