Finding Primary Key In A Table?
Oct 4, 2007Whats the command to show the name of the primary key in a table using oracle sql plus?
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SQL & PL/SQL :: Finding Nth Maximum Or Minimum From A Table?
Sep 17, 2011how can i find nth maximum or minimum salary from a employee table? here i want only one row as output.
View 16 Replies View RelatedSQL & PL/SQL :: Finding Percentage Using Query From Table Data
Jun 23, 2010SL_NoStatus
191502Implemented
191690Implemented
190998Implemented
191346Implemented
190541Implemented
[Code]..
my above table consists of two columnc sl_no and Status,col1 indicates the process no and the status indicates it is implemented or cancelled or failed during implementation.
i need to find the percentage of the implemented+cancelled process over failed..
test case:
lets consider,
A->count(Sl_NO)
B->Count(STATUS) where STATUS='Implemented'
[Code]..
i think i have satisfactorily given enough data.. make it out using sql query..
SQL & PL/SQL :: Finding Out If A Table Column Has Special Characters
Jul 15, 2010I have this table column of varchar2 data type. I need to find out if it contains anything other than numbers or alphabets(basically to see if it contains any special characters in it).
I just need to fetch only those rows that has special characters. How do I get this?
CREATE TABLE CHECK_SPL_CHARAC
(ADDRESS VARCHAR2(100));
INSERT INTO CHECK_SPL_CHARAC VALUES ('ABC%ABC');
INSERT INTO CHECK_SPL_CHARACVALUES ('ABC_ABC');
INSERT INTO CHECK_SPL_CHARAC VALUES ('ABC?ABC');
INSERT INTO CHECK_SPL_CHARAC VALUES ('ABC*ABC');
INSERT INTO CHECK_SPL_CHARAC VALUES ('1234');
INSERT INTO CHECK_SPL_CHARAC VALUES ('ABC');
INSERT INTO CHECK_SPL_CHARAC VALUES ('AB C');
INSERT INTO CHECK_SPL_CHARAC VALUES ('12 34');
COMMIT;
I need to get the first 4 rows alone in the sql output. I do not wan to get the last 2 rows with space.
SQL & PL/SQL :: Finding Child And Parent Rows In Table?
Jun 6, 2011I have table emp that contains empno, empname, mgr .what i want is a general procedure that will take empno as input and will give all the child rows and parent for entered empno.
for ex
E
A-->B-->C-->D
F-->G
H
When i will pass d as node it will return c,b,a,e,f,g,h
SQL & PL/SQL :: Oracle Table - Finding Transaction Logs?
Dec 9, 2010How can we see the history of transactions on a table.
For eg, If I have a table called TEST123, I would like to know whatever SQLs fired on that table on today.
SQL & PL/SQL :: Finding User Who Made Changes In Table Structure Or Schema
Sep 21, 2011i want to find the name of user who make changes in the table structure or create any index or constraint or unique key or alter the column? Is there any way to find in Oracle. in which table what change has been done as well?
following Output needed
userid, username, schemaname, schemachangetime, "what_change_has_been_made", IP address or Computername
SQL & PL/SQL :: Finding Maximum Value Of Two Independent Columns Of Single Table
Jan 18, 2012The challenge I am currently facing is finding the maximum value of two independent columns of a single table. Here is the structure of the table:
[FiscalYear] [AccountingPeriod]
------------ ------------------
[2012] ------------- [2]
[2011] ------------- [12]
[2012] ------------- [1]
What I need to be able to do is to:
1) Determine the maximum value present in column FiscalYear, and then the maximum value available for this FiscalYear under the column Accounting Period.
I can do this fairly easy on Microsoft SQL server, but so far was not able to do this easily on Oracle database. My other observation is that using the MAX function on Oracle is very slow (even with thse fields being indexed). Is it possible to run this query on Oracle with only one pass through the table where the returned result will show 2012 for FiscalYear, and 2 for Accounting Period?
SQL & PL/SQL :: Finding Next Record In Cyclic Order In Table Using Sequence
Sep 4, 2010I have a table as below:-
CREATE TABLE TEST_EMP_WIP
(
EMP VARCHAR2(20 BYTE),
WIP NUMBER,
MAX_SEQUENCE NUMBER
)
[Code]....
EMP WIP MAX_SEQUENCE RANK
002 2 2 1
003 1 4 2
005 3 5 3
010 1 4
011 1 5
I have to find the next EMP whose MAX_SQUENCE needs to be updated with a sequence. In this case the next would be '010' I fetched the EMP who falls after the max value of the column max_sequence in order of EMPCODE.
select emp_next from (
SELECT emp,max_sequence, LEAD(emp, 1, 0) OVER (ORDER BY emp) AS emp_next
from test_emp_wip where wip > 0 )
where max_sequence=(select max(max_sequence) from test_emp_wip where wip > 0)
EMP_NEXT
010
After sometime, the record would look like :-
EMP WIP MAX_SEQUENCE RANK
002 2 2 1
003 1 4 2
005 3 5 3
010 1 6 4
011 1 7 5
Now the next update should be done to the EMP '002' in cyclic manner.
tell me a way to do this. I can insert new columns if needed in table for calculation.
SQL & PL/SQL :: Finding Record In Table Having Value For Maximum Number Of Columns
Nov 25, 2011if there is any inbuilt function or way to find a row in the table that is having value for maximum number of columns.
For example, the table A has 5 columns
(c1,c2,c3,c4,c5) and it has 3 records(r1,r2,r3)
and
r1 has values only for c1,c2
r2 has values only for c1,c2,c3,c4
r3 has values only for c1
so I should get the result as "r3 has values for 4 columns & it is not having value for column c5".
SQL & PL/SQL :: Primary Constraint On Table Affecting Procedure To Insert Rest Of Rows In Table?
Jun 12, 2012primary key constraint on transaction_dtl_bk is affecting the insertion of next correct rows.
CREATE OR REPLACE PROCEDURE NP_DB.san_po_nt_wnpg_1 (
dt DATE
)
IS
v_sql_error VARCHAR2 (100); -- added by sanjiv
v_sqlcode VARCHAR2 (100); ---- added by sanjiv added by sanjiv
[code]...
All Columns Of A Table Are Part Of Primary Key Column Of That Table?
Feb 22, 2011if a table contains two columns and both are part of the primary key of that table (Kind of obvoius).
should i opt for a index organized tbale in this case ?Or should i opt for another running sequential colum which would serve as a primary key of this table and define the actual two columns of the system as unique keys.
there is a drawback if a most of the tables of a database contain composite primary keys?
SQL & PL/SQL :: Table Partitioning With No Primary Key
Jan 24, 2013we apply partitioning concept on a table which don't have any primary key ?
I just want to add one more field as primary key with some sequence generated values while partitioning ? Is it possible ?
Add Partial Primary Key Into Oracle Table?
Oct 17, 2006how to add a primary key into the oracle table but how do i add a partial primary key?
View 2 Replies View RelatedSQL & PL/SQL :: Audit Table With Primary Keys?
Feb 19, 2013I need to copy the changed and deleted data in an other table. I have searched this site ,asktom and other sites also. I found the following solution from asktom website. But it gives me the changed columns data only and i need the primary key with changed data and deleted rows also.
DROP TABLE emp;
CREATE TABLE emp AS (SELECT * FROM scott.emp);
CREATE TABLE audit_table
[Code].....
SQL & PL/SQL :: Update Table With Primary Key In Where Clause
Dec 11, 2012Is is required to check the number of rows updated in a table when the primary key of the table is used in the filter criteria of the update statement? As I know,by default it will update only one record. But if it happens to be an important transaction table and only one record is required to be updated, then is it the best practice to use the 'SQL%ROWCOUNT' check in the query, even if the update query is using primary key in filter clause.
Example:Consider Trans table with trans_id as primary key. Then:
Update Trans
set trans_status='pass'
where trans_id=123;
I know this will update only one record. But what is the best practice? Shall I use 'SQL%ROWCOUNT' after this update to double check whether the record is updated or not?
SQL & PL/SQL :: Primary Key On Table Having Some Duplicate Record?
Jul 14, 2010Is it possible to apply primary key on table having some duplicate record?I can do this by deleting duplicate record, But I don't want to delete exisitng data.
View 10 Replies View RelatedHow To Reorganize A Table In-order Of Primary Key
Jul 13, 2010I would like to reorganize a table inorder of primary key but I'm not sure if I'm expecting the right thing from dbms_redefinition package.
I am working on oracle 9i 9.2.0.8
I have the following table :
SELECT * from SCOTT.TESTTABLE
ID REF
---------- ----------
1 FF
2 BB
3 CC
4 DD
8 EE
6 ZZ
7 YY
5 GG
when I use the CODEexec dbms_redefinition.start_redef_table('SCOTT', 'TESTTABLE', 'TESTTABLE2', 'id id, ref ref', dbms_redefinition.cons_use_pk);
Would the newly created scott.testtable be created in order of primary key (ID) thus a select * from scott.testtable will give me an ordered result?
When I do the test, the table before and after the redefinition is exactly the same so why use the CONS_USE_PK if it doesn't order the table by primary key?
Performance Tuning :: Table Partitioned With Primary Key
Aug 4, 2010I have normal tables with hugh Data and would like to increase the performace by following means:
1) Add a new column in each table. Say this column Name is IS_LIVE. This new column have only two value 1 ( LIVE ) OR 0 ( NOT LIVE ).
2) Change the normal tables to Partitioned table. There would be only two partitioned in all the table. The partitioned key column would be IS_LIVE and both partitioend recrods would be in two different tablespace.
3) Added a POLICY function to these partitioned table to Always add a Query Predicate of '1' to all queuries.
I am interested to know that what kind of Indexes ( Global Or local ) would be suitable for these kind of Design.Is there any use of having Local index on IS_LIVE.Please note that Primary Key doesnot have this new column in it.
SQL & PL/SQL :: Add Composite Primary Key To Table That Has Self Referencing Foreign Key
Jan 21, 2012I have an employee table which has a primary key and a self referencing foreign key, as shown here
create table employee (
id not null,
name not null,
department not null,
supervisor_id not null
,constraint constraint_1 primary key (id)
,constraint constraint_2 foreign key (supervisor_id) references employee (id));
Now if i make the primary key composite, as shown below -
create table employee (
id not null,
name not null,
department not null,
supervisor_id not null
,constraint constraint_1 primary key (id, name)
,constraint constraint_2 foreign key (supervisor_id) references employee (id));
Oracle is throwing the following error -
ORA-02270: no matching unique or primary key for this column-list
How can this error be fixed without changing the composite primary key?
SQL & PL/SQL :: How To Have Procedure Populate Staging Table Primary Key
Jun 6, 2012I've a staging table STG_TABLEA which has a primary key discount_seq_no.
I am creating a pl/sql procedure to populate a primary key (discount_seq_no) with a database sequence. The intent is to keep this populated with next value incrementing by 1.
I am using Oracle 11.2.0.2 version.
I've put together the below code, not sure on next steps...
BEGIN
UPDATE STG_TABLEA
SET A.DISCOUNT_SEQ_NO = "INSERT A SEQUENCE HERE AND KEEP INCREMENTING the seq value by 1
COMMIT;
EXCEPTION
WHEN OTHERS
THEN
RAISE;
END;
SQL & PL/SQL :: Create Primary Key Using Local On Partitioned Table?
Mar 2, 2012I have to create primary key using local on a partitioned table.
Since the table is huge it has to be done parallel. Following stmt is giving error
alter table XYZ add CONSTRAINT PKN_XYZ PRIMARY KEY (ID,LogDtTm)
USING INDEX LOCAL parallel 25 INITRANS 5 TABLESPACE OLTP_IDX_TS ;
SQL & PL/SQL :: ORA-12014 / Table CDA_FUNCTION Does Not Contain A Primary Key Constraint
Dec 9, 2010I am trying to create snapshot using the following script but I am getting the error
ERROR at line 22:ORA-12014: table 'CDA_FUNCTION' does not contain a primary key constraint
SQL> CREATE SNAPSHOT MEDA.cda_function
PCTFREE 10
PCTUSED 40
MAXTRANS 255
TABLESPACE users
STORAGE (
INITIAL 40960
[code]....
I check in dba_constraint data dictionary table for the constraints in the table CDA_FUNCTION.it is showing as follows
owner constraint_name constraint_type table_name search_condition status deferrable deferred validated generated
WEDA SYS_C0032310 C CDA_FUNCTION (LONG) ENABLED NOT DEFERRABLE IMMEDIATE VALIDATED GENERATED NAME
WEDA SYS_
PL/SQL :: Data Dictionary To See Foreign And Primary Key Of Table
Feb 17, 2013which data dictionary should i choose to see the foreign key and primary key of table
View 2 Replies View RelatedServer Administration :: Enabling Primary Key On A Big Table
Jun 22, 2012I have a partioned table that has close to 2 billion rows and a PK of all columns. Becuase of time constrains my APP team wants the PK disabled while they pump into hundreds of thousands of rows with a batch process.
Now I am finding when I enable the PK its eating up close to close to 200GB of temp space.
Is there something I can do to reduce the amount of temp space being used?
SQL & PL/SQL :: Create Normal Primary Constraint During Table Creation
Mar 23, 2010i'm new to oracle environment.how can i specify NONCLUSTERD INDEX on Primary cloumn during table creation.By default it will create clusterd index but i need non-clusterd index on it.
I'm using following stmt to create normal primary constarint during table creation,
CONSTRAINT PKFORM_PROPS PRIMARY KEY (FORM_PROPS_PK) USING INDEX TABLESPACE DB123_INDEX
how can i change the above query, so that it should create NONCLUSTERED INDEX on Primary key column.
SQL & PL/SQL :: How To Copy Constraints (primary / Foreign Key / Indexes) To A Table
Mar 11, 2011I have created table as below
create table emp_temp as select * from emp;
the table is created, but the constraints are not copied. Is there any way to copy all the constraints.
SQL & PL/SQL :: Query To Find Number Of Primary Keys Present In A Table?
May 17, 2011is there any query to find number of primary keys present in a table.
View 13 Replies View RelatedPerformance Tuning :: How Expensive (speed) Is Unique Versus Primary Key In Large Table
Aug 15, 2011I 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).
Server Administration :: Splitting Table Partition Without Making Primary Key Index Unusable?
Apr 8, 2013splitting a table partition without making its primary key index ar any other indexes unusable.
I think it is possible to do so 10g onwards.
DB Details:
Oracle RDBMS 11.2.0.3, HP-Ux B.11.31, OLTP