PL/SQL :: How Rownum Works For The Column Having Data Type As Varchar2
Jan 29, 2013
bookshelf_test table structure
title varchar2(100) y
publisher varchar2(20) y
categoryname varchar2(20) y
rating varchar2(2) y
my query is,
select ROWNUM AS "Rank",title,publisher from (select rating,title,publisher from bookshelf_test order by rating desc ) where ROWNUM <=3
returns result ,
1 1 MY LEDGER KOCH PRESS
2 2 TO KILL A MOCKINGBIRD HARPERCOLLINS
3 3 THE MISMEASURE OF MAN W.W. NORTON
But inner query (select rating,title,publisher from bookshelf_test order by rating desc ) returns,
1 5 WONDERFUL LIFE W.W.NORTON
2 5 THE MISMEASURE OF MAN W.W. NORTON
3 5 TO KILL A MOCKINGBIRD HARPERCOLLINS
4 5 MY LEDGER KOCH PRESS
5 4 TRUMAN SIMON SCHUSTER
6 4 GOSPEL PICADOR
7 4 HARRY POTTER AND THE GOBLET OF FIRE SCHOLASTIC
8 4 INNUMERACY VINTAGE BOOKS
9 4 JOHN ADAMS SIMON SCHUSTER
10 4 JOURNALS OF LEWIS AND CLARK MARINER
11 4 LETTERS AND PAPERS FROM PRISON SCRIBNER
12 4 PREACHING TO HEAD AND HEART ABINGDON PRESS
13 4 THE SHIPPING NEWS SIMON SCHUSTER
14 4 THE GOOD BOOK BARD
15 4 THE DISCOVERERS RANDOM HOUSE
16 3 THE COST OF DISCIPLESHIP TOUCHSTONE
17 3 SHOELESS JOE MARINER
18 3 KIERKEGAARD ANTHOLOGY PRINCETON UNIV PR
19 3 EMMA WHO SAVED MY LIFE ST MARTIN'S PRESS
20 3 EITHER/OR PENGUIN
21 3 CHARLOTTE'S WEB HARPERTROPHY
22 3 BOX SOCIALS MARINER
23 3 ANNE OF GREEN GABLES GRAMMERCY
24 3 WEST WITH THE NIGHT NORTH POINT PRESS
25 3 UNDER THE EYE OF THE CLOCK ARCADE PUB
26 3 TRUMPET OF THE SWAN HARPERCOLLINS
27 2 COMPLETE POEMS OF JOHN KEATS VIKING
28 1 POLAR EXPRESS HOUGHTON MIFFLIN
29 1 GOOD DOG, CARL LITTLE SIMON
30 1 MIDNIGHT MAGIC SCHOLASTIC
31 1 RUNAWAY BUNNY HARPERFESTIVAL
why final queries top 3 rows r different than inner query ?
View 3 Replies
ADVERTISEMENT
Jan 10, 2013
I have an index on column of table which of data type varchar2. While selecting data from that table I am using following scenarios in where on the indexed column
like '%abc%'
like 'abc%'
like '&abc'
Will be the corresponding index will be for those cases?
View 3 Replies
View Related
Jun 29, 2012
Is there a seeded function by which I can check all the rows which stored dates in varchar column.
I have a table say test (test_data varchar2(100));
Now I will insert all types of records into the table varchar,number dates and then i will write q query to etch all those records only which has dates only
INSERT INTO test(1);
INSERT INTO test('ABC');
INSERT INTO test(SYSDATE);
INSERT INTO test(TO_CHAR(SYSDATE,'DD-MON-YYYY'));
INSERT INTO test(TO_CHAR(SYSDATE,'DD-MON-YYYY HH24:MI:SS'));
INSERT INTO test('15/01/2012');
...
commit;
View 17 Replies
View Related
Oct 17, 2011
Is there some functions to convert the long type field data to varchar2 type?
View 2 Replies
View Related
Jun 13, 2012
I have problem to convert simply varchar to date data type.
For example: 2012-05-28 22:36:08 and I would like to get format 28.5.2012 22:36:08
However I try to do it I get always some errors.
select '2012-05-28 22:36:08',
to_date( '2012-05-28 22:36:08', 'dd.mm.yyyy HH24:MI:SS') ,
to_char('2012-05-28 22:36:08', 'dd.mm.yyyy HH24:MI:SS')
from dual
View 7 Replies
View Related
Nov 22, 2011
I have a table called Student and a column as name now if i write a Query
select * from student where name < 'BRIAN D'
How does the comparison will be done.
View 3 Replies
View Related
Oct 24, 2007
i am fairly new in the oracle arena, but what would cause a statement such as
ALTER TABLE TEST_TABLE MODIFY text_field1 varchar2(100) DEFAULT 'testval' NULL
to change a column's type from VARCHAR2(100) to VARCHAR2(100 byte)? i found a few mentions of the 100 byte concept online but nothing that jumped out at me.
View 2 Replies
View Related
Jan 26, 2011
I have table called INFO and the column called CREATED_DATE . Now the datatype of CREATED_DATE is of varchar2 . Now If I need to query the table through select statement where I need to order the result based on CREATED_DATE , how can i achieve this ?
View 1 Replies
View Related
Oct 26, 2011
Rowid type is one of data types in oracle,is it equal to the varchar2,the flowing test show varchar2 type can contain rowid type.
SQL> Declare
2 L_Rowid1 Varchar2(18);
3 L_Rowid2 Rowid;
4 Begin
5
[Code]....
View 2 Replies
View Related
Oct 7, 2011
I have come one requirement where i need to extract data from a LONG RAW data type column.
View 7 Replies
View Related
May 9, 2012
I have to create a table which should store data at Week level. The table have the following columns
Product id, Loc id, Business group id, FISCAL WEEK , Revenue,
Fiscal week column will have data as '2011-W01', '2011-W47' etc.
What should be the data type for fiscal week column. Based on this table i have to create a calculated column which should fetch trailing 12 weeks average for each row.
View 5 Replies
View Related
Mar 17, 2013
can we create rank on a particular column without using rownum and rank function.
View 9 Replies
View Related
Mar 16, 2013
I have extracted in the following XML document some Mpeg7 visual descriptors from an image and I saved it in an XMLType column. I would like to use XMLQuery to extract the data from the Value node. how write such a query. I could not get the proper Xpath to any node.
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<Mpeg7 xmlns="http://www.mpeg7.org/2001/MPEG-7_Schema" xmlns:xsi="http://www.w3.org/2000/10/XMLSchema-instance">
<DescriptionUnit xsi:type="DescriptorCollectionType">
[code]...
View 1 Replies
View Related
Oct 23, 2012
i what to update a column data type am geting this error
ORA-02267: column type incompatible with referenced column type
my query is
when i run
SELECT b.table_name||
' joins to the '||
a.table_name||
' table on '||
c.column_name||
' = '||
d.column_name Table_relationships
[code]....
View 9 Replies
View Related
Aug 31, 2010
I have a task to update one of the rows in a table (having only 2 columns, number and long) which is long data type. We are on Oracle 10g. Not sure how to use update for a long data type column.
I have tried using dbms_metadata_util.long2varchar, but still not getting what I want.
View 2 Replies
View Related
Jul 28, 2010
I have a table with VARCAHAR2 data type column, I am unable to update that column with the following data.
UPDATE we set sname='(([Emp].Job.Catageory
IN 'SALES,COMPUTER,SCIENCE,TELESERVICE')
AND ([Employee].IDtype IN 'ABC'))'
I am getting the error "ORA-00933: SQL command not properly ended"
View 9 Replies
View Related
Jul 6, 2010
user@tank> create table filetable(id number(6), file_content BLOB);
0 rows affected (0.02 seconds)
vlanke@tank_db> desc filetable;
ID NULL NUMBER(6,0)
FILE_CONTENT NULL
I am new to Database field.
- I created a table with 2 columns id (datatype as number) and file_content datatype as BLOB.
- My question is under desc filetable; query why does it not show me a data type as BLOB.
- create table query does not return any error to me. How do I verify that FILE_CONTENT column has datatype as blob.
View 1 Replies
View Related
May 18, 2011
i have one table emp in this table i have the column eno,ename,hiredate and i have data also in this table.
my eno colum data type is number so now i have to change this colum data type from number to varchar2.
if yes how can when i am trying to change this colum data type i got this error
Failed to commit: ORA-01439: column to be modified must be empty to change datatype.
View 1 Replies
View Related
Jan 24, 2013
I have a table Table_xml_tmp which has a column MESSAGECONTENTS as XMLType data which contains data as follows
"<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<xclimSchemaMain xmlns="http://clones.telcordia.com">
<response>
<clHeader>
<msgName>queryPlace</msgName>
[code]......
I need to get all rows where node <operationStatus> value as SUCCESS. I am running following query but it is returning null value insted of data of columns
SELECT a.MESSAGECONTENTS.extract('/clHeader/msgName/object/msgType/sender/senderInstance/operationStatus/text()').getStringVal()
FROM Table_xml_tmp a
WHERE a.MESSAGECONTENTS.extract('/clHeader/msgName/object/msgType/sender/senderInstance/operationStatus/text()').getStringVal()= 'SUCCESS'
View 2 Replies
View Related
Jun 4, 2012
I have a table with modifieddate column with 'DATE' data type.I am facing date format exception and tried with to_char, to_date but its throwing invalid number exception. how to format date accordingly.
SELECT * FROM EMP WHERE modifieddate > '31-Dec-2011 18:30';
ORA-01722: invalid number
01722. 00000 - "invalid number"
View 9 Replies
View Related
Jun 28, 2010
Now i have a problem which i am facing for the first time. The problem is:
I have created a table test1 with two column of number data type and the column witdth is 25. Then enter the data but when i select the recrod it does not display the column data as it was entered.
SQL> create table test1
2 (
3 startno number(25),
4 endno number(25)
5 );
Table created.
SQL> insert into test1
[code]...
View 5 Replies
View Related
Jun 22, 2012
I have to change the datatype of a column from CLOB to varchar2, without changing the order of the columns. The table has no data.
I could find any other way other than dropping the CLOB columns and then adding new columns with varchar2 datatype. But this changes the order of the columns in the table.
View 4 Replies
View Related
Aug 16, 2011
i have a varchar2 column containing string values that can be converted to date i.e. ('31-JUL-11') and that column also contains text strings in it. i.e. ('Some string data...')
records whose column value can be converted to date are extractable via where clause (i.e. those rows are associated with some fix number / flag)
now when i try to use to_date function i get the error that
" ORA-01858 a non-numeric character was found where a numeric was expected "
in sql i have added a where clause to only pick rows with flag, but even then it gives the error.
using a subquery in the from clause eliminates the error, but when i create it in a view it again gives the same error.
View 8 Replies
View Related
Apr 21, 2010
I have table customer which contains a column CUSTOMER_FIRST_NAME
CUSTOMER_FIRST_NAME VARCHAR2(50)
What will be sql statement to add a constraint on the CUSTOMER_FIRST_NAME column of the CUSTOMERS table so that the value inserted in the column does not have numbers ?
View 34 Replies
View Related
Feb 25, 2012
I need to create a composite unique index on varchar2, number and CLOB column. I haven't used such index before that have the CLOB column indexing. I found the below link related to CLOB indexing...
[URL]......
Links from where I can get related info. Also I would like to know the impact of such index on performance. I have to store and process around 50 million records in such a way, will it be beneficial to use this index?
View 11 Replies
View Related
Feb 9, 2011
I need to create a materialized view with a clob column based on a varchar2 column of a table.This is because in the mv the clob column data gets appended one after another.
View 2 Replies
View Related
Sep 23, 2011
I need the output like...
OUTPUT(MM/DD/YYYY): 2/03/2011
02/03/2011
create table test (trans_date varchar2(1000));
Insert into test values ('2/03/2011')
Insert into test values ('02/03/2011')
Insert into test values ('12/33/2011')
Insert into test values ('xxx')
Insert into test values ('33/33/2011')
Insert into test values ('03/03/11')
View 4 Replies
View Related
Aug 21, 2006
I have to Insert data from one table to another table. First table contains some clob datatype columns and second table have carchar2 datatype.
Below are the structures of both tables;
SQL> DESC TBL_MAINSQL> DESC TBL_MAIN2
Name Type Name Type
----------------------------- ----------------------------------------- --------------
TXT_FEIN_NUMBER VARCHAR2(9) TXT_FEIN_NUMBER VARCHAR2(9)
TXT_QUOTE_NUMBER VARCHAR2(12)TXT_QUOTE_NUMBER VARCHAR2(12)
TXT_POLICY_NUMBER VARCHAR2(12)TXT_POLICY_NUMBER VARCHAR2(12)
TXT_AGENT_CODE VARCHAR2(10)TXT_AGENT_CODE VARCHAR2(10)
[code]....
The Table contains 5000 records. how to convert CLOB to VARCHAR2.
I used DBMS_LOB.SUBSTR but I received BUFFER TO SMALL ERROR.
View 10 Replies
View Related
Jan 8, 2013
CREATE TABLE CHECK(
ADM_DATE VARCHAR2(10)
)
INSERT ALL
INTO CHECK VALUES ('122012')
INTO CHECK VALUES ('112012')
INTO CHECK VALUES ('102012')
INTO CHECK VALUES ('092012')
INTO CHECK VALUES ('082012')
SELECT * FROM DUAL;
ADM_DATE has the data as in format 'MMYYYY' but I've to make it as 'YYYYMM' while the datatype of ADM_DATE is VARCHAR2.
How can I do it?
View 4 Replies
View Related
Mar 3, 2011
I am working with Oracle 8i and I have a problem while applying the below query:
select to_char(ENTRYDATE,'MM-DD-YYYY HH24:MI:SS') from TBL_BANDWIDTH_READS
where ENTRYDATE > sysdate-1
and rownum <10
03-03-2011 00:00:00
03-03-2011 00:00:00
03-03-2011 00:00:00
03-03-2011 00:00:00
[code].....
The time appears as 00:00:00. I said it's something weird because if I take the where condition off, then something like this appears:
select to_char(ENTRYDATE,'MM-DD-YYYY HH24:MI:SS') from TBL_BANDWIDTH_READS
12-22-2006 13:13:27
12-22-2006 13:13:27
12-22-2006 13:13:27
12-22-2006 13:13:27
12-22-2006 13:13:27
12-22-2006 13:13:27
12-22-2006 13:13:27
I am using the same query on a different table and there's no problem on it:
select to_char(ENTRYDATE,'MM-DD-YYYY HH24:MI:SS') from TBL_XX_PROGRAM
where ENTRYDATE > sysdate -10 and rownum <10
03-03-2011 17:06:48
03-03-2011 17:06:48
03-03-2011 16:59:08
03-03-2011 16:59:08
03-03-2011 12:04:21
I checked the DDL of both tables and the only difference is that the TBL_XX_PROGRAM have the ENTRYDATE field defined as not null and the ENTRYDATE on the TBL_BANDWIDTH_READS does not have the same constraint, could it affect?
View 3 Replies
View Related
