PL/SQL :: Getting Unique Records From Table
Aug 24, 2012
Oracle Database Version is 10g ( 10.2.0.4.0)
I have two table emp_perm & employee.
1) Table emp_perm is a lookup table with 2 columns, temp VARCHAR2 & perm VARCHAR2.
Table emp_perm have below data in it:-
temp perm
1064885 0349034
0099982 7399982
6476456 9170346
5252525 52525252)
Now table employee might have following combinations of rows.
Records for both Temps file (1064885) and perm file number (0349034) does exist in employee table, in this case Delete Temp File Number records i.e. 1064885 and keep Permanent File Number (0349034) records as it is.
Records for only temp file number(0099982) does exists and corresponding perm file(7399982) does not exists in employee table in this case convert these records i.e. update 0099982 with its perm file number 7399982 using lookup table emp_perm.
Records for only perm file number exists (9170346) and corresponding temp file number (6476456) does not then do not amend employee table, as we are interested in perm file numbers.
If file number does exist in lookup table in emp_perm and both of them are equal (5252525) then do not amend employee table as temp and per file number are same.
View 5 Replies
ADVERTISEMENT
May 10, 2013
i have 20000 records from text file.here i want to read only unique records from text file using collections.
View 3 Replies
View Related
Feb 11, 2011
Can a table conatin composite Alternate key which is not unique for each record in that table i.e combination of these columns have unique values which are repeated for one or more rows in that table.
View 8 Replies
View Related
Jun 1, 2010
I am trying to update records in the target table based on the records coming in from source. For instance, if the incoming record is present in the target table I would update them in the target else I would simply insert. I have over one million records in my source while my target has 46 million records. The target table is partitioned based on calendar key. I implement this whole logic using Informatica. Looking at the informatica session log I find that the informatica code is perfectly fine but its in the update part it takes long time (more than 5 days to update one million records). find the TARGET TABLE query and the UPDATE query as below.
TARGET TABLE:
CREATE TABLE OPERATIONS.DENIAL_REGRET_FACT
(
CALENDAR_KEY INTEGER NOT NULL,
DAY_TIME_KEY INTEGER NOT NULL,
SITE_KEY NUMBER NOT NULL,
RESERVATION_AGENT_KEY INTEGER NOT NULL,
LOSS_CODE VARCHAR2(30) NOT NULL,
PROP_ID VARCHAR2(5) NOT NULL,
[code].....
View 9 Replies
View Related
Aug 2, 2011
I have created a table below, my TL asked me to create a local unique constraint for the below table.
I went through all sites and could not find the correct solution, how to create LOCAL UNIQUE CONSTRAINT ON SUB PARTITION TABLE and LOCAL UNIQUE INDEX ON PARTITION TABLE. Creating Local Unique constraint should take care of creating local unique index creation.
Unique key columns are DET,GDS,ARRIVE_DT
CREATE TABLE SUB_PAR_TAB
(
ID VARCHAR2(100) NOT NULL,
REGION VARCHAR2(40) NOT NULL,
SOURCE VARCHAR2(80) NOT NULL,
DET VARCHAR2(80) NOT NULL,
GDS VARCHAR2(40) NOT NULL,
ARRIVE_DTDATE,
SYS_SOURCE VARCHAR2(25) ,
[code]........
View 5 Replies
View Related
Sep 13, 2013
I have a table with a non-unique index consisting of three columns. The first column is not null while the remaining two are nullable. Queries using this index will chiefly be made in two ways.
1. Column one and two having values. Column three is null.
2. Column one and thre having values. Column two is null.
In both cases I expect range scan will be used since it's non-unique. In the first case the scan will be on values in column one and two. But what happens in case two. Will the range be on colum one, column two(being null) and cxolumn three? Or will it be on just column one since the second column is null? I have done some testing. I can see , using EXPLAN PLAN, that range scan is used in both cases. how the index is used?
Is there any other drawbacks with an index like this?
View 13 Replies
View Related
Aug 5, 2013
Create a function which will indicate if a given record in a table is unique or not. Unique means the data is occurring only once in the entire table.
Function should be in this signature
function IS_UNIQUE (tableName in varchar2,tableAttribute in varchar2)
return number
.....
begin
//logic to check if given data is unique
return 0; //return 0 if data is unique
else
return 1; //return 1 if data is duplicate
end;
Once I run this query
select attribute1 from table1 where IS_UNIQUE(table1,attribute1)=0
All records of attribute1 which are unique need to be fetched. Similarly, select attribute1 from table1 where IS_UNIQUE(table1,attribute1)=1 should return all records of attribute1 which are duplicates.
View 13 Replies
View Related
Dec 9, 2011
I am stuck with this query.
I have a table "xyz" as -->>
SQL> select * from xyz;
A B
---------- ----------------------------------------
1 Hello
2 Hello
3 No Hello
4 No Hello
5 Hello
6 Hello
7 Hello
I want to print the output of this table as -->>
A B
---------- ----------------------------------------
1
2 Hello
3
4 No Hello
5
6
7 Hello
To make it more clear, I just want that whenever the value f column "B" changes then only its value should be printed, else it should be NULL. And if "B" has same value for all the records then the value of "B" should be printed at the last.
Either of SQL or PLSQL would d for me.
View 11 Replies
View Related
Aug 14, 2013
Using Oracle 11g, below is the table, partitions, unique and non-unique local index:
CREATE TABLE DOCA( DOCA_ID NUMBER NOT NULL , DOCA_BKG_PAX_ID NUMBER NULL , ROW_PURGE_DATE DATE NULL ,)PARTITION BY RANGE(ROW_PURGE_DATE)INTERVAL(NUMTOYMINTERVAL(1, 'MONTH'))( PARTITION P2007 VALUES LESS THAN (TO_DATE('01/01/2008', 'dd/mm/yyyy')), PARTITION P200801 VALUES LESS THAN (TO_DATE('01/02/2008', 'dd/mm/yyyy')),) TABLESPACE T0; ALTER TABLE DOCA ENABLE ROW MOVEMENT;
CREATE UNIQUE INDEX XPKDOCA ON DOCA( DOCA_ID ASC, ROW_PURGE_DATE ASC)LOCALREVERSE TABLESPACE I0; ALTER TABLE DOCA ADD CONSTRAINT XPKDOCA PRIMARY KEY (DOCA_ID); CREATE INDEX XFKDOCA_DOCA_BKG_PAX_ID ON DOCA( DOCA_BKG_PAX_ID ASC)LOCALREVERSETABLESPACE I0;
I would like to know the difference between the performance of the unique and non-unique local indexes?.
View 10 Replies
View Related
Aug 15, 2011
I have two design alternatives and need to understand how expensive (speed) is one of them against the other for a medium size table (100K-200K records):
create table xyz
(
f1 number not null,
f2 varchar2(20) not null,
f3 number not null,
f4 varchar2(50),
[code]....
the idea is to optimize the design by using a PK instead of the 3 keys and there is a debate that searching a unique index field(2nd scenario) is of the same speed than searching a PK field (1st scenario).
View 5 Replies
View Related
Feb 7, 2012
We deleted millions of records from a table.
1.Is it necessary to reorganize a table and index after the deletion of records from table ? Because i see some change in table size after table and index reorganization.
2.Will re org table and index improve the database performance ?
View 7 Replies
View Related
Jul 17, 2013
Oracle 11gI have a large table of 125 million records - t3_universe. This table never gets updated or altered once loaded, but holds data that we receive from a lead company. I need to select records from this large table that fit certain demographic criteria and insert those into a smaller table - T3_Leads - that will be updated with regard to when the lead is mailed and for other relevant information. select records from this 125 million record table to insert into the smaller table.
I have tried a variety of things - views, materialized views, direct insert into smaller table...I think I am probably missing other approaches. My current attempt has been to create a View using the query that selects the records as shown below. Then use a second query that inserts into T3_Leads from this View V_Market. This is very slow. Can I just use an Insert Into T3_Leads with this query - it did not seem to work with the WITH clause? My Index on the large table is t3_universe_composite and includes zip_code, address_key, household_key.
CREATE VIEW V_Market asWITH got_pairs AS ( SELECT /*+ INDEX_FFS(t3_universe t3_universe_composite) */ l.zip_code, l.zip_plus_4, l.p1_givenname, l.surname, l.address, l.city, l.state, l.household_key, l.hh_type as l_hh_type, l.address_key, l.narrowband_income, l.p1_ms, l.p1_gender, l.p1_exact_age, l.p1_personkey, e.hh_type as filler_data, 1.p1_seq_no, l.p2_seq_no , ROW_NUMBER () OVER ( PARTITION BY l.address_key ORDER BY l.hh_verification_date DESC ) AS r_num FROM t3_universe e JOIN t3_universe l ON l.address_key = e.address_key AND l.zip_code = e.zip_code AND l.p1_gender != e.p1_gender
[code]....
View 2 Replies
View Related
Mar 25, 2013
following is the requirement
External Table
WKSHT_FILE_EXT
wksht_line
Export Table
Wksht_export
global_idvarchar2(10)
wksht_linevarchar2(250)
[code]....
Step 1.Insert all records from the external table into the export table. Truncate the export table first
Step 2.Read in a record from the export map table
Step 3.Search through export table records looking for the key words BRANCH =. Compare the branch code with the branch code form the map table
Step 4.If a match is found mark all records in the export table for the worksheet with the global ID from the export map table as follows..The first line of a worksheet is marked by the words WKSHTS..The last line of the work sheet is marked by the words COMPANY CONFIDENTIAL..We will need to capture the line break so also mark the next line after the COMPANY CONFIDENTIAL line
Step 5.Continue with Steps 2 - 4 until all records have been processed from the export map table.
first I have to create a procedure ti insert data from external table to export table.Global id will be blank.it will be updated by the mapping table's Global Id when The EB COLUMN's data(i.e 8p,2Betc ) will match with the BRANC=NA,2Betc of the datasheet loaded from the external table.. FOLLOWING IS THE SAMPLE DATASHEET
WKSHTS AAAAA BBBBBBBBBBB ELECTRONICS INC. TIME REPORT-DATE PAGE
SORT - BR, SLSREP AEC FIELD SALES REPRESENTATIVE 16:14 09/21/12 1
BRANCH = 2B
EMPLOYEE NAME SALVAAG, GREGG Days in the Month 28
[code]....
THERE ARE 2 pages..I have to split this LONG REPORT STORED IN WKSHT_LINE COLUMN OF EXPORT TABLE to 2 records..like wise 500 pages are there means 500 records.. AND THEN FIND BRANCH= after that which two words will come i.e NA,2B etc if it will MATCH WITH MAPPING TABLE"S EB COLUMN"S DATA,THEN MAPPING TABLE's GLOBAL ID WILL BE UPDATED TO EXPORT TABLE's GLOBAL ID WHICH IS BLANK
View 1 Replies
View Related
Mar 9, 2004
Trying to auto insert the newest records from one table into another Table. I have a vendor provided table that is part of my database (running Oracle 9i) so I can't change the underlying structure to it or their process stops fluxing. However, I can add a trigger to it. What I want to do is this:
When the vendor's software inserts a new row (through their own automated process) I want to insert data from that same new record into another table of my own. (where of course I can re-format it, etc., and make the data my own)
The original vendor table does not have a insertion timestamp field to work off of.What is the best way to trigger an insert off the latest inserted record? It works to replace all the records in the entire vendor table but I only want to insert one record at a time.
View 2 Replies
View Related
Jan 23, 2013
I have got a procedure that successfully creates an oracle external table and populates it with the contents of a file. This works fine until I have a situation where one of the fields is a VARCHAR2(2) and I try to insert say, a 5 character value. When this happens the record in question does not get populated in the external table (and rightly so), but I could do with working out if there is a discrepancy in the number of records in the file and the number of records that actually make it into the table so I could inform the user that there is a problem.
I have attached the code that creates the external table and populates it.
View 5 Replies
View Related
Apr 21, 2011
I have requirement like we need to send records from one table to another table. for example if i have 4 records in Table A , first i need to send only 2 records to Table B then again rest 2 records to the Table B.
View 10 Replies
View Related
Aug 10, 2011
I have a personname table which contains records of millions Person-names. My application has a requirment to return "any" 200 names that match the given Firstname and lastname entered by user.note the NOT actually "top-n", but "Any-N" , i.e. user wants "any" 200 names and NOT in any "specific order".
which is the best option to make most efficient search --
1) rownum < 201
2) row_num()
3) rank/denserank etc
View 3 Replies
View Related
Jun 23, 2010
I am dealing with a table containing millions of records. I have table loans_list table and he data looks similar to this..
LOAN_IDSEQUENCE_NUMCOMPLETE_DATE
1237000
1237005
1237010
5237010 6/23/2010 10:07:02 AM
5237000 6/23/2010 10:07:02 AM
12237000
I am trying to select only those loan_id from this table which contain all these 3 sequence_num = 7000,7005,7010 and containing null compelete date. I tried different way to write the query but can't think of efficient way of writing this query yet.
Since this table contain million of records, i dont prefer to call this table more than once in a query. I am just trying to avoid the longer time delay for the execution of this query..
View 7 Replies
View Related
Mar 16, 2012
We have a table which gets updated on a daily basis. We need to manage the records with the retention period of 30 days and move the remaining records to another table.
I understand that we can use "select insert" statement and then the "delete" statement to achieve this. Is there any sql to directly move the records to another table rather than inserting and then deleting?
View 1 Replies
View Related
Jul 18, 2012
I want to insert 10 records from table a to table b. If i m using statement level trigger how many record insert?In row level trigger how many record inserted?
View 2 Replies
View Related
Oct 3, 2013
how to display all the records in a table ,i am passing the table name as in param to the procedure/function suppose if i pass emp table name it will display 14 rec, if i pass dept it will display 4 records.
View 3 Replies
View Related
Aug 19, 2010
I'm selecting a set of records from one table, for example: ID, description and date. From this I'm only wanting the latest inserted row. I've used the max function on the date which is fine, however, there are some records that have had their description changed. This then returns two values for one ID, the max for the original description and the max for the changed description.
I'm getting:
ID |Description |Date
1 ABC 01/01/2010
2 XYZ 02/03/2010
2 XYZ1 03/05/2010
When I want:
ID |Description |Date
1 ABC 01/01/2010
2 XYZ1 03/05/2010
As ID 2 with XYZ1 Description is the very latest row for that ID.
This is an audit table so the ID appears on numerous rows as it a composite key with date.
View 1 Replies
View Related
Mar 11, 2013
We have table, which maintain log record of gl table. I don't know how much data exist in that table but problem is taking too much time while counting whole records.
View 11 Replies
View Related
Nov 15, 2010
I need to get the timestamp for all the existing records in my table...I am having one user definition field, is this possible?
View 4 Replies
View Related
Feb 2, 2012
I'm working with Oracle 10g.
I have a table like this;
ID Amount Date
123 5000 Oct-07-2011
123 null Oct-09-2011
124 7000 Oct-14-2011
124 null Oct-17-2011
124 null Oct-24-2011
What I'm trying to do here is loop thruogh the records and update the amount that's null with the previous amount with the same ID.
View 3 Replies
View Related
Apr 9, 2008
How to validate a sum of some records in a table to be exact value?
I want to guarantee that sum(val_column)=100 at database level. Check constraints out of question. Trigger before update statement disable any update to that column when incrementing one row and decrement another... (unless with for all...)
View 3 Replies
View Related
Apr 29, 2013
Consider tables A,B,C,D,E,F. all are having 100000++ records Tables B,C,D are dependent on table A (with foreign key constraint). When I am deleting records from all tables, table B,C,D are taking max 30-40 seconds while table A is taking 30-40 mins. All tables are having indexes.
Method I have used:
1. Created Temp table
2. then deleted all records from B,C,D,E,F for all records in temp table for limit of 500.
delete from B where exists (select 1 from temp where b.col1=temp.col1);
3. why it is taking too much time for deleting records in table A.
View 5 Replies
View Related
Sep 28, 2011
Below is my requirement,
Source Table: SRC
COL1 DATE_CREATED CREATED_BY
1 27-SEP-2011 GURU
1 28-SEP-2011 SANKAR
Target Table:TGT
COl1 DATE_CREATED CREATED_BY
1 28-SEP-2011 SANKAR
I need to take the MAX of date_created record and store it in target.
I tried,
select max(date_created), col1, created_by from src
group by col1, created_by,date_created
Which is giving me 2 records which i don't want. How to get only one record out of that source table?
View 2 Replies
View Related
Jun 13, 2011
We have a table, to which daily we insert 100 records. if we want to know recently or today inserted records from that table.
View 3 Replies
View Related
Nov 4, 2009
CREATE TABLE "SCOTT"."SEATALLOTMENT"
("YEAR" NUMBER(4,0),
"COLLEGECODE" CHAR(4 BYTE),
"COURSECODE" CHAR(3 BYTE),
[Code].....
Now i want to UPDATE reducing the AVAILABLE column by 1 in COURSESEATS table based on common columns collegecode,coursecode for a ROW inserted into SEATALLOTMENT table ,i am confused to what approach i have to follow whether its a procedure or a trigger
CASE:
Here in this case as i insert a row with krcl,cse as college code and course code respectively into seatallotment table the available column in courseseat table for the respective row with mentioned common column must become 59 from 60
View 5 Replies
View Related
