I wonder how I can limit the queries in a table? This limitation would be that from a certain time, it allows queries. Before the opening hours, permitting no select.
Example: Allow SELECTs in table only after 16 p.m.
there is urge to limit account usability in oracle.
let's say i have request to create user HR1, and additional information is that this account should be available for using till 31-dec-2011. is there possibility to set this validity during creation?
our system has always been running on mysql database and recently we have switched to oracle. As the current system is coded using mysql query syntax, when i run this program using oracle database, i got a error. The language that I'm using is JSP.
this is the error message:
The following query could not run on oracle. To convert these mysql queries to oracle compatible queries.
SELECT productID,productName FROM products order by productName;
select newsID,newsDate,newsHeadLine1 from news order by newsDate Desc limit 3
SELECT fuji_products.productID, productName_Display FROM products,products_availability where products_availability.productID=products.productID and (product_status='enabled' or product_status='all') AND category='12'
SELECT catID, catSub1 from category where catSub = '"+ prodCat +"' AND catSub1 is not null group by catSub1 order by catSub1
I would like to know the following.
If multiple queries are run in parallel(at the same time) against a table or a set of tables (query referencing multiple tables), does it reduce the performance.
In other words is Oracle capable of reading (selecting from) the same table multiple times in parllel.
go through both the given queries...
SELECT * FROM EMP A WHERE 1=(SELECT COUNT(DISTINCT(SAL)) FROM EMP B WHERE B.SAL>A.SAL);
SELECT * FROM EMP WHERE SAL=(SELECT MIN(SAL) FROM (SELECT DISTINCT(SAL) FROM EMP ORDER BY SAL DESC) WHERE ROWNUM<=2);
both queries will fetch second highest sal from emp table.which sorting is used by oracle in order by and group by clause.
What is the difference between CREATE EXTERNAL TABLE Vs CREATE TABLE .?
Is CREATE EXTERNAL TABLE included in CREATE TABLE?
I was trying to update the AGENTS table with the data based on queries. But all the records updates with the same data. I can't understand why.
Write a PL script to populate these columns as follows:
TRAVEL_STATUS is one of three values:
GLOBETROTTER: agent has visited five or more different locations in the course of his missions
ROVER: agent has visited between one and four locations
SLOB: agent has been on no missions.
CONTACTS is the number of targets that share the agent's home location.
some of the tables and columns are
agents table: agent_id, location_id
targets table: target_id, location_id
missions_agents table: agent_id, mission_id
missions_targets: target_id, mission_id
missions table: mission_id, location_id
My code is
DECLARE
status AGENTS.TRAVEL_STATUS%TYPE;
contact AGENTS.CONTACTS%TYPE;
CURSOR loc_cur
IS
SELECT
a.AGENT_ID id,
[code].....
Following are 2 queries, which return same results as far as the input parameter is NOT NULL
select /*+ gather_plan_statistics */ * from PX_CJQ where decode(:x,null,1,object_id) = NVL(:x,object_id);
select /*+ gather_plan_statistics */ * from PX_CJQ where object_id = NVL(:x,object_id);
However the execution plan differs a lot The FTS cost or rows accessed count also varies what could be the reason? The PX_CJQ is simply select * from dba_objects and has index on object_id which anyway is not being used in this case
variable x number
exec :x:= 28
Query - 1
***************
***************
SQL> >select /*+ gather_plan_statistics */ * from PX_CJQ where decode(:x,null,1,object_id) = NVL(:x,object_id);
SQL> >select * from table(dbms_xplan.display_cursor(NULL,NULL,'ALLSTATS LAST'));
[code]...
Query - 2
***************
***************
SQL> >select /*+ gather_plan_statistics */ * from PX_CJQ where object_id = NVL(:x,object_id);
SQL> >select * from table(dbms_xplan.display_cursor(NULL,NULL,'ALLSTATS LAST'));
PLAN_TABLE_OUTPUT
[code]...
29 rows selected.
SQL> >
I have three select queries. Each of them returns a single column. I want the result of these queries into a single table..
I tried this way..
select * from
(first select),(second select),(third select);
this gives duplicate rows...
Here is my problem, i need to create some files with my own format(let say 5000 records each) from a huge data table (May contain 5 Million records). And i want this creation to be multi threaded.
so how can i form queries efficiently to fetch records like 1..5000 and 5001..10000 and so on. I can form some thing like select * from table where rownum<5000 and not exists ( already fetched records) . but it is not the efficient one.
I am trying to execute dynamic SQL in Stored Function and I don't know how to do this.
Explanation:
In the function I am calling pr_createtab is procedure which will create a physical table and return the table name in the out variable v_tbl_nm.
I need to query on this dynamic table and return the result as return result. But i am not able to do it.
Here T_web_loylty_report_table is a type.
CREATE OR REPLACE function CDW_DSS.f_ReturnTable(i_mrkt_id in number, i_cmpgn_year in number)
return T_web_loylty_report_table is
v_tbl_nm varchar2(50);
i_cntry_cd varchar2(20);
v_sql_str varchar2(32567);
[code]......
We have a table in the client database that has two columns - column parent and column child. The whole hierarchy of DB table dependencies is held in this table.If Report 1 is dependent on Table A and Table A in turn is dependent on two tables Table M and Table N. Table N is dependent on table Z it will appear in the db table as,
Hierarchy Table
Parent Child
Report1Table A
Table ATable M
Table ATable N
Table NTable Z
Requirement :
From the above structure, we need to build a table which will hold the complete hierarchy by breaking it into multiple columns.The o/p should look like this
-ParentChild 1Child 2 Child 3
-Report1Table ATable M
-Report1Table ATable N Table Z
Child 1, Child 2, Child 3 ....and so on are columns.The number of tables and the no of hierarchical relationships are dynamic.
SQL Statements to create hierarchy table:
create table hierarchy (parent varchar2(20), child varchar2(20));
insert into hierarchy values ('Report1','Table A');
insert into hierarchy values ('Report1','Table B');
insert into hierarchy values ('Table A','Table M');
insert into hierarchy values ('Table B','Table N');
insert into hierarchy values ('Report2','Table P');
insert into hierarchy values ('Table M','Table X');
insert into hierarchy values ('Table N','Table Y');
insert into hierarchy values ('Report X','Table Z');
Approached already tried :
1) Using indentation : select lpad(' ',20*(level-1)) || to_char(child) P from hierarchy connect_by start with parent='Report1' connect by prior child=parent;
2)Using connect by path function :
select *
from (select parent,child,level,connect_by_isleaf as leaf, sys_connect_by_path(child,'/') as path
from hierarchy start with parent='Report1'
connect by prior child =parent) a where Leaf not in (0);
Both the approaches give the information but the hierarchy data appears in a single column.Ideally we would like data at each level to appear in a different column.
what command is used to create a table by copying the structure of another table including constraints ?
View 2 Replies View RelatedI want to create temp table, for this i am using:
CODEcreate global temporary table help_temp
as
select * from help;
but this is creating only the table structure, not copying the table data.
can we create table with copying of another table with some specific condition.
example.suppose we have one table which name is emp with three columns.
empid
empname
empjoindate
i want create a table emptemp by using emp table where empjoindate between two dates.
I have to create a table which contain history of a main table. like this:
if the main table is
========================
nametypelengthnot null
Avarchar5Y
Bvarchar5N
Cvarchar5N
Dvarchar5N
========================
[code]....
I've plan to so this by create a trigger in main_table. my problem is my main table have a lot of fields and I can't write a code to control it 1 by 1 like :
if old.A <> new.a
insert into history("A",old.A,new.a)
if old.B <> new.B
insert into history("B",old.b,new.b)
......
I decided to select column name from the data dictonary using this SQL:
SELECT column_name FROM user_tab_columns WHERE table_name = '<<Table Name>>';
and then do a loop over the resultset and use the column name I've got , like this (its just an idea, may be not a write syntax):
BEGIN
.....
FOR i IN 1..:result.COUNT LOOP
if ld.colname[i] <> :new.colname[i]
INSERT INTO history
VALUES ( colname[i], ld.colname[i], :new.colname[i]);
END LOOP;
END;
but I can't write a "old.colname". I try with " old.'colname' ", " ld.'colname' " but it won't work.how to create a history file like I've describe.
I want to create a new table 'b' from table 'a'.I know the query will be " create table b as select * from a;" But there is some twist in my question. I do not know how many table are there in table 'a' all I know is that there is one column named "timestamp" in table 'a'.
Now I want to create table 'b' with the difference that the column "timestamp" should contain the value "sysdate" instead of the earlier values which were there in table 'a';
Note: I have to do this in single query. I can not first create table 'b' from 'a' and then update the values of column "timestamp" to sysdate.
If I try create table from the following syntax
create table a as select * from table b;
Then I could get only base table structure alone, I would like to get partition syntax as well.
I am trying to create a table that will increment my ID by one using the following commands:
/*Creates the log needed to increment ID*/
create sequence seq_log;
CREATE TABLE MESSAGE_LOG_TABLE
(
IDNUMBER(10)NOT NULLPRIMARY KEY,
[code]...
When I run the above my create sequence completes successfully but I get a ORA-00955: name is already used by an existing object error message on the create table. I have dropped all tables and sequences before running my command but I still get the same error message.
After it bombs out it appears that SQL+ want's more information for it begins to give me line numbers as if it is looking for a ";" to end the above command. I have to exit SQL+ and log back in to continue working.
running on 10.2.0.5 and above satisfies the following:
having locally managed tablespace with assm enabled
create table t1 (n1 number) storage (next 1M);
insert into t1 values (1); commit;
create table t2 storage (next 2M) as select * from t1;
This will indeed set the storage option next to 2M;
The same situation in 10.2.0.4 will allways set next option for the ctas statement to the initial value of table t1.
Is this an impact of patch set 4 (10.2.0.5)? Why does it differ from 10.2.0.4 to newer releases?
creating a temporary table.i have this query mentioned below
CREATE TABLE WEBPEN AS (SELECT PNSR_PPO_NO PPO,PNSR_FILE_NO,
DECODE(F_GET_APPLN_NO(PNSR_PK),'1',PNSR_VOL_NO,F_GET_APPLN_NO(PNSR_PK)) APPLN_NO,
PNSR_FULL_NAME NAME,
TO_CHAR(PNSR_DOB,'DD/MM/YYYY') DOB,
TO_CHAR(PNSR_DOR,'DD/MM/YYYY') DOR,
F_GET_ADBK_NAME(PNSR_TO_PENSION) TREASURY,
PNSR_SPOUSE_NAME SPOUSE,
[code]....
This creates a table webpen with around 54107 rows. What i am want is every time run "select * from webpen" it should run the above query and give the result as per the values in main table M_PENSIONER ,M_PEN_DCRG_WITHHELD.
What i want is it should truncate the existing values and insert the value by running the above mentioned query .
I want to create a table in runtime.
SQL> select 'Test'|| '_' || extract(day from sysdate) ||
2 lpad(extract(month from sysdate), 2, 0)
3 from dual;
'TEST'||'_'||EXTRACT(DAYFROMSY
-----------------------------------------------------
Test_1502
SQL>
I want to create a table with this table name 'Test_1502'
I am using the create command as:
SQL> create table Test || '_' || (select extract(day from sysdate) ||
2 lpad(extract(month from sysdate), 2, 0) from dual) as
3 select * from Emp;
create table Test || '_' || (select extract(day from sysdate) ||
lpad(extract(month from sysdate), 2, 0) from dual) as
select * from Emp
ORA-00922: missing or invalid option
SQL>
i want to create table from other database table by using dblink.but while creating the new table i am getting a error of temp space.
the data is the source table have around 2 millions of records.
i am using below syntax to craete table:
CREATE TABLE UDT_Fcst_arch_72 PARALLEL (DEGREE 4)
AS SELECT * FROM UDT_Fcst_arch@PRD
Today I’m trying to make a “table” from a column. The information I’m using looks like:
AAA-B-CCC|DDD-E-FFF|GGG-H-III|JJJ - K
I need my table have these columns:
Column1 Column2 Column3
AAA B CCC
DDD E FFF
GGG H III
JJJ K
So I began to divide the string into smaller pieces:
SELECT LEVEL reg,
REGEXP_SUBSTR('AAA-B-CCC|DDD-E-FFF|GGG-H-III|JJJ-K','[^|]+', 1, LEVEL) ferroc
FROM DUAL
CONNECT BY LEVEL <= LENGTH('AAA-B-CCC|DDD-E-FFF|GGG-H-III|JJJ-K') - LENGTH(REPLACE('AAA-B-CCC|DDD-E-FFF|GGG-H-III|JJJ–K','|')) + 1; What I get is:
>
REG ferroc
1 AAA-B-CCC
2 DDD-E-FFF
3 GGG-H-III
4 JJJ - K
>
After this step I’m lost, I try to do almost the same thing than in the first query but mi information get mixed.
when i just execute
CREATE TABLE ext_schoolof
REJECT LIMIT UNLIMITED;
then it gets " select * from ext_schoolof " BUT when i use procedure, it creates external table but when I try to get " select * from ext_schoolof ", then I get errors
The error numbers are
ORA-29913
ORA-29400
KUP-00554
KUP-01008
KUP-01007
[code]....
Is it possible to create table using trigger?
I tried but failed...
CREATE OR REPLACE TRIGGER tri1
AFTER UPDATE
ON dept
FOR EACH ROW
declare
pragma AUTONOMOUS_TRANSACTION;
BEGIN
execute immediate 'create table dept_dum as select * from dept';
END;
/
SQL> update dept set deptno=23 where deptno=10;
update dept set deptno=23 where deptno=10
*
ERROR at line 1:
ORA-01031: insufficient privileges
ORA-06512: at "SCOTT.TRI1", line 6
ORA-04088: error during execution of trigger 'SCOTT.TRI1'
I am running this as scott user
My requirement is to
create table as select * from table_name where flag=1
This has to be done parallel for all the tables for which this flag is enabled and by that trigger delete all those rows which were backed up as table.
In a pl/sql procedure code, I created a normal table (create table) using dynamic sql. Then I used that table in procedure for further processing. But while compiling, it gave error that table does not exist. I can understand that he table is not present in DB, so the error came. But at the same time I need to create a table dynamically, use it and drop it. Does it mean that I need to make every query referencing that table as dynamic ??
View 1 Replies View RelatedMy developer came with a requirement of creating partitions on a table which has 40 million records. His exact requirement is to create as many as partitions in such a way that 1 partition should not exceed 5k-10k records and these records should be inserted/updated on the same date (i.e. using a column as source_timestamp field). How to accomplish this?
View 2 Replies View RelatedI'm trying to create a new table which has a date field (date of birth) and I want to include a constraint which will not allow me to add values if they are over 21 years old. I'm using SQLPlus .
View 3 Replies View RelatedWhen we create a duplicate table, we use the below query:
create table table2 as select * from table1;
But table2 is created without any constraints inherited from table1.Can I know how can i create the table with all the constraints existing in parent table.