SQL & PL/SQL :: Create Primary Key Without Creating Index?
Jul 12, 2012how to create a primary key with out creating an index?
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SQL & PL/SQL :: Create Primary Key On View And Use This View For Creating Foreign Key?
Oct 8, 2010is it possible to create primary key on view and use this view for creating foreign key .
View 3 Replies View RelatedSQL & PL/SQL :: Index Related To Primary Key
Jul 12, 2012What is the default key created when a primary key is created in a table ?
View 1 Replies View RelatedCreating List Of Items And Using Foreign Keys As Primary
May 19, 2007How can I create a list of items in a field, for instance lets say I have a table called car and one of the sub categories is parts. How can I make it so that parts can be any number of pre-defined entities? Or even table, for instance if I make a table called parts how can I use that in the car table in place of parts?
My second question is about using foreign keys as primary keys. If I am writing an email sql DB and I decided to use the members usrname as the primary key in the member table but then made another table that lists all the emails and decided to make the foreign key member username the primary key there.
Is that safe to do or should i create a sequence in which to identify a primary key for the email list table? Also what if I extend member to several other tables and use it as a primary key there too, seems like a kind of dangerous way to do things...
PL/SQL :: Assign Partitioned Index To Primary Key
Jan 25, 2013create table mypart(a number, b number, c number, p_key number) PARTITION BY RANGE (p_key)
( PARTITION p0 VALUES LESS THAN (18),
PARTITION p1 VALUES LESS THAN (29),
PARTITION p3 VALUES LESS THAN (MAXVALUE)
) ENABLE ROW MOVEMENT;
create index idx_mypart on mypart(p_key,a,b)
I want to create primary key on this table that will use the local partitioned index idx_mypart
can I do that ?
alter table mypart add constraint pk_mypart primary key using index (idx_mypart)
above syntax gives error
basically the primary key should make use of the local partitioned index.
SQL & PL/SQL :: Create Non-cluster Index On A Clustered Index?
Jul 11, 2012Can we create non-cluster index on a clustered index?
View 5 Replies View RelatedServer 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
Creating Index On Hashed Column
Sep 23, 2010I currently have a 5 column index on a table with over 2 billion records (paritioned on created_date (weekly) that is not very effective.I am contemplating replacing this 5 key index and creating a new single column index made up by hashing of all the 5 five columns.
Is this a wise stratgey? How can I implement this so it is most effective and I dont shoot myself in the foot?
Creating A Multi Column Index
Jan 24, 2012I have in my database (OLTP-System) a table with about 6000000 records and a zise of about 2GB.
the way to create multi_column indexes on the table?
What are the rule to define the best-position of a column in an index?
index_1(col_1,Col_2,col_3) and not [ (col_1,Col_3,col_2) or (col_2,Col_3,col_1) or (col_2,Col_1,col_3) or (col_3,Col_2,col_1) or (col_3,Col_1,col_2) ] ?
PL/SQL :: Compute Statistics After Creating Index
May 15, 2013I have to create some indexes in a production database. Do I need to Compute Statistics after creating indexes? Or when I create they automatically are computed?
The version I'm using is:
Oracle Database 10g Release 10.2.0.5.0 - 64bit Production
PL/SQL Release 10.2.0.5.0 - Production
CORE 10.2.0.5.0 Production
TNS for 64-bit Windows: Version 10.2.0.5.0 - Production
NLSRTL Version 10.2.0.5.0 - Production
PL/SQL :: How To Create Primary Key Like W1
Jul 10, 2012primary key should be
W1
W2
W3 like this.
1,2,3 are sequence numbers.
SQL & PL/SQL :: What Should Be Order Of Columns While Creating B-tree Non-unique Index
Jul 19, 2012What should be the order of columns while creating b-tree non-unique index.
Low cardinality first
or
Hight cardinality first
Forms :: Create Unique Primary Key
Nov 28, 2010A Master form in a tabular format. Id is a display item. I want to auto generate Id with following query.
select nvl(max(issue_id),0)+1 into :issue_mt.issue_id from issue_mt;
It works:
1)When each record is saved before creating new record.
It doesn't work:
2)If multiple records are entered with out saving each record.
What to do to generate unique Id in both cases?
Performance Tuning :: Creating Index On Base Tables Of A View?
Dec 9, 2010I have a view on base tables holding historical data for previous 60 months(one table per month) with union all operators.create index on those base tables will improve performance or creating a primary key with disabled novalidate will improve for retrieving data?
The view has around 8 million data and used as a fact table with 4 dimension tables.A DTS package from MSSql side refreshes OLAP cube by retrieving data from these tables in oracle.
Text :: Creating Single Context Index On One-to-many And Lookup Table?
Apr 16, 2013I've been successfully setting up text indexes on multiple columns on the same table (using MULTI_COLUMN_DATASTORE preferences), but now I have a situation with a one-to-many data collection table (with a FK to a lookup table), and I need to search columns across both of these tables. Sample code below, more of my chattering after the code block:
CREATE TABLE SUBMISSION
( SUBMISSION_ID NUMBER(10) NOT NULL,
SUBMISSION_NAME VARCHAR2(100) NOT NULL
);
CREATE TABLE ADVISOR_TYPE
[code]...
I've looked at DETAIL_DATASTORE and USER_DATASTORE, but the examples in Oracle Docs for DETAIL_DATASTORE leave me a little bit perplexed. It seems like this should be pretty straightforward. I'm trying to avoid creating new columns, and keeping the trigger adjustments to a minimum.
Primary Key Does Not Treat NULL Value - Can Create Statement?
Feb 21, 2012Create table X(
var1 varchar2(20) null,
var2 varchar2(20) not null,
constraint pk_var1 primary key(var1)
We all know Primary key doesnt treat NULL as a value. But the above statement is fine to be executed without problem.
Is this something to be highlighted? or am i not right in understanding 'var1 varchar2(20) null '?
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 ;
Right Parameter Types Of ODCIIndexInsert In Case Of Creating Index-type WITH ARRAY DML?
Sep 17, 2013During developing Domain Index for Oracle 11.2.0.1.0 (problem also appears in 12с) i was faced with misunderstanding of parameter types of function ODCIIndexInsert in case of creating indextype WITH ARRAY DML option.According to Oracle documentation [URL}...
In case of WITH ARRAY DML option Oracle will invoke ODCIIndexInsert with following signature
FUNCTION ODCIIndexInsert(
ia ODCIIndexInfo,
ridlist ODCIRidList,
newvallist varray_of_column_type,
env ODCIEnv)
RETURN NUMBER
In my case indexed column has datatype NUMBER so i defined varray_of_column_type as SYS.ODCINumberList STATIC FUNCTION ODCIIndexInsert(ia in sys.ODCIIndexInfo, ridlist in sys.ODCIRidList, newvallist in sys.ODCINumberList, env in SYS.ODCIEnv) RETURN NUMBER
Indextype was created as
CREATE INDEXTYPE test_index_type
FOR
test_eq(number, number)
USING index_methods
WITH ARRAY DML(number, sys.ODCINumberList)
[code]...
(problem occurs in all cases)
CREATE TABLE test_table (id NUMBER (19,0));
CREATE INDEX test_index ON test_table(id) INDEXTYPE IS test_index_type;
When attempting to insert data in the table insert into test_table values (1);
oracle raise exception
CODEError starting at line 53 in command:
insert into test_table values (1)
Error at Command Line:53 Column:1
Error report:
[code]...
So my question is.Is it normal behavior of oracle (according to documentation)?What is correct signature of ODCIIndexInsert function in case of INDEXTYPE creation with 'WITH ARRAY DML' option and fact that indexed column has NUMBER datatype?
By the way if i define indextype without 'WITH ARRAY DML' option signature is clear, and working. But this approach doesn't satisfies our performance needs.Also if i define index type with option 'WITH ARRAY DML WITHOUT COLUMN DATA' and use signature static function ODCIIndexInsert(ia sys.odciindexinfo, ridlist sys.odciridlist, env sys.ODCIEnv) return number
Everything works too. But this approach doesn't satisfies our business needs.Is it a way to define ODCIIndexInsert parameter types (in case of indexing number column) so that batch inserting works according to documentation ?
FUNCTION ODCIIndexInsert(
ia ODCIIndexInfo,
ridlist ODCIRidList,
newvallist varray_of_column_type,
env ODCIEnv)
I am attaching full sql script to recreate environment and reproduce the problem.Type definition:
CREATE OR REPLACE TYPE index_methods AS OBJECT
(
step number,
STATIC FUNCTION ODCIGetInterfaces(ifclist OUT SYS.ODCIObjectList) RETURN NUMBER,
STATIC FUNCTION ODCIIndexCreate (ia SYS.ODCIIndexInfo, parms VARCHAR2, env SYS.ODCIEnv) RETURN NUMBER,
STATIC FUNCTION ODCIIndexAlter (ia sys.ODCIIndexInfo, parms IN OUT VARCHAR2, altopt number, env sys.ODCIEnv)
[code]...
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 :: Create A Trigger With Requirement Of Achieving Primary Key Functionality?
Sep 22, 2011I want to create a trigger with the requirement of achieving Primary key functionality.
I have a "EMP" table. the table already contains a duplicate data on "EMPNO" column. i want to restrict entering duplicate data further into table for that i want to create a trigger.
where can i find different triggering events of DML(like update, delete etc...)and DDL(database and schema level).
Create A Sequence For Primary Key To Simply Auto-increment By Default Of 1
Mar 14, 2005I'm trying to create a sequence for a primary key to simply auto-increment by the default of 1. I have a sql script written to generate mt tables, and I'm not sure how to modify the script to include the sequence. I also just want the sequence for a specific column, ie, PK, not the PK in all tables.
Here's a snippet from my script:
create table image
(
image_id int NOT NULL,
source_id int NOT NULL,
CONSTRAINT image_id_pk PRIMARY KEY (image_id),
CONSTRAINT fk_source_id FOREIGN KEY (source_id) REFERENCES source(source_id)
);
Would I add the create sequence statement right after the create table, and if so, how do I apply the sequence to only 1 table and a single column?
Data Guard :: Create Control File With Standby Keyword On Primary Database
Jul 4, 2012What is difference when you issue a create controlfile with "standby" keyword on the primary database
ALTER DATABASE CREATE STANDBY CONTROLFILE AS '/path/db_stby.ctl';
vs. creating a control using
ALTER DATABASE BACKUP CONTROLFILE to '/path/db_control.ctl';
what does ORACLE put into the standby control that is "extra"? ie. what is the difference between a standby control file and a normal control file?
SQL & PL/SQL :: Primary And Foreign Key On Same Column And Foreign Key Index
Aug 25, 2010Create table Car
(Car_cd VARCHAR2(5),
Car_Desc VARCHAR2(50)
);
alter table Car
add constraint Car_PK primary key (Car_CD);
INSERT INTO Car (Car_Cd, Car_Desc) VALUES ('CORLA','COROLLA');
Commit;
[code]....
The requirement necessitates a new table to map car to manufacturer. This mapping table may later be expanded to contain other attributes Engine, MPG, etc to hold details specific to a car.But this is in future.
Create Table Car_Mapping_Details
(Car_Cd VARCHAR2(5),
Manufacturer_Cd VARCHAR2(5));
--Primary Key Constraint
ALTER TABLE Car_Mapping_Details
ADD CONSTRAINT Car_Mapping_Details_pk PRIMARY KEY (Car_Cd );
--Not able to create this as Car_cd is already a PK in this table and therefore has Unique Index
ALTER TABLE Car_Mapping_Details ADD CONSTRAINT Car_Mapping_Details_fk1
FOREIGN KEY (Car_Cd)REFERENCES Car (Car_Cd);
[code]....
But in this case the Car_Mapping_Details.Car_cd is itself is a primary key and therefore has Unique index.Although I was able to create foreign key constraint on Car_mapping_details.car_cd column (which is also Primary Key), I was not able to create Foreign Key Index on this column. It gives me Quote:ORA-01408: such column list already indexed.In other words, not creating foreign index for foreign key column lead to table-level lock? Or will the Unique Index in that primary key column be sufficient to avoid table-level lock?
PL/SQL :: Create Bitmap Index?
Jan 27, 2013i want to create a bitmap index,but getting the error shown below..i created primary key on column dname of dept and unique constraint on empno of emp.
SQL> create bitmap index bindx on dept d(d.dname) from emp e,dept d where e.deptno=d.deptno;
create bitmap index bindx on dept d(d.dname) from emp e,dept d where e.deptno=d.deptno
*
ERROR at line 1:
ORA-25954: missing primary key or unique constraint on dimension
Automatic Storage Management :: Create Database First Before Creating ASM
Oct 14, 2013Sun Solaris 10, Oracle 11gr2 x86 How are you doing? I am trying to build a test system. I never build ASM before. if I need to install database first then Migrating to ASM? The other problem I am having is that I only have a Raw disk. I have one disk for root and oracle and the other one for Raw disk for ASM. Do you know it's possible to build ASM on 1 raw disk?
View 3 Replies View RelatedHow To Create Index On Materialized View
Aug 6, 2010How to create index on materialized view which is refreshed daily basis.
View 3 Replies View RelatedCreate Reverse Key Index On Table
Feb 25, 2013difference between the ways we create Reverse Key Index on the table.The two ways are as below:
1) CREATE INDEX <Index_Name> ON <Table_Name>(<Column_Name) REVERSE ;
2) CREATE INDEX <Index_Name> ON<Table_Name>(REVERSE(<Column_Name>)) ;
Which one is the appropraite one.
Are both going to act in the same way.
I created index in both ways one by one on the table.But when I fire the select statement against the same table, The explain plan doesn't show any cost and it shows the full table scan in both ways.The select statement used is as below...I want to compare the column with string RBO(i.e('RBO%') at the start.
SELECT *
FROM <Table_Name>
WHERE REVERSE (<Column_Name>) LIKE '%OBR' ;
The select statement is giving me the correct result. Only the explain plan is showing Full Table Scan.can we use this reverse with IN operator also in the same way by reversing the values.
SQL & PL/SQL :: Create A Table With Constraint And Index
Apr 7, 2010I use Oracle 10.0.2.0.1.If I create a table with constraint key; after that I create an unique index key, I got an error. Does it mean when I create a table with constraint the unique index are automatically created and I could not create index key as I did as below?
create table test_const(ename varchar2(50) not null,
key_num number not null,
descr varchar2(100),
constraint constraint_test_const unique (ename, key_num));
create unique index test_const_idx on test_const
(
"ENAME","KEY_NUM"
)
tablespace tmp_data;
Error report: SQL Error: ORA-01408: such column list already indexed 01408. 00000 - "such column list already indexed" added [pre] tags by Sriram
Performance Tuning :: How To Create Index
Mar 30, 2013I am going through this scenario:
* 35 | ID TABLE ACCESS BY INDEX ROW | S_ORG_EXT | 3064K| 2472M| | 1 (0)| 00:00:01 |
| 36 | INDEX FULL SCAN | S_ORG_EXT_U1 | 14 | | | 1 (0)| 00:00:01 |
Predicate Information (identified by operation id):
---------------------------------------------------
35 - filter("T2"."ACCNT_FLG"<>'N' AND ("T2"."INT_ORG_FLG"<>'Y' OR "T2"."PRTNR_FLG"<>'N'))
This unselective index scan on step 36 of the explain is returning 14 rows but optimizer is selecting 3064 K rows from the table .
I tried creating combined index on all 3 columns mentioned in the predicates for 35th step , but that is not utilized .
how to index this whole expression ::--
(ACCNT_FLG<>'N' AND (INT_ORG_FLG<>'Y' OR PRTNR_FLG<>'N'))
Something like CREATE INDEX XYZ on table((ACCNT_FLG<>'N' AND (INT_ORG_FLG<>'Y' OR PRTNR_FLG<>'N')) compute statistics ;
SQL & PL/SQL :: Create Index On Multiple Tables?
May 21, 2013we create index on multiple tables in oracle
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