SQL & PL/SQL :: Where To Implement ANSI JOIN In Real Time
Dec 9, 2010I want to know about ANSI JOIN in Oracle 9i and how to use this ANSI JOINS and where we have to implement this ANSI JOIN in real time.
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SQL & PL/SQL :: Use ANSI Standard JOIN Syntax?
Oct 9, 2013 Use ANSI standard JOIN syntax for example i have this code.
SELECT resv_num, unit_date
FROM p_resv_unit ru, p_pm_unit_night pun
WHERE pun.property_id = in_property_id
AND pun.pm_unit_num = cvUnitNum
AND pun.unit_date BETWEEN start_date AND end_date
AND pun.resv_unit_id = ru.resv_unit_id;
[code]....
and is it a good idea to change it, because both ways it works?
SQL & PL/SQL :: ANSI Join Returning Wrong Dataset?
May 25, 2011...continued from "Problems with full outer join"I think that ANSI joins in Oracle doesn't work correctly. Or am I doing something wrong? The query looks like this:
select nvl(k.id_pers,t.id_pers) id_pers, k.dat_avst
, id_trans, dat_trans
from
( select ka.id_pers, ka.dat_avst, ka.dat_nasta_avst
[code]...
It's a full outer join between one table (with a subquery) and an inline view with two tables You can see the returned rows in the listing below. The query returns one row where there is a match between t_trans and t_kontoavst.It also returns two rows from table t_kontoavst with no correspondence in t_trans.Finally it returns 26 rows from the table t_trans with no correspondence in t_kontoavst. But among them there are many rows in contradiction to the conditions:
and trunc(dat_trans) >= to_date('20040101','yyyymmdd')
and trunc(dat_trans) <= to_date('20050604','yyyymmdd')
Actually it seems to return all the 27 rows in t_trans (one of them joined to t_kontoavst).These conditions are actually not part of the join so I changed it to:
where trunc(dat_trans) >= to_date('20040101','yyyymmdd')
and trunc(dat_trans) <= to_date('20050604','yyyymmdd')
It's not clear to me if this where condition belongs to the joined result or just to the right joined inline view.With this change the correct rows from t_trans where returned but unfortunately the two rows from t_kontoavst with no correspondence in t_transdisappeared. I thought maybe that is because dat_trans is null for these two rows after the join. Therfore I also includeddat_trans to be null. This can only happen when t_trans is missing
where dat_trans is null
or (trunc(dat_trans) >= to_date('20040101','yyyymmdd')
and trunc(dat_trans) <= to_date('20050604','yyyymmdd'))
But that didn't change the result I have also tried right and left joins and it produces similar errors.One other thing i tried was to replace the inline view with one of the underlying tables t_trans. But the result was the same.Data returned from the original query (see query above):
ID_PERSDAT_AVSTID_TRANSDAT_TRANS
1945050505022005-05-011721642005-05-16
194505050502null1723722005-06-16
194505050502null1723732005-07-16
[code]...
Data in the tables.SQL Statement which produced this data:
select id_trans, id_pers, dat_trans
from t_trans
order by id_pers, dat_trans, id_trans
ID_TRANSID_PERSDAT_TRANS
1721641945050505022005-05-16
1723721945050505022005-06-16
1723731945050505022005-07-16
[code]...
SQL Statement which produced this data:
select id_pers, dat_avst
from t_kontoavst
order by id_pers, dat_avst
ID_PERSDAT_AVST
1945050505021997-05-01
1945050505022005-05-01
1958080808071997-05-01
[code]...
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View 1 Replies View RelatedSQL & PL/SQL :: ANSI To NON-ANSI SQL Conversion
Dec 10, 2010A very simple question yet so difficult...
I have a ansi query...
select * from
tz1
left outer join tz2 on tz1.aa=tz2.cc and tz1.bb is null;
What is the most efficient non-ansi way of writing it?
-----------------script-----------------
create table tz1(aa int, bb int);
create table tz2(cc int, dd int);
insert into tz1 values (1, 100);
insert into tz1 values (2, 200);
insert into tz1 values (3, 300);
[Code]......
SQL & PL/SQL :: Rewrite Query Which Is In ANSI 92 Standard To ANSI 89 Standard
Jun 17, 2011To rewrite this sql which is in ANSI 92 standard to ANSI 89 standard.
SELECT "PROJECT"."X_SAMPLED_DATE", SAMPLE"."SAMPLE_NUMBER"
FROM "SHIRE_PRD"."LimsUser"."SAMPLE" "SAMPLE" INNER JOIN "SHIRE_PRD"."LimsUser"."PROJECT" "PROJECT" ON"SAMPLE"."PROJECT"="PROJECT"."NAME"
WHERE ("SAMPLE"."SAMPLE_TYPE"='EM' OR "SAMPLE"."SAMPLE_TYPE"='WATER') AND "SAMPLE"."STATUS"<>'X' AND("PROJECT"."X_SAMPLED_DATE">={ts '2011-05-01 00:00:00'} AND "PROJECT"."X_SAMPLED_DATE"<{ts '2011-06-01 00:00:00'})
ORDER BY "SAMPLE"."PRODUCT"
Real Time Data Migration
Sep 13, 2013we have a requirement for migrating data real time from source db to target db as well as to a queue.
achieve this using any custom technique?
we tried exploring Streams with CDC but Streams being depricated and CDC removed in Oracle 12 c, we are kind of stuck.
PL/SQL :: Using Temp Table In Real Time
Nov 16, 2012What is the need of Temp table in Oracle ? what is the advantage of Temp table over normal table ? Is temp table a log operation one. What is the scenario of using temp table in real time ?
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Nov 15, 2012Oracle 11.2.0.3.0
I have a primary database orcl and logical standby database orcl_std.
Real time apply is enabled. I have standby redologs in both primary and standby sides and I`ve started recovery with below command:
ALTER DATABASE START LOGICAL STANDBY APPLY IMMEDIATE;
When I create a new table in primary database, I am unable to see it on standby database (Although real time apply is enabled) However, when I switch log in primary, I can see the new table in standby database.
My question is, why realtime apply is not working in my scenerio ? I was expecting to see the new table immediately in standby database once it is created in primary database. Why am I supposed to wait for log switch in real time apply ?
SQL & PL/SQL :: Real Time Scenario For When Object Type Used In Block?
May 16, 2013When we use this kind of code in PL/SQL block.
CREATE OR REPLACE TYPE sample_object IS OBJECT
(id NUMBER
,name VARCHAR2(30));
/
CREATE OR REPLACE TYPE sample_table IS TABLE OF sample_object;
I have read some docs ,but I didn't get any information where exactly we use this.provide one real time scenario with an example.How this is different from record.
Best Tool / Method - Move Data In Real Time?
Sep 22, 2010We have oracle 9i database named A with 2 schema A1 and A2.User enters data at A1 schema and the incremental data moved to A2 schema after some verfications performed by some scheduled job on A1 schema.
we want to move this incremental data to B1 schema of another oracle 9i database B at the real time when data gets entered to A2 schema of A oracle 9i database. We have access to A2 schema of A database and B1 schema of B database.way to do it or best practice to do this activity or if there is any third party tool or any available oracle utility to perform it?
Note: A2 schema of A database and B1 schema of B database has one to one mapping.We want to avoid using trigger on A2 schema, how data gets populated from A1 to A2 schema .
Application Express :: Change Read Only Condition From Always To None On Real Time
Sep 4, 2012Can we change the condition of an item from always to none on the real time ? How ?
View 3 Replies View RelatedData Guard :: How To Disable REAL TIME QUERY In DG 11gr2
Dec 11, 2012With 11gr2, by default, on STARTUP, the standby database is open
-> in READ ONLY mode
-> with Intended State: APPLY-ON
so the ACTIVE DATAGUARD option is in use ....
is there a way to deactivate REAL TIME QUERY permanently, so whether on STARTUP or STARTUP MOUNT, the standby stay only mounted with Intended State: APPLY-ON
The only way i found is to do the following :
SQL> startup
DGMGRL> edit database 'PHNXENT' set state='APPLY-OFF';
then
SQL> startup mount
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Performance Tuning :: Real Time Speed Improvements And Auto-trace Results
Feb 4, 2011I've got a query running a select count (*) over a table. The default plan takes in the order of 15 minutes to return, a hinted plan to use a different index takes 3 minutes to return.
Unfortunately I cant get at the index stats and a few other areas which I suspect may be key here.When running autotrace against the two queries I see fairly different values as one would expect.
Query
select count (*) from fulfilmentitem bfi where created >= sysdate-30 AND bfi.status = 'FA' AND bfi.fulfilmentmethod = 'D'
Slow run
PLAN_TABLE_OUTPUT
-----------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)|
----------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | 15 | 33119 (1)|
| 1 | SORT AGGREGATE | | 1 | 15 | |
|* 2 | TABLE ACCESS BY INDEX ROWID| FULFILMENTITEM | 12525 | 183K| 33119 (1)|
|* 3 | INDEX RANGE SCAN | IDX_FULFIL_METHODSTATUS | 250K| | 1786 (1)|
----------------------------------------------------------------------------------------------
[code]....
IDX_FULFIL_METHODSTATUS is across FULFILMENTMETHOD & STATUS in that order.
IDX_BFI_CREATED is on CREATED and is approx 70% of the size of the other index
The row counts estimated in the explain plan are out, the count(*) comes in at 32.8k rows.As you will have seen, the fast run shows a pretty significant consistent get increase compared to the slow run and a decent though not dramatic physical read drop.
My uncertainty is around if these changes in consistent get/phys read values would typically be enough to suggest the real time improvements I'm observing or if other (albeit perhaps temporary) factors are involved. It is a prod OLTP environment so the data will be rapidly changing and that may be a factor.
I know it can never be an exact science without intimately knowing the hardware/current loads etc but I also know that there's enough experience on these boards to have a loose handle on if the time shifts between queries are likely (or not) to be reflective of the stat changes or if those differences alone shouldn't (or typically wouldn't account) for it.
I'm thinking about instructing the query to ignore its original plan but am hesitant to do so without being a little more confident that it's not just a timing thing or something other than the change of index approach which may be causing the improvement. the autotrace stat changes observed I couldn't put my hand on heart say "yup - that change is good, ignore the default index all the time for this job".
Backup & Recovery :: Possible To Maintain Real Time Backup Using RMAN?
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View 1 Replies View RelatedSQL & PL/SQL :: Convert Oracle Joins To Ansi?
Apr 11, 2011the below merge statements has outer join.
merge into merge_st t
using (select * from merge_st1) src
on (t.id=src.id(+))
when matched then update set name=src.name;
I need to convert oracle joins to ANSI joins. I have tried below
update (select t1.name as t1_name,t2.name as t2_name
from merge_st t1 lef outer join merge_st t2
on(t1.id=t2.id))
set t1_name=t2_name;
It statements shows error like cannot modify the non key preserved tables.I have cheked these table has contains whether primary key or not.there is no constraints for these tables.Our application, constaints handle in front end. so we cannot create any constraints in oracel database.how to convert oracle joins to ansi join?
PL/SQL :: Are Truncate And Trunc SQL ISO ANSI Compliance
Jun 10, 2013which of the statements TRUNCATE and TRUNC are SQL ISO ANSI compliance ?is Truncate a function or a statement ?
View 3 Replies View RelatedSQL & PL/SQL :: Normal Join And Outer Join
Oct 19, 2013Lets say I have three tables t1 and t2 and t3.
SELECT * FROM T1;
Id
____
1
2
3
4
SELECT * FROM T2;
Id
____
1
SELECT * FROM T3;
Id
____
1
Now when data exists in T2 and T3, I want to return only the records in T1 that match the records in T2 and T3 which is basically a normal join
select t1.id from t1, t2,t3 where t1.id = t2.id and t1.id = t3.id
However when there are no records in T2 or T3, I want to return all records in T1 i.e 1,2,3,4
One way of doing that is using the not exists clause
select * from t1 where not exists ( select null from t2 where t2.Id != t1.id) and not exists ( select null from t3 where t1.Id != t3.id)
Is there a better way of doing this in sql ?
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Apr 12, 2013what is the best practice to implement in Indexing,is it global indexing or local indexing, I would like implement one of them in object that has been partitioned horizontally.i dont know exactly what to make of it.
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Jan 12, 2013We have an Implementation of Non-RAC (Single Instance with Existing ASM-RAC as storage) and below is the Details,
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Scenario:
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SQL & PL/SQL :: How To Implement Inner View Query
Apr 19, 2011SELECT
DISTINCT CUSTR.TRX_NUMBER trx_number,
CUSTR.TRX_DATE transaction_date,
(
SELECT
MAX(DECODE(fndcatusg.format,'H', st.short_text,NULL,st.short_text, NULL) )
FROM fnd_attachment_functions fndattfn,
[code]....
I have this above query i want to make this query like
SELECT
DISTINCT CUSTR.TRX_NUMBER trx_number,
CUSTR.TRX_DATE transaction_date,
CORRECTED_PROMISE_DATE
FROM
RA_CUSTOMER_TRX_ALL CUSTR
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View 1 Replies View RelatedSQL & PL/SQL :: How To Implement Trigger After Update
Jan 13, 2011SQL> CREATE OR REPLACE TRIGGER TRI_ABOVE_JOINTBOX
2 BEFORE UPDATE ON JOINT_BOX FOR EACH ROW
3 DECLARE
4 PRAGMA autonomous_transaction;
5 BEGIN
6 IF (:NEW.SCALE_X <> :OLD.SCALE_X) OR
7 (:NEW.SCALE_Y <> :OLD.SCALE_Y) THEN
[code]....
The above code is for the GIS project. When I am trying to implement the above trigger it is giving output in such a way that the joint box(which is point feature in the designed database) scale is fixed to 1 as written in the code,but it cannot be moved in the DGN(front end),this is because trigger is fired before update.
Actual intention is that the feature(joint box) need to move in the DGN then the trigger need to be fired so that then scale need to fixed to one even after changing.For that I implemented after update trigger in the above code,but then it is throwing error as
ORA-04084: cannot change NEW values for this trigger type. I guess this is because after update trigger cannot be implemented for bind variables old and new.
1.joint box can move in DGN(this can be acheived automatically if after implementing after update trigger).
2.after dragging in the DGN the scale to be fixed as 1.
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Server Utilities :: SQL Loader - How To Implement
Jul 7, 2010SQL Loader - How to implement/Best solution.
I have 3 tables with their columns:
- MASTER_TABLE - MASTER_ID, DATA;
- PARENT_TABLE_A - MASTER_ID, DATA;
- PARENT_TABLE_B - MASTER_ID, DATA.
And the file I need to import has lines like the ones below:
MMMASTER_TABLE1
PAPARENT_TABLE_A1
PBPARENT_TABLE_B1
MMMASTER_TABLE2
PAPARENT_TABLE_A2
PBPARENT_TABLE_B2
MMMASTER_TABLE3
PAPARENT_TABLE_A3
PBPARENT_TABLE_B3
The line means:
- 1 - M or P: indicates which table to insert: MASTER or PARENT;
- 2 - M or A or B: indicates MASTER, PARENT_A, PARENT_B;
- 3:18 - DATA.
Based on the values above, what I need to do is:
1. Load a line to MASTER_TABLE;
2. Load a line to PARENT_TABLE_A pointing to its relative line in MASTER_TABLE;
3. Load a line to PARENT_TABLE_B pointing to its relative line in MASTER_TABLE;
4. In the original file line, there is nothing I can use to join a MASTER line with a PARENT line.
The result would be:
MASTER_ID PARENT_DATA
1 PARENT_TABLE_A1
1 PARENT_TABLE_B1
2 PARENT_TABLE_A2
2 PARENT_TABLE_B2
I tried to use both: SEQUENCE and Sequence.NextVall (CurrVal) but they only work when using ROWS=1 and the file I need to load has millions of rows, so I need direct path loading.Also, I read about External Table, but it does not suit my needs because the Application server is not the same as Database server, which is needed by external tables.
in this case is better load the data to a temporary table and then insert to the other tables, I found almost the same question in the topic pointed by the link below: URL....
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Apr 28, 2011 I have tried to implement RLS policy of oracle.I have two Schema X1 & X1_DBA.
I have created the emp table in X1_DBA create table emp(empid number,ename varchar2(10),deptno number) and inserted some rows into the Table. i have created the below function in X1_DBA schema & Given Select Privilege to X1.
CREATE OR REPLACE FUNCTION no_dept10(
p_schema IN VARCHAR2,
p_object IN VARCHAR2)
RETURN VARCHAR2
[code]...
When i Add the Policy in X1_DBA.schema i am getting the Error as Table does not exist
SQL> BEGIN
2 DBMS_RLS.add_policy
3 (object_schema => 'X1',
4 object_name => 'EMP',
[code]...
ORA-00942: table or view does not exist
ORA-06512: at "SYS.DBMS_RLS", line 20
ORA-06512: at line 2
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