What happens u0093Updateu0094 command is used without where clause ?

Hi
What happens Update command is used without where clause ?
thank you

Hi subash,
chk this help
UPDATE dbtab SET f1 ... fn. or
UPDATE (dbtabname) SET f1 ... fn.
Extras:
1. ... WHERE condition
2. ... CLIENT SPECIFIED
3. ... CONNECTION con
Effect
Updates values in a database table. <b>If there is no WHERE clause, all lines (in the current client) are updated.</b> If a WHERE condition is specified, only thoserecords which satisfy the WHERE condition are updated.

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How do you use 3 Where Clauses in a query

Hi, i am trying to figure out how to use 3 Where Clauses in a Query where 2 of the Where Clauses uses a Sub query.
Display the OrderID of all orders that where placed after all orders placed by “Bottom-Dollar Markets”.
Order the result by OrderID in ascending order.
First WHERE clause checks for OrderDate and uses a sub query with ALL keyword.
Second WHERE clause use equals and sub query.
Third WHERE clause uses equal and company name.
This is what i have so far but i am pretty confused on how to do this.
My Code for NorthWind:
Select OrderID
From Orders o
Where o.OrderID IN (Select OrderDate From Orders Where Orders.OrderID > ALL
(Select CompanyName From Customers Where CompanyName = 'Bottom-Dollar Markets'));
The book shows how to use the ALL Keyword but not in a Sub query with Multiple Where Clauses.
Select VenderName, InvoiceNumber, InvoiceTotal
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CompanyName
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FROM orders o
INNER JOIN customers c
ON c.customerid =
o.customerid
WHERE
c.companyname = 'Bottom-Dollar Markets'));
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Regarding Select without Where clause

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we have below code for F4HELP on invoice input field.
you can see Select statement used without Where condition to fetch records from Ztable.
and deleting the duplicating records.
SCI error says,"Large table : it has no where condition. /No field of a table index in WHERE condition.
Is this potential problem?
How to handle this generally? does where condtion is must to use in Select statement.?
AT SELECTION-SCREEN ON VALUE-REQUEST FOR S_ZIVCNO-LOW.
* Search help setting of uFF62Invoice numberuFF63
PERFORM F_F4HELP_RSTYP CHANGING S_ZIVCNO-LOW.
FORM F_F4HELP_RSTYP CHANGING C_V_INVCNO TYPE ZGTSDE_ZIVCNO."Invoice number
DATA:
*   Work area for Return the selected value
    WL_F4RETURN TYPE DDSHRETVAL,
*   Internal table for Return the selected value
    TL_F4RETURN TYPE STANDARD TABLE OF DDSHRETVAL,
*   Internal table for Processing result
    TL_INVOICE   TYPE TABLE OF TYP_INVOICE.
SELECT ZIVCNO
FROM   ZGTSDT01
INTO   TABLE TL_INVOICE.
CHECK TL_INVOICE[] IS NOT INITIAL.
DELETE ADJACENT DUPLICATES FROM TL_INVOICE.
* Search help is started
CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
    EXPORTING
      RETFIELD        = CG_FIELD_INVCNO   " Packing No
      VALUE_ORG       = CG_VALUE_S       " Value return
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      RETURN_TAB      = TL_F4RETURN      " Return the selected value
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Since your F4 help on your selection-screen is independent, create a custom search help as suggested by Keshav.
As a suggestion Instead of,
SELECT ZIVCNO
FROM   ZGTSDT01
INTO   TABLE TL_INVOICE.
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use,
SELECT DISTINCT(ZIVCNO)
FROM   ZGTSDT01
INTO   TABLE TL_INVOICE.
BR,
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Trying to use a where clause from a table

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Partition Pruning on Interval Range Partitioned Table not happening when SYSDATE used in Where Clause

We have tables that are interval range partitioned on a DATE column, with a partition for each day - all very standard and straight out of Oracle doc.
A 3rd party application queries the tables to find number of rows based on date range that is on the column used for the partition key.
This application uses date range specified relative to current date - i.e. for last two days would be "..startdate > SYSDATE -2 " - but partition pruning does not take place and the explain plan shows that every partition is included.
By presenting the query using the date in a variable partition pruning does table place, and query obviously performs much better.
DB is 11.2.0.3 on RHEL6, and default parameters set - i.e. nothing changed that would influence optimizer behavior to something unusual.
I can't work out why this would be so. It very easy to reproduce with simple test case below.
I'd be very interested to hear any thoughts on why it is this way and whether anything can be done to permit the partition pruning to work with a query including SYSDATE as it would be difficult to get the application code changed.
Furthermore to make a case to change the code I would need an explanation of why querying using SYSDATE is not good practice, and I don't know of any such information.
1) Create simple partitioned table
CREATETABLE part_test
   (id                      NUMBER NOT NULL,
    starttime               DATE NOT NULL,
    CONSTRAINT pk_part_test PRIMARY KEY (id))
PARTITION BY RANGE (starttime) INTERVAL (NUMTODSINTERVAL(1,'day')) (PARTITION p0 VALUES LESS THAN (TO_DATE('01-01-2013','DD-MM-YYYY')));
2) Populate table 1million rows spread between 10 partitions
BEGIN
    FOR i IN 1..1000000
    LOOP
        INSERT INTO part_test (id, starttime) VALUES (i, SYSDATE - DBMS_RANDOM.value(low => 1, high => 10));
    END LOOP;
END;
EXEC dbms_stats.gather_table_stats('SUPER_CONF','PART_TEST');
3) Query the Table for data from last 2 days using SYSDATE in clause
EXPLAIN PLAN FOR
SELECT count(*)
FROM    part_test
WHERE   starttime >= SYSDATE - 2;
| Id | Operation                 | Name      | Rows | Bytes | Cost (%CPU)| Time     | Pstart| Pstop |
|   0 | SELECT STATEMENT          |           |     1 |     8 | 7895 (1)| 00:00:01 |       |       |
|   1 | SORT AGGREGATE           |           |     1 |     8 |            |          |       |       |
|   2 |   PARTITION RANGE ITERATOR|           |   111K|   867K| 7895   (1)| 00:00:01 |   KEY |1048575|
|* 3 |    TABLE ACCESS FULL      | PART_TEST |   111K|   867K| 7895   (1)| 00:00:01 |   KEY |1048575|
Predicate Information (identified by operation id):
   3 - filter("STARTTIME">=SYSDATE@!-2)
4) Now do the same query but with SYSDATE - 2 presented as a literal value.
This query returns the same answer but very different cost.
EXPLAIN PLAN FOR
SELECT count(*)
FROM part_test
WHERE starttime >= (to_date('23122013:0950','DDMMYYYY:HH24MI'))-2;
| Id | Operation                 | Name      | Rows | Bytes | Cost (%CPU)| Time     | Pstart| Pstop |
|   0 | SELECT STATEMENT          |           |     1 |     8 |   131 (0)| 00:00:01 |       |       |
|   1 | SORT AGGREGATE           |           |     1 |     8 |            |          |       |       |
|   2 |   PARTITION RANGE ITERATOR|           |   111K|   867K|   131   (0)| 00:00:01 |   356 |1048575|
|* 3 |    TABLE ACCESS FULL      | PART_TEST |   111K|   867K|   131   (0)| 00:00:01 |   356 |1048575|
Predicate Information (identified by operation id):
   3 - filter("STARTTIME">=TO_DATE(' 2013-12-21 09:50:00', 'syyyy-mm-dd hh24:mi:ss'))
thanks in anticipation
Jim

As Jonathan has already pointed out there are situations where the CBO knows that partition pruning will occur but is unable to identify those partitions at parse time. The CBO will then use a dynamic pruning which means determine the partitions to eliminate dynamically at run time. This is why you see the KEY information instead of a known partition number. This is to occur mainly when you compare a function to your partition key i.e. where partition_key = function. And SYSDATE is a function. For the other bizarre PSTOP number (1048575) see this blog
http://hourim.wordpress.com/2013/11/08/interval-partitioning-and-pstop-in-execution-plan/
Best regards
Mohamed Houri

Using a WHERE clause in APEX Tree

Hi All -
I have an hierarchical SQL query that I'm displaying as an APEX tree.
My sample app is here:
https://apex.oracle.com/pls/apex/f?p=32581:29
login: guest
pw: app_1000
workspace: leppard
I am trying to add a WHERE clause so that only nodes with the lowest level children are displayed, i.e. something like 'WHERE connect_by_isleaf = 0 OR level = 5'
The tree query with the where clause works fine in the SQL commands window, but when I add the WHERE clause to my apex tree the page no longer displays anything. Is this an issue with APEX or is there some other way to filter my results?
Thanks in advance for any suggestions,
john

Connect by occurs first, the where clause then is applied to those results, effectively cutting away in the hierarchical structure. Since apex has to build a hierarchical structure from the query it relies on the level pseudocolumn, which is butchered by applying the where clause. It's a miracle you aren't even receiving errors because I'd almost expect an incorrect json array to have been built. With no top level to start from and only level 5 or leaf nodes there is no structure to present: both apex can not put out a correct representation and not jstree either. In your query you will see your "root nodes" but it is not representable.
I'm not sure why you want to present this in a tree? Both connect_by_is_leaf and level = 5 will simply give you a list of nodes without any hierarchical structure.
The better thing to do is to use a subquery to first limit your dataset and then use that to base the tree query on, that way you don't break any of those vital columns.
Eg if you only want leaf nodes and their immediate parent you could go for something like this (quick mockup on some testdata):
with dataset as (
select node_id, parent_id
from treedata
where connect_by_isleaf = 0
connect by prior node_id = parent_id
start with parent_id = 0
dataset2 as (
select node_id, parent_id
from dataset
union all
select node_id, null parent_id
from treedata
where node_id in (select parent_id from dataset)
select level, node_id
from dataset2
connect by prior node_id = parent_id
start with parent_id is null

Group by with and without where clause

Do I need to use these two inner views to show results by group by as one line? Can I achieve the same result without typing the same select statement two times since these two SELECT statements differ only in where clause. This query is a simulation. My actual query is longer. My expectation is to make this query shorter (without inner views).
with tmp as (
select 'COMPLETE' status, 'GERMANY' country, 0 substatus FROM dual UNION ALL
select 'COMPLETE' status, 'GERMANY' country, 1 substatus FROM dual UNION ALL
select 'COMPLETE' status, 'GERMANY' country, 0 substatus FROM dual)
select v1.status, v1.country, v1.cnt01, v2.cntIncluding0 from
(select status, country, count(*) cnt01 from tmp tmp1 group by status, country) v1
JOIN
(select status, country, count(*) cntIncluding0 from tmp tmp2 where substatus=0 group by status, country) v2
on v1.status=v2.status and v1.country=v2.country;

totalnewby wrote:
Do I need to use these two inner views to show results by group by as one line? Can I achieve the same result without typing the same select statement two times since these two SELECT statements differ only in where clause. This query is a simulation. My actual query is longer. My expectation is to make this query shorter (without inner views).
with tmp as (
select 'COMPLETE' status, 'GERMANY' country, 0 substatus FROM dual UNION ALL
select 'COMPLETE' status, 'GERMANY' country, 1 substatus FROM dual UNION ALL
select 'COMPLETE' status, 'GERMANY' country, 0 substatus FROM dual)
select v1.status, v1.country, v1.cnt01, v2.cntIncluding0 from
(select status, country, count(*) cnt01 from tmp tmp1 group by status, country) v1
JOIN
(select status, country, count(*) cntIncluding0 from tmp tmp2 where substatus=0 group by status, country) v2
on v1.status=v2.status and v1.country=v2.country;
SQL> with tmp as
2 (
3 select 'COMPLETE' status, 'GERMANY' country, 0 substatus FROM dual UNION ALL
4 select 'COMPLETE' status, 'GERMANY' country, 1 substatus FROM dual UNION ALL
5 select 'COMPLETE' status, 'GERMANY' country, 0 substatus FROM dual
6 )
7 select status,
8         country,
9         count(substatus) cnt01,
10         sum(decode(substatus, 0, 1, 0)) cntincluding0
11    from tmp
12   group by status, country
13 ;
STATUS   COUNTRY      CNT01 CNTINCLUDING0
COMPLETE GERMANY          3             2

What happens u0093Updateu0094 command is used without where clause ?

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