SQL & PL/SQL :: Datatype Of Some Columns Is NVARCHAR2
Feb 21, 2010I have a table which have almost 90000 rows.
1. The datatype of some columns is NVARCHAR2. I want to change it to VARCHAR2 and NUMBER for some.
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SQL & PL/SQL :: Two Columns Can Have Long Datatype In Table?
Apr 27, 2010I have question related to LONG datatype. Actually from google and get to know that one table can have only one LONG datatype when i searched for reason . i got these resons:-
With 9i (I believe) and later versions, Oracle deprecates using the long datatype in favor of the lob (clob, nclob and blog) datatypes. It is only supported for backward compatibility.
Restriction:- It can not be used in create type as an attribute of the defined type.
It can not be used in where conditions.
There can be no indexes on long columns.
Regular Expression are not possible.
long can not be returned from a stored function.
SQL can not call functions that have an attribute of type long.
And even more restrictions.
So I want to know that is only reason because of that Oracle doesn't allow us to make two Column or is there any strong reason which make it more logical Like storing of data in Row blocks or some thing else.
PL/SQL :: Created A Table With CLOB As Datatype For One Of Columns
Aug 5, 2013<ORACLE VERSION : 11.2.0.2.0> i have created a table with CLOB as datatype for one of the columns, I am trying to store a string ( I am not sure about the length of the string) , when i am querying on my table for the CLOB column,instead of the actual string "(HUGECLOB)" is coming. How to get the actual string in case the problem is with the SIZE.
View 1 Replies View RelatedSQL & PL/SQL :: How Does Operator Works For Varchar2 Datatype Columns
Nov 22, 2011I 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.
PL/SQL :: Conversion Of BLOB Datatype To CLOB Datatype
Aug 17, 2012I would need to convert the column datatype from BLOB to CLOB. currently in the table, the BLOB column has the data. the requirement is to convert this column from BLOB to CLOB datatype.
How to convert from BLOB datatype to CLOB datatype ?
SQL & PL/SQL :: Nvarchar2 Maximum Size
May 11, 2011I'm having some issues with my NVarchar2 columns that I want to solve
My current NLS_CHARACTERSET is 'AL16UTF16', and therefore I can only create NVarchar2 columns with an maximum extension of 2000 bytes. But I do need a column with 4000 bytes length. How can I create an 4000 NVarchar2 column?
(I do not want to use a CLOB column...only a NVarchar2)
SQL & PL/SQL :: Converting Varchar2 To NVHAR And NVarchar2?
Feb 16, 2011I have written a trigger & procedure to call a webservice from pl/sql procedure. Everything was working fine until I was told to use nchar & nvarchar2 instead of varchar2 as per requirement. Now I am not able to run the procedure and getting errorcode with return response from server.
I didn't changed the width of columns but only datatype. What precautions do I need to take in code while doing this and what could have caused the error only by converting the data type.
Search Over Nvarchar2 (4) Column In 4 Million Rows?
Apr 29, 2011 have a performance problem with a simple query, for example:
SELECT *
FROM CA_ADDRESS
WHERE address_k1 = 'L163'
I have an index created in column address_k1. CA_ADDRESS is a 3-4 Million Record table.
I need to improve the performance of the query. How I can improve it?
PL/SQL :: Query NVARCHAR2 Column In Select Statement
Sep 3, 2013I have table desc xx_testName
Null Type
-------- -------- --------------
COL1 NOT NULL NVARCHAR2(100) COL2 NOT NULL NVARCHAR2(100) COL3 NOT NULL NVARCHAR2(100)
i am able to query select * from xx_test however if i query as select col1 from xx_test then it is giving error.
ORA-00904: "COL1": invalid identifier00904. 00000 - "%s: invalid identifier"*
Cause: *Action:Error at Line: 3,131 Column: 13
Let me know how to query NVARCHAR2 column and how can we put in WHERE condition ?
Server Administration :: Getting NVARCHAR2 In Oracle Standard Edition?
Sep 13, 2011I want to know, Is NVARCHAR2 available in Oracle standard edition?
View 5 Replies View RelatedReports & Discoverer :: Create A Report By Using One Field / Text As Columns Name In Layout But Display All Columns
Jun 16, 2010I want to create a report by using one field and one text as columns name in layout but display the all the columns. I mention the 5 column names in query.how can I write function in summary column.
View 4 Replies View RelatedPerformance Tuning :: Index 15 Columns When Cannot Predict Columns Will Be Used In Where Clause?
Apr 4, 2011I am running a fairly busy Oracle 10gR2 DB, one of the tables has about 120 columns and this table receives on average 1500 insertions per second. The table is partitioned and the partitioning is based on the most important of the two timestamp columns. There are two timestamps, they hold different times.
Out of these 120 columns, about 15 need to be indexed. Out of the 15 two of them are timestamp, at least one of these two timestamp columns is always in the where clause the queries.
Now the challenge is, the queries we run can have any combination of the 13 other columns + one timestamp. In reality the queries never have more than 7 or 8 columns in the where clause but even if we had only 4 columns in the where clause we would still have the same problem.
So if I create one concatenated index for all these columns it will not be very efficient because after the 4th or 5th column the sorting would no longer be very useful and I believe the optimiser would simply not use the rest of the index. So queries that use the leading columns of the index in sequence work well, but if I need to query the 10th column the I have performance issues.
Now, if I create multiple single column indexes oracle will have to work a lot harder to maintain all these indexes and it will create performance issues (I have tried that). Besides, if I have multiple single column indexes the optimiser will do nested loops twice or three times and will hit only the first few columns of the where clause so I think it will kind of be the same as the long concatenated index.
What I am trying to do is exactly what the Bitmap index would do, it would be very good if I could use the AND condition that a Bitmap index uses. This way I could have N number of single column indexes which the optimiser could pick from and serve the query with exactly the ones it needs. But unfortunately using the Bitmap index here is not an option given the large amount of inserts that I get on this table.
I have been looking for alternatives, I have considered creating multiple shorter concatenated indexes but this still would not address the issue since many queries would still not be served properly and therefore would take a very long time to complete.
What I had in mind would be some sort of multidimensional index, I am not even sure if such thing exists. But essentially it would be some sort of index that could serve a query efficiently regardless of the fact that the where clause has the 1st, 3rd and last columns of the index.
So considering how widely used Oracle is and how many super large databases there are out there, this problem must be common.
SQL & PL/SQL :: How To Select All Columns From Table Except Those Columns Which Type In Query
Jan 21, 2011I have a two question.
Question 1:How to select all columns from table except those columns which i type in query
Question 2:How to select all columns from table where all columns are not null without type each column name which is in empty data
PL/SQL :: Which Datatype Should Take Instead Of Time
Oct 4, 2012i was using sql server there is time keyword but in oracle which keyword i should take instead of time keyword?
View 7 Replies View RelatedGet Exact Value Without Changing Datatype?
Nov 23, 2011I created a table of Number(20,4) column. I inserted an amount value 999999999999999.5555 but this value is rounded off to 1000000000000000.0000 automatically in Oracle. How to avoid this? I tried for less number of digits and I am getting the exact value. Is there any way to get the exact value without changing the datatype?
View 1 Replies View RelatedPLS-00904 And Anchored Datatype
Jul 20, 2011I am using Anchored datatype wheere the table_name which lies in another schema and the current scheam has select insert update delete access on the the said table of the schema.
Example in current schema LL_TAR
I have defined a varaible in a script/procedure
V_TAG LL_TMR.TAG_DETAILS.TAG_VAL%type where TAG_VALUE column lies in a table TAG_DETAILS which lies
in LL_TMR.
During compilation it gives me an error PLS-00904 saying insufficient privilege. This issue and still use anchored datatype.Or anchored datatype of tables which lie in different schema on the same database server is not allowed? Cause i had read that on some websites that it is allowed for a table which resides on a different schema on a database.
SQL & PL/SQL :: Change Datatype From Object
Dec 8, 2010I have created an Object Type and this Type is mapped to a column datatype in a table.This Table has values inserted.
create or replace
type column_type as object (
col_name varchar2(30),
col_comment varchar2(4000)
);
[code]....
ORA-02303: cannot drop or replace a type with type or table dependents...how to resolve this issue without having to delete any column from the table?
SQL & PL/SQL :: Date Datatype Being Stored As DD:MM:YY HH:MI:SS?
Feb 21, 2012I have a table in my database with a column called theme_night_date that i want to store just a date and no time.
View 2 Replies View RelatedSQL & PL/SQL :: Long Datatype In Where Clause
Sep 1, 2010Can we use long data type in where clause of the query ?
View 2 Replies View RelatedPL/SQL :: How To Set The Default Long Datatype
Jul 12, 2013Query that I want to run:
exec DBMS_METADATA.SET_TRANSFORM_PARAM(DBMS_METADATA.SESSION_TRANSFORM,'SEGMENT_ATTRIBUTES', false);
result: E;;45;45 ;45 ;45 ;S 45
I am not sure but may be I need to set long size before running above query. But when I try to set long size gives below error. "The output from DBMS_METADATA.GET_DDL is a LONG datatype. When using SQL*Plus, your output may be truncated by default. Issue the following SQL*Plus command before issuing the
DBMS_METADATA.GET_DDL statement to ensure that your output is not truncated:"SQL> SET LONG 9999error: Unhandled SET statement: "SET LONG 9999"
PL/SQL :: Illegal Use Of LONG Datatype
Aug 31, 2012I've this problem:
create table t1 ( x long );
Table created.
create table t2 ( x long );
Table created.
insert into t1 values ( 'test long type' );
1 row created.
insert into t2 select * from t1;
*
ERROR at line 1:
ORA-00997: illegal use of LONG datatype
How can I issue this error, I need use also dblink with long type.
I do not want to use the copy command.
I know that you can solve this problem with a stored procedure or anonymous block.
PL/SQL :: Get Particular Value From Column Which Is BLOB Datatype?
Jul 31, 2013on this query. I need to get a particular value from a column which is a BLOB datatype. Here is the sample
data ID TESTDATA1 Best Buy
00001234 12222 30 00 2
Lowes 00001234 12222 100 00 3
Walmart 00001234 12222 129 00 4
abc 00001234 12222 5000 00 5
Toshiba 00001234 12222 21 00 6
abcdefghij 00001234 12222 49 00
Where '00001234' is the Invoice , '12222' is Netamount field and highlighted in red is the $ amount for that invoice.
The only data i need query to return 12222 (netamount)= $amount. I tried using substr select substr((TESTDATA),19,26)test from TABLEA; But this gives me the only the first row but not other amount which have different positions.
Here is the desired output
OutputID TESTDATA 1
12222 30 2 12222 100 3
12222 129 4 12222 5000 5
12222 21 6 12222 49
SQL Statement With Varchar Datatype Size
Dec 21, 2010The below table and functions are examples, but issue is like this.
i have one issue while forming below sql , Application will form this query at run time wih required inputs
it is failing because the application will not support the clob datatype.
Table : T_E (similar to EMP table structure)
This table has data similar to emp but bulk data around 10k records.
Query formed
select empno,ename, get_employees(deptno)
from t_e;
This sql query this is failing when function return varchar2 string more than 4000 size.Because in sql query size should not exceed 4000 for varchar2 data type , function return size can be upto 20000
Function which
CREATE OR REPLACE FUNCTION get_employees (p_deptno in emp.deptno%TYPE)
RETURN varchar2
IS
l_text varchar2(32767) := NULL;
BEGIN
FOR cur_rec IN (SELECT ename FROM t_e WHERE deptno = p_deptno) LOOP
l_text := l_text || ',' || cur_rec.ename;
END LOOP;
RETURN LTRIM(l_text, ',');
END;
I can try this with clob but application doesn't support that..so i tried with using clob in above function , after that while returning to application i want to conver the clob to char and return the entire string
select empno,ename, to_char(substring(get_employees(deptno),1,4000)) -- first 4000 characters
, to_char(substring(get_employees(deptno),4000,8000)) -- next 4000 characters
from t_e;
But this is failing how to return the entire string in above sql
Updating A Table Column Which Is XML Datatype
Nov 1, 2011I am updating a table column which is xml datatype and am getting above error.Below is the process what i did. since the xml is too large i split them into small chunks.
DECLARE
conditionXML CLOB;
ls_xml_2 Clob;
ls_xml_3 clob;
ls_xml_4 Clob;
ls_xml_5 Clob;
ls_xml_6 clob;
ls_xml_7 Clob;
[code]...
Update Using CLOB Datatype In Oracle
Aug 16, 2010how can i update CLOB values in Oracle? I am passing string values to Clob datatype from .Net Eg '13223311','12122112','122125552'
View 6 Replies View RelatedSQL & PL/SQL :: Convert From LONG To BLOB Datatype?
Feb 1, 2012I have a source data in a column with LONG datatype. I want to insert that data into a separate table in a column which has BLOB datatype.
View 9 Replies View RelatedSQL & PL/SQL :: How To Fetch Value Which Column Has Timestamp Datatype
Oct 14, 2012 i am running one query which is here
INSERT INTO shiftsample (Empid, PPDate, Inpunch, outpunch)( SELECT Emp_ID, PDate, In_Punch, Out_Punch FROM ProcessDailyData WHERE PDate = to_char(2012-10-15,'yyyy-MM-dd') AND Emp_ID = '00000001' );
in this query pdate has timestamp datatype and in shift sample ppdate column has date type. so i am not able to insert value from process daily data table.
getting this error.
SQL Error: ORA-01481: invalid number format model
01481. 00000 - "invalid number format model"
*Cause: The user is attempting to either convert a number to a string
via TO_CHAR or a string to a number via TO_NUMBER and has
supplied an invalid number format model parameter.
SQL & PL/SQL :: Insert Value In Column Which Has Date Datatype?
Oct 12, 2012i am having one column name pdate with date datatype
i am updating here value like this
update table1 set pdate='15-10-2012' where id=1;
but showing error: not a valid month.
how to update this.
SQL & PL/SQL :: Finding MAX And MIN Value From Varchar Datatype Field
Mar 13, 2013How to get max and min value from a varchar2 datatype column?
CREATE TABLE TEST
(
WEIGHT VARCHAR2(20)
);
INSERT INTO TEST VALUES('100');
INSERT INTO TEST VALUES('120');
INSERT INTO TEST VALUES('113');
INSERT INTO TEST VALUES('145');
INSERT INTO TEST VALUES('204');
INSERT INTO TEST VALUES('130');
I've to find the max and min weight from this data.
SQL & PL/SQL :: BLOB Datatype - Copy From One Column To Another
Mar 11, 2011I have two tables with BLOB datatype. I am trying to copy from one column to another column , i am getting errors
CREATE OR REPLACE PROCEDURE update_blob_lob_copy(
v_id in integer,
v_string in varchar
)
as
auditlob lobdemoaudit.theblob%type;
sourcelob lobdemo.THEBLOB%type;
[code]...