Intersection in Select statement

Hi,
Do any one know about some intersection option in select statement.
My case is : I have 2 database tables say TAB1 and TAB2 . TAB1 has data (A, B, C, D) and TAB2 has data (B, D) now I want the output as (A and C) after joining these 2 tables and selecting.
That is I want the values of Table1 which are not there in Table2.
I have the option of selecting Table1 and then for all entries fetch Table2, then Loop at the Table & delete if record exists.
But this is creating performance issue as the number of records in both tables are in Lakhs.
So I wanted to know is there any option like Left Intersecion or some thing like left outer join and all, so that I can pick the dat in one select.
Thanks,
Sameer

Issue solved :
Sample Code
TYPES : BEGIN OF X_VBAK,
VBELN TYPE VBAK-VBELN,
AUBEL TYPE VBRP-AUBEL.
TYPES : END OF X_VBAK.
DATA : I_VBAK TYPE STANDARD TABLE OF X_VBAK.
DATA : I_VBAS TYPE STANDARD TABLE OF X_VBAK.
SELECT AVBELN BAUBEL INTO CORRESPONDING FIELDS OF TABLE I_VBAK FROM ( VBAK AS A
LEFT OUTER JOIN VBRP AS B ON AVBELN EQ BAUBEL ).
SORT I_VBAK BY VBELN.
delete ADJACENT DUPLICATES FROM i_vbak COMPARING ALL FIELDS.
DELETE I_VBAK WHERE AUBEL NE ''.
SORT I_VBAK BY VBELN.
SORT I_VBAS BY VBELN.

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Using Select statement in IF condition?

hi all,
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eg like- if( select 1 from ASD) then
end if;

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Why don't test simple cases like this first?
An example to show it.
SQL> begin
2   if exists (select 1 from dual) then
3    dbms_output.put_line('ok');
4   end if;
5 end;
6 /
if exists (select 1 from dual) then
ERRORE alla riga 2:
ORA-06550: line 2, column 5:
PLS-00204: function or pseudo-column 'EXISTS' may be used inside a SQL
statement only
ORA-06550: line 2, column 2:
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4   end if;
5 end;
6 /
if ( (select count(*) from dual) > 0 ) then
ERRORE alla riga 2:
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( - + case mod new not null others <an identifier>
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3    dbms_output.put_line('ok');
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Using Select Statement in the decoe function in Oralce Form10 g

Hello All:
Is it possible to call another Select Statement inside the Decode Function in Oracle Form? I tested the SQL on PL/SQL Plus, it ran without giving any errors. However, I got the following errors when I tried to compile the procedure in the Oracle Form right after the where condiction at the first select statement....
Error 103 at line number....
Encountered the symbol "," when expecting one of the following
) intersect minus order union .....
Select a.col1
a.col2,
decode((select min(test_date) pa_closr_date from table_name c where a.col1 = c.col1), null, a.col3,(select min(test_date) pa_closr_date from table_name c where a.col1 = c.col1)) test_date,
a.col4,
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thanks ahead for any help.
KMD

You don't need the Select within the decode. In SQL Plus, I tried your SQL using this:
Select
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Select
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    a.col2,
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from table_name a,
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where c.col1(+) = a.col1;

Cursor - Suggestions for Dynamic select statements

Hey,
Am trying to define a cursor like this -
cursor c1 is
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Any suggestion is highly appreciated. Thanks!

Well that was meant to be my point. If you had two, you wouldn't (I hope) call the second one "c2" - you would be forced to think about what it represented, and name it "c_order_history" or something. Sticking "1" on the end does not make an extensible naming convention for cursors any more than it does for variables, procedures, tables or anything else, and so the "1" in "c1" is redundant because there will never be a c2.

Help needed with a SELECT statement. How can I make it run faster?

Hi,
not sure if my brain is just too tired but I can't seem to crack this problem today.
Here is my scenario.
I have 2 tables
TABLE1 (searchId INTEGER, routeId INTEGER);
TABLE2 (routeId INTEGER, cityId INTEGER);
There are indexes on all 4 columns.
(routeId on TABLE1 is a primary key).
In the data I am using, a given search has more than 500 routes, each route has between 10 and 300 cities among more than 4000 possible different cities.
Now, what I want to create is the list of route couple, within a certain search, that do not have a single city in common.
That list should populate a table with the following structure
TABLE3 (searchId INTEGER, routeId1 INTEGER, routeId2 INTEGER)
Here is the fastest select statement I have found so far.
SELECT :searchId, t1.routeId, t2.routeId FROM table1 t1, table1 t2
WHERE t1.searchId=:searchId AND t2.searchId=:searchId
AND t1.routeId>t2.routeId
AND NOT EXISTS (
SELECT cityId FROM table2
WHERE routeId=t1.routeId
INTERSECT
SELECT cityId FROM table2
WHERE routeId=t2.routeId);
But it still seem really slow to me.
Any suggestion for an improved version is welcome.
Thanks,
Martin.
Title was edited by:
user453358

I originaly posted this thread because I tought I was missing something "obvious" that would perform better that would make my SELECT statement perform better.
So I did not want to go as deep as using TKPROOF yet.
Here is the statistics I gets on my statement.
1   SELECT t1.searchId,t1.routeId, t2.routeId id2
2      FROM table1 t1, table1 t2
3     WHERE t1.searchid=t2.searchid
4      AND t1.searchId=91
5      AND t1.routeId>t2.routeId
6      AND NOT EXISTS (
7             SELECT cityId FROM table2
8              WHERE routeId=t1.routeId
9             INTERSECT
10             SELECT cityId FROM table2
11*            WHERE routeId=t2.routeId)
SQL> /
43302 rows.
Tidsåtgång: 00:01:55.02
Körschema
   0      SELECT STATEMENT Optimizer=ALL_ROWS (Cost=9 Card=1 Bytes=14)
   1    0   FILTER
   2    1     TABLE ACCESS (BY INDEX ROWID) OF 'table1' (TABLE) (Cost=1 Card=1 Bytes=7)
   3    2       NESTED LOOPS (Cost=3 Card=1 Bytes=14)
   4    3         TABLE ACCESS (BY INDEX ROWID) OF 'table1' (TABLE) (Cost=2 Card=1 Bytes=7)
   5    4           INDEX (RANGE SCAN) OF 'table1_IDX1' (INDEX) (Cost=1 Card=1)
   6    3         INDEX (RANGE SCAN) OF 'table1_IDX1' (INDEX) (Cost=0 Card=1)
   7    1     INTERSECTION
   8    7       SORT (UNIQUE) (Cost=3 Card=108 Bytes=864)
   9    8         TABLE ACCESS (BY INDEX ROWID) OF 'table2' (TABLE) (Cost=2 Card=108 Bytes=864)
10    9           INDEX (RANGE SCAN) OF 'table2_IDX1' (INDEX) (Cost=1 Card=108)
11    7       SORT (UNIQUE) (Cost=3 Card=108 Bytes=864)
12   11         TABLE ACCESS (BY INDEX ROWID) OF 'table2' (TABLE) (Cost=2 Card=108 Bytes=864)
13   12           INDEX (RANGE SCAN) OF 'table2_IDX1' (INDEX) (Cost=1 Card=108)
Statistik
          1 recursive calls
          0 db block gets
    2872765 consistent gets
          0 physical reads
        812 redo size
     964172 bytes sent via SQL*Net to client
      32245 bytes received via SQL*Net from client
       2888 SQL*Net roundtrips to/from client
     860256 sorts (memory)
          0 sorts (disk)
      43302 rows processed Looks like a big number of consistent gets! Any idea how to improve on that?
Martin.

If statement in select statement alias

I have the following select statement. It has the alias Survivors, Deaths and "All Cases". Is it posible to use :P_LANGUAGE variable to say that -- IF :P_LANGUAGE = FRENCH THEN alias are Survivants for survivors, Décès for Deaths, Tous_les_cas for All Cases. Please advise
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You may not be able to add this condition inside the SQL Statement. But you can add this condition outside the statement, if you're using PL/SQL...
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Hi,
Is it possible to write a select statement that returns all values from an interval? Interval boundaries are variable.
something like this:
select (for x in 1,1024 loop x end loop) from dual
(this, of course, doesn't work)
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Thanks in advance for your help,
Mia.

For your simple case, with a lower boundary of 1, you can use:
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TTFN
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Select statement operators in ecc 6.

Hi Experts,
I have a small doubt about the '>=' ( greater than or equal to ) operator usage in select statement. Is this operator by any chance perform not as desired in ECC 6.0. Is it a good option to use 'GE' instead of '>='. ?
It may sound a bit awkward, but still I would like to know. I am facing a situation, which could be related to this. An early response would be highly appreciated.
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Regards,
Sandipan

>
Jaideep Sharma wrote:
> Hi,
> The only difference is GE will take a little more time than >= as system need to convert the keyword into actual operator when fetching data from Database.
>
> KR Jaideep,
????? Every Open SQL statements is translated to the SQL slang the underlying database is talking regardless if you type GE or >=
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Hi Experts,
Can you tell me how to find the number of fetched lines from select statements..
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Thanks in advance
santosh

Hi,
Look for the system field SY_TABIX. That will contain the number of records which have been put into an internal table through a select statement.
For ex:
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I am not sure what you mean by the second question. If you can let me know what you need then we might have a solution.
Hope this helps,
Sudhi
Message was edited by:
Sudhindra Chandrashekar

Use of LIKE in where clause of select statement for multiple records

Hi Experts,
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Hi,
yes, For All entries won't work for LIKE with '% '.
I think the other alternative is go for Native SQL by writing sub-query
sample code is here:
data: begin of i_mara occurs 0,
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exec sql.
select matnr, matkl from mara where matnr in (select matnr from marc) and matnr like '%ma' into :i_mara
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endloop.
hope u got it.
regards
Mahesh
Edited by: Mahesh Reddy on Jan 21, 2009 2:32 PM

What is the use of additon in up to 1 rows in SELECT statement

Hi All,
         What is the use of up to 1 rows in select statement.
for example
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please help me out...
Thanks,
santosh.

Hi,
Use "select up to 1 rows" only if you are sure that all the records returned will have the same value for the field(s) you are interested in. If not, you will be reading only the first record which matches the criteria, but may be the second or the third record has the value you are looking for.
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Hi friends.
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SELECT SINGLE * FROM VEKP WHERE VEGR4 EQ STAGE_DOCK
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        %_HINTS ORACLE
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given above statement is taking long time for processing.
when i check for the same secondary index in vekp table i couldn't see any DB index name with vekp~z3 or vekp^z3 or vekp____z3.
And the sy-subrc value after select statement is 4. (even though values avaliable in VEKP with given where condition values)
My question is why my select statement is taking long time and sy-subrc is 4?
what happens if a secnodary index given in select statement, which is not avaliable in that DB Table?

Hi,
> ONe more question: is it possible to give more than one index name in select statement.
yes you can:
read the documentation:
http://download.oracle.com/docs/cd/A97630_01/server.920/a96533/hintsref.htm#5156
index_hint:
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- If this hint specifies a single available index, then the optimizer performs
a scan on this index. The optimizer does not consider a full table scan or
a scan on another index on the table.
- If this hint specifies a list of available indexes, then the optimizer
considers the cost of a scan on each index in the list and then performs
the index scan with the lowest cost. The optimizer can also choose to
scan multiple indexes from this list and merge the results, if such an
access path has the lowest cost. The optimizer does not consider a full
table scan or a scan on an index not listed in the hint.
- If this hint specifies no indexes, then the optimizer considers the
cost of a scan on each available index on the table and then performs
the index scan with the lowest cost. The optimizer can also choose to
scan multiple indexes and merge the results, if such an access path
has the lowest cost. The optimizer does not consider a full table scan.
Kind regards,
Hermann

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Hey Vijay,
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Can we use is null in our select statement in ABAP program

hi,
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Hi,
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Hi I am having the 10 lack records in the KONP table . If i am trying to see all the records in SE11 , it is giving the short dump TSV_TNEW_PAGE_ALLOC_FAILED . I know this is because of less memory in the Server . Is there any other way to get the data ? How to optimise the below SELECT statement if i have large data in the table .
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Hi,
try to use "UP TO n ROWS" to control the quantity of selected data in each Loop step.
Something like this:
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Regards

Intersection in Select statement

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