Extracting a distinct list of values using the Index formula
In Xcelsius, I am trying to retrieve a distinct list of values from data imported using the Reporting Services button.
In the spreadsheet I am using the following formula:
=INDEX($A2:$A831,MATCH(0,COUNTIF($B$2:B2,$A2:$A831),0))
The above formula works correctly in Xcelsius, but when I select the preview button the values change to #N/A.
Please could you advise on why this does not work?
Many thanks,
Natalie
Hi Natalie,
First, you have to be aware of the fact that Xcelsius "simulates" an Excel function. When you are in design mode, the actual "Excel" (MS code) functions are executed. But when you are in preview mode (or export to a swf), all Excel functions are simulated (Xcelsius code).
The fact that your function works in design mode but not in preview/export may point to a bug.
But there are also certain assumptions (to address speed/efficiency) on the Xcelsius code which may cause the preview to fail. One such assumption is that on the VLOOKUP function, Xcelsius does not recalculate formulas in the index column of the VLOOKUP table array - if the index column contains formulas, the index column will always remain in the initial state (will not dynamically recalculate).
Also, not all features on a supported Excel function works. For example, array formulas are not supported.
Bobby
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My program:
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Return all the column values using the F4IF_INT_TABLE_VALUE_REQUEST
Hi,
How to return all the column values using the F4IF_INT_TABLE_VALUE_REQUEST?
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DATA : it_fields like help_value occurs 1 with header line.
data: begin of w_vbap,
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posnr like vbap-posnr,
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i_field type dfies.
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retfield = 'VBELN'
window_title = 'Select'
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Message Edited by Dennis Knutson on 02-08-2007 08:34 AM
Attachments:
Index 2D Array.PNG 2 KB -
Hi,
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http://office.microsoft.com/en-us/sharepointserver/HA102509991033.aspx#1
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THanks! Arup R(MCTS)
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Why isn't my query using the index?
I have a query that inserts values for engines in a grid; it uses a static date table to determine the day in week, or
week in year (depending on different standards, the DBA can configure this table to their business's likings). I have
two indexes on this table:
create table d_date (
date_key number(5) not null,
sql_calendar_date timestamp(3) null,
year_id number(5) null,
month_id number(3) null,
day_id number(3) null,
year_end_biz_date timestamp(3) null,
qtr_end_biz_date timestamp(3) null,
month_end_biz_date timestamp(3) null,
week_end_biz_date timestamp(3) null,
quarter_id number(3) null,
week_id number(3) null,
day_in_year number(5) null,
day_in_month number(3) null,
day_in_week number(3) null,
month_name char(3) null,
day_in_week_name char(3) null,
month_type_code char(1) null,
week_type_code char(1) null,
date_type_code char(1) null,
weekend_flag char(1) null,
holiday_flag char(1) null,
from_datetime timestamp(3) null,
to_datetime timestamp(3) null,
current_flag char(1) null,
constraint d_date_pkey primary key (date_key)
) tablespace dim;
create index d_date_dy on d_date(year_id, day_in_year) tablespace_dim_idx;
create index d_date_ww on d_date(year_id, week_id) tablespace_dim_idx;Now, when I run a query to insert the week id into a table based on two values, the year_key and day_in_year_key,
it should use the d_date_dy index correct?
Here is what the query looks like:
INSERT INTO F_ENGINE (YEAR_KEY,MONTH_KEY,WEEK_IN_YEAR_KEY,DAY_IN_YEAR_KEY,DAY_IN_MONTH_KEY,HOUR_IN_DAY_KEY, Q_HOUR_IN_DAY_KEY,
GRID_KEY,ENGINE_KEY,TIME_STAMP,ENGINE_CPU_UTIL,ENGINE_CPU_GRID_UTIL,MEMORY_TOTAL_BYTE, MEMORY_FREE_BYTE,DISK_FREE_MEGABYTE,
PROCESS_COUNT,ENGINE_ID,GRID_ID,GRID_NAME,BATCH_ID,RECORD_VIEWABLE_F)
SELECT EXTRACT(YEAR FROM START_DATETIME),EXTRACT(MONTH FROM START_DATETIME), DD.WEEK_ID,
TO_NUMBER(TO_CHAR(START_DATETIME, 'DDD')), EXTRACT(DAY FROM START_DATETIME),EXTRACT(HOUR FROM START_DATETIME),
FLOOR(EXTRACT(MINUTE FROM START_DATETIME)/15)*15,DG.GRID_KEY,DE.ENGINE_KEY, START_DATETIME,CPU_UTIL,DS_CPU,MEMORY,
FREE_MEMORY,FREE_DISK,PROCESSES,ID,PE.GRID,DG.GRID_NAME,:B1 ,1
FROM P_ENGINE PE, D_GRID DG, D_ENGINE DE, D_DATE DD
WHERE PE.GRID = DG.GRID_ID AND DG.CURRENT_FLAG = 'Y' AND PE.ID = DE.ENGINE_ID AND DE.GRID_KEY = DG.GRID_KEY AND
DE.CURRENT_FLAG = 'Y' AND PE.BATCH_ID = :B1 AND DD.YEAR_ID = EXTRACT(YEAR FROM START_DATETIME) AND
DD.DAY_IN_YEAR = TO_NUMBER(TO_CHAR(START_DATETIME,'DDD'))
ORDER BY EXTRACT(YEAR FROM START_DATETIME),EXTRACT(MONTH FROM START_DATETIME),
EXTRACT(DAY FROM START_DATETIME),EXTRACT(HOUR FROM START_DATETIME),FLOOR(EXTRACT(MINUTE FROM START_DATETIME)/15)*15,
DG.GRID_KEY,DE.ENGINE_KEY
Here is the explain plan:
Operation Object Object Type Order Rows Size (KB) Cost Time (sec) CPU Cost I/O Cost
INSERT STATEMENT
SORT ORDER BY
HASH JOIN
HASH JOIN
HASH JOIN
TABLE ACCESS FULL D_GRID TABLE 1 2 0.316 3 1 36887 3
TABLE ACCESS FULL D_ENGINE TABLE 2 10 0.410 3 1 42607 3
PARTITION LIST SINGLE 5 1434 344.496 9 1 2176890 9
TABLE ACCESS FULL P_ENGINE TABLE 4 1434 344.496 9 1 2176890 9
TABLE ACCESS FULL D_DATE TABLE 7 7445 283.550 19 1 3274515 18Now it is obviously not using the index for the d_date table since it is doing a full table access.
Does this have something to do with the fact that I am using extract(), to_number(), to_char() functions in my WHERE clause that it is not allowing the use of the index?
Any help would be greatly appreciated. Thanks.
-TimIt's difficult to tell just from this. For one thing, you didn't post your query using the forum format tags, so it's hard to read and you didn't post your Oracle version.
In the query, you don't always prefix columns with the table alias. That makes it impossible for us (and maintainers of this code) to know at a glance which table a column is in.
It's possible that performing functions on a column will disable the index. Do your other tables have indexes? Do you have updated statistics on all the tables?
The main reason the optimizer will not use an index is because it thinks it cheaper not to. -
Why does it not use the index?
L.S.,
We are using a table called IT_RFC_REGISTRATION. It is a relatively big table for our application.
Its primary key is RFCNR, each new RFCNR getting the next value.
Now for my intranet report I am interested in the last 40 records. But when I execute:
SELECT *
FROM IT_RFC_REGISTRATION
ORDER BY RFCNR DESC
the query takes ages to execute.
When I do this:
SELECT RFCNR
FROM IT_RFC_REGISTRATION
ORDER BY RFCNR DESC
the result comes instantaneous because this query uses the index on RFCNR.
Why does the former query not use the index to execute? It should be much faster to fetch ROWIDs from the index end to start and use those to get the records, than to load all the records and then sort them.
Is there a trick with which I can use a join of the latter query and the former query to speed up the result?
Greetings,
Philbert de Zwart,
Utrecht, The Netherlands.The difference you see in query run time is based on the amount data being sorted, then returned. In the first query, a full table scan is faster since if the index was used, Oracle would have to do a lookup in the index, get the rowid's and go look up the data in the table (TWO disk i/o's). It's faster to just scan the entire table.
Indexes will generally not be used unless you have a where clause. If you only need a few fields from the table, you could include them all in an index. For instance, if you only need RFCNR & DESC create a concatenated index on those two columns and then only a scan of the index is required (very fast). -
How to use the index method for pathpoints object in illustrator through javascripts
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CarlosCanto -
Why is this query not using the index?
check out this query:-
SELECT CUST_PO_NUMBER, HEADER_ID, ORDER_TYPE, PO_DATE
FROM TABLE1
WHERE STATUS = 'N'
and here's the explain plan:-
1
2 -------------------------------------------------------------------------------------
3 | Id | Operation | Name | Rows | Bytes | Cost (%CPU)|
4 -------------------------------------------------------------------------------------
5 | 0 | SELECT STATEMENT | | 2735K| 140M| 81036 (2)|
6 |* 1 | TABLE ACCESS FULL| TABLE1 | 2735K| 140M| 81036 (2)|
7 -------------------------------------------------------------------------------------
8
9 Predicate Information (identified by operation id):
10 ---------------------------------------------------
11
12 1 - filter("STATUS"='N')
There is already an index on this column, as is shown below:-
INDEX_NAME INDEX_TYPE UNIQUENESS TABLE_NAME COLUMN_NAME COLUMN_POSITION
1 TABLE1_IDX2 NORMAL NONUNIQUE TABLE1 STATUS 1
2 TABLE1_IDX NORMAL NONUNIQUE TABLE1 HEADER_ID 1
So why is this query not using the index on the 'STATUS' Column?
I've already tried using optimizer hints and regathering the stats on the table, but the execution plan still remains the same, i.e. it still uses a FTS.
I have tried this command also:-
exec dbms_stats.gather_table_stats('GECS','GEPS_CS_SALES_ORDER_HEADER',method_opt=>'for all indexed columns size auto',cascade=>true,degree=>4);
inspite of this, the query is still using a full table scan.
The table has around 55 Lakh records, across 60 columns. And because of the FTS, the query is taking a long time to execute. How do i make it use the index?
Please help.
Edited by: user10047779 on Mar 16, 2010 6:55 AMIf the cardinality is really as skewed as that, you may want to look at putting a histogram on the column (sounds like it would be in order, and that you don't have one).
create table skewed_a_lot
as
select
case when mod(level, 1000) = 0 then 'N' else 'Y' end as Flag,
level as col1
from dual connect by level <= 1000000;
create index skewed_a_lot_i01 on skewed_a_lot (flag);
exec dbms_stats.gather_table_stats(user, 'SKEWED_A_LOT', cascade => true, method_opt => 'for all indexed columns size auto');Is an example. -
Does an 'in' clause use the index?
In the following query:
Select * from myTable where field_1 in ('thisfield', 'thatfield');
Assuming there is an index on field_1, will this query use the index?
Thanks,
SaraIn the following query:
Select * from myTable where field_1 in ('thisfield', 'thatfield');
Assuming there is an index on field_1, will this query use the index?It should use the index to find where the row you want is in the table and then access the table to return all colunms for that row.
This can be easily verified by doing an explain plan on your SQL statement. The Oracle manuals should have information on how to
run an explain plan if you're not familiar with it. -
Query
SELECT case.case_objid FROM [email protected] case, table_x_cwp_tickect_details_vw t WHERE CASE.case_condition_cd IN ('OPEN', 'OPEN-DISPATCH', 'OPEN-REJECT', 'OPEN-RETURNED') AND case.case_type_cd in ('CUSTOMER FAULT', 'CHRONIC','SCHEDULED ACTIVITY','PROBLEM') AND ROWNUM <= 500 AND case.case_objid = t.ticket_objid AND ( ( case.account_id = '672286' ) ) ORDER BY case.case_id DESC
From PROD
Plan
SELECT STATEMENT HINT: FIRST_ROWS Cost: 2,629 Bytes: 221,500 Cardinality: 500
37 SORT ORDER BY Cost: 2,629 Bytes: 221,500 Cardinality: 500
36 COUNT STOPKEY
35 NESTED LOOPS OUTER Cost: 2,628 Bytes: 279,533 Cardinality: 631
33 HASH JOIN OUTER Cost: 2,627 Bytes: 275,116 Cardinality: 631
31 NESTED LOOPS OUTER Cost: 2,249 Bytes: 266,282 Cardinality: 631
28 NESTED LOOPS Cost: 1,766 Bytes: 257,448 Cardinality: 631
26 NESTED LOOPS Cost: 1,765 Bytes: 253,031 Cardinality: 631
24 NESTED LOOPS Cost: 1,764 Bytes: 248,614 Cardinality: 631
22 NESTED LOOPS Cost: 1,763 Bytes: 244,197 Cardinality: 631
19 NESTED LOOPS Cost: 1,258 Bytes: 235,363 Cardinality: 631
17 NESTED LOOPS Cost: 1,257 Bytes: 230,946 Cardinality: 631
14 NESTED LOOPS OUTER Cost: 752 Bytes: 217,695 Cardinality: 631
12 HASH JOIN Cost: 751 Bytes: 213,278 Cardinality: 631
1 INDEX FAST FULL SCAN INDEX (UNIQUE) SA.GBST_ELM_OBJINDEX Cost: 2 Bytes: 10,052 Cardinality: 1,436
11 HASH JOIN Cost: 748 Bytes: 208,861 Cardinality: 631
2 INDEX FAST FULL SCAN INDEX (UNIQUE) SA.GBST_ELM_OBJINDEX Cost: 2 Bytes: 10,052 Cardinality: 1,436
10 HASH JOIN Cost: 746 Bytes: 204,444 Cardinality: 631
3 INDEX FAST FULL SCAN INDEX (UNIQUE) SA.GBST_ELM_OBJINDEX Cost: 2 Bytes: 10,052 Cardinality: 1,436
9 HASH JOIN Cost: 743 Bytes: 200,027 Cardinality: 631
4 INDEX FAST FULL SCAN INDEX (UNIQUE) SA.GBST_ELM_OBJINDEX Cost: 2 Bytes: 10,052 Cardinality: 1,436
8 NESTED LOOPS Cost: 741 Bytes: 195,610 Cardinality: 631
5 REMOTE REMOTE CASE Cost: 235 Bytes: 156,488 Cardinality: 631
7 TABLE ACCESS BY INDEX ROWID TABLE SA.TABLE_CASE Cost: 1 Bytes: 62 Cardinality: 1
6 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.TC_C_CASE_OBJINDEX Cost: 1 Cardinality: 1
13 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.UN_PTT2CASE Cost: 1 Bytes: 7 Cardinality: 1
16 TABLE ACCESS BY INDEX ROWID TABLE SA.TABLE_SITE Cost: 1 Bytes: 21 Cardinality: 1
15 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.SITE_OBJINDEX Cost: 1 Cardinality: 1
18 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.BUS_ORG_OBJINDEX Cost: 1 Bytes: 7 Cardinality: 1
21 TABLE ACCESS BY INDEX ROWID TABLE SA.TABLE_ADDRESS Cost: 1 Bytes: 14 Cardinality: 1
20 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.ADDRESS_OBJINDEX Cost: 1 Cardinality: 1
23 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.COUNTRY_OBJINDEX Cost: 1 Bytes: 7 Cardinality: 1
25 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.CONTACT_OBJINDEX Cost: 1 Bytes: 7 Cardinality: 1
27 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.CONDITION_OBJINDEX Cost: 1 Bytes: 7 Cardinality: 1
30 TABLE ACCESS BY GLOBAL INDEX ROWID TABLE SA.TABLE_SITE_PART Cost: 1 Bytes: 14 Cardinality: 1 Partition #: 34
29 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.SITE_PART_OBJINDEX Cost: 1 Cardinality: 1
bold 32 TABLE ACCESS FULL TABLE SA.TABLE_MOD_LEVEL Cost: 376 Bytes: 1,442,084 Cardinality: 103,006 bold
34 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.PART_NUM_OBJINDEX Cost: 1 Bytes: 7 Cardinality: 1
From DEV platform
Plan
SELECT STATEMENT HINT: FIRST_ROWS Cost: 591 Bytes: 61,134 Cardinality: 138
37 SORT ORDER BY Cost: 591 Bytes: 61,134 Cardinality: 138
36 COUNT STOPKEY
35 HASH JOIN Cost: 590 Bytes: 61,134 Cardinality: 138
1 INDEX FAST FULL SCAN INDEX (UNIQUE) SA.GBST_ELM_OBJINDEX Cost: 2 Bytes: 10,045 Cardinality: 1,435
34 HASH JOIN Cost: 588 Bytes: 60,168 Cardinality: 138
2 INDEX FAST FULL SCAN INDEX (UNIQUE) SA.GBST_ELM_OBJINDEX Cost: 2 Bytes: 10,045 Cardinality: 1,435
33 HASH JOIN Cost: 585 Bytes: 59,202 Cardinality: 138
3 INDEX FAST FULL SCAN INDEX (UNIQUE) SA.GBST_ELM_OBJINDEX Cost: 2 Bytes: 10,045 Cardinality: 1,435
32 HASH JOIN Cost: 583 Bytes: 58,236 Cardinality: 138
4 INDEX FAST FULL SCAN INDEX (UNIQUE) SA.GBST_ELM_OBJINDEX Cost: 2 Bytes: 10,045 Cardinality: 1,435
31 NESTED LOOPS OUTER Cost: 580 Bytes: 57,270 Cardinality: 138
29 NESTED LOOPS OUTER Cost: 579 Bytes: 56,304 Cardinality: 138
27 NESTED LOOPS OUTER Cost: 469 Bytes: 54,372 Cardinality: 138
24 NESTED LOOPS Cost: 363 Bytes: 52,440 Cardinality: 138
22 NESTED LOOPS Cost: 362 Bytes: 51,474 Cardinality: 138
20 NESTED LOOPS Cost: 361 Bytes: 50,508 Cardinality: 138
18 NESTED LOOPS Cost: 360 Bytes: 49,542 Cardinality: 138
15 NESTED LOOPS Cost: 249 Bytes: 47,610 Cardinality: 138
13 NESTED LOOPS Cost: 248 Bytes: 46,644 Cardinality: 138
10 NESTED LOOPS OUTER Cost: 138 Bytes: 43,746 Cardinality: 138
8 NESTED LOOPS Cost: 137 Bytes: 42,780 Cardinality: 138
5 REMOTE REMOTE CASE Cost: 26 Bytes: 34,224 Cardinality: 138
7 TABLE ACCESS BY INDEX ROWID TABLE SA.TABLE_CASE Cost: 1 Bytes: 62 Cardinality: 1
6 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.TC_C_CASE_OBJINDEX Cost: 1 Cardinality: 1
9 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.UN_PTT2CASE Cost: 1 Bytes: 7 Cardinality: 1
12 TABLE ACCESS BY INDEX ROWID TABLE SA.TABLE_SITE Cost: 1 Bytes: 21 Cardinality: 1
11 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.SITE_OBJINDEX Cost: 1 Cardinality: 1
14 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.BUS_ORG_OBJINDEX Cost: 1 Bytes: 7 Cardinality: 1
17 TABLE ACCESS BY INDEX ROWID TABLE SA.TABLE_ADDRESS Cost: 1 Bytes: 14 Cardinality: 1
16 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.ADDRESS_OBJINDEX Cost: 1 Cardinality: 1
19 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.COUNTRY_OBJINDEX Cost: 1 Bytes: 7 Cardinality: 1
21 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.CONTACT_OBJINDEX Cost: 1 Bytes: 7 Cardinality: 1
23 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.CONDITION_OBJINDEX Cost: 1 Bytes: 7 Cardinality: 1
26 TABLE ACCESS BY GLOBAL INDEX ROWID TABLE SA.TABLE_SITE_PART Cost: 1 Bytes: 14 Cardinality: 1 Partition #: 34
25 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.SITE_PART_OBJINDEX Cost: 1 Cardinality: 1
bold 28 INDEX RANGE SCAN INDEX SA.IND_PART_INFO2PART_NUM Cost: 1 Bytes: 14 Cardinality: 1 bold
30 INDEX UNIQUE SCAN INDEX (UNIQUE) SA.PART_NUM_OBJINDEX Cost: 1 Bytes: 7 Cardinality: 1
Conclusion:
IND_PART_INFO2PART_NUM is not in use in Production environment
PROD
1. SQL> select index_name,NUM_ROWS,CLUSTERING_FACTOR from dba_indexes where index_name='IND_PART_INFO2PART_NUM';
INDEX_NAME NUM_ROWS CLUSTERING_FACTOR
IND_PART_INFO2PART_NUM 103023 46488
DEV environment
SQL> select index_name,NUM_ROWS,CLUSTERING_FACTOR,table_name from dba_indexes where index_name='IND_PART_INFO2PART_NUM';
INDEX_NAME NUM_ROWS CLUSTERING_FACTOR TABLE_NAME
IND_PART_INFO2PART_NUM 101982 45722 TABLE_MOD_LEVEL
1. Index is rebuild
2. stats are up to date
3. Redef on table is done.
Still no change in the plan .Osama-mustafa wrote:
Aman.... wrote:
Osama-mustafa wrote:
alter index <index-name> rebuild ;Why?
Aman....I faced this issue with query and indexes was need rebuildWhat issue Osama-that query wasn't using index and after rebuild it did start using it? Not just that this reply is wrong , this is OP has mentioned that he has done already. Please note that index rebuild is not the answer when the query is not using the index. There can be many reasons behind it. Have a look at Richard Foote's blog where he explains all of this in a very detailed way and in many posts.
Aman.... -
Why is Oracle not using the index??
Hi,
I have a table called 'arc_errors' which has an index on 'member_number' as follows:- Create/Recreate indexes
create index DWO.DW_ARC_CERRORS_MNO on DWO.DW_ARC_CERRORS (MEMBER_NUMBER);
But surpisingly, when I execute the following query, it does not use the index.
SELECT member_number,
COUNT(*) error_count
FROM arc_errors a
WHERE member_number = 68534152 AND
( tx_type = 'SDIC' AND
error_number IN (4, 7, 12, 13, 15, 17, 18, 705) )
OR
( tx_type = 'AUTH' AND
error_number IN (100, 104, 107, 111, 116) )
OR
( tx_type = 'BHO' AND
error_number IN (708,710) )
OR
( tx_type = 'XLGN' AND
( error_number BETWEEN 102 AND 105 OR
error_number BETWEEN 107 AND 120 OR
error_number BETWEEN 300 AND 304 ) )
OR
( tx_type = 'None' AND
( error_number IN (20, 112) OR
error_number BETWEEN 402 AND 421 ) )
OR
( tx_type = 'HYBR' AND
error_number IN (303, 304) )
GROUP BY member_number;
This is what 'explain plan' tell me
SELECT STATEMENT, GOAL = RULE 237907 502923 15087690
SORT GROUP BY 237907 502923 15087690
PARTITION RANGE ALL
TABLE ACCESS FULL DWO DW_ARC_CERRORS 237209 502923 15087690
Can someone tell me why a 'table acess full' is required here?
Thanks in advance,
RajeshSorry, I just found the solution myself. I need to put an extra pair of braces around the set of conditions seperated by OR.
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