SQL & PL/SQL :: How To Update Clob Value
Nov 13, 2012
I the table VOYAGERS with the following data.
ID is of type number and DETAILS is of type CLOB.
ID DETAILS
--- --------
100 The ship has left san diego http:/localhost/icons/sandiego.png to okinawa on nov 10, 2011.
I need to update the record(id = 100) by replacing the url "http:/localhost/icons/sandiego.png" with "http:/localhost/icons/okinawa.png".
I need a procedure where I will pass the ID value, replace string(i.e http:/localhost/icons/sandiego.png) and replace with string (ie. http:/localhost/icons/okinawa.png).
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Aug 16, 2010
how can i update CLOB values in Oracle? I am passing string values to Clob datatype from .Net Eg '13223311','12122112','122125552'
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Aug 30, 2010
I am encountering an error message while updating a xmltype column using dynamic sql statement. I am using dynamic sql here as the table is not placed in the same schema from where the plsql procedure is invoked. The schema name is passed to the procedure as an argument. I am using below pseudo code for this purpose.
Create procedure myproc(p_schemaname varchar2, p_id number)
is
p_clob clob;
p_str varchar2(2000);
begin
[code]...
This is throwing an error 'missing expression' at the line of 'exeute immediate'.
But it works if I run a static sql update by hard coding the schema name in the statement.
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Feb 21, 2011
How to update a CLOB column in a table, suppose the string is greater than 4000 size.
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May 14, 2010
I have a base table (Table A) block with multiple records displayed. I need to track audits to this underlying table in the following way:
If user updates a field in the block I want the pre-changed record's audit fields to be set and I need to create a copy of the record with the changed values. Basically any changes will result in the record being logically deleted, and a copy record created with the newly changed values.
Tried to implement in the block's pre-update trigger which will call a package to directly update Table A then Insert into Table A, then requery the block. Is there a clean and efficient way to do this?
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Sep 7, 2010
I have to update 20 and 60 million records of a table. The update statement are
1> 20 million recs
update mycustomer set update_time=add_months(sysdate,240) where seq_num = 1;
commit;
2> 60 million recs
update mycustomer set update_time=sysdate-seq_num where seq_num <> 1;
commit;
Q1> Is there any way to improve performance
Q2> Will parallel dml improve performance
Q2> Would a pl/sql cursor make any difference in speed.
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Aug 17, 2010
This is my query:
UPDATE t_tt_hours a
SET a.sak_request = (
SELECT b.sak_request
FROM t_requests b, co c
[Code]...
The problem I am having is that it is updating all rows even when it is pulling back a null value for b.sak_request. I've tried adding b.sak_request is not null to the select statement like this:
UPDATE t_tt_hours a
SET a.sak_request = (
SELECT b.sak_request
FROM t_requests b, co c
WHERE b.nam_eds_tracking_id = c.id_dir_track_eds
[Code]...
but it doesn't seem to make a difference. The reason I need to do this is that the difference between where it matches with a valid (non-null) value is 396 rows vs. 12,484 rows which is too time consuming to run on my page.
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May 29, 2012
i want to create a trigger that will update a table when there is an insert or update.i can't across this error that i don't even know what it means "table %s.%s is mutating, trigger/function may not see it".
*Cause: A trigger (or a user defined plsql function that is referenced in this statement) attempted to look at (or modify) a table that was in the middle of being modified by the statement which fired it.
*Action: Rewrite the trigger (or function) so it does not read that table.
CREATE OR REPLACE TRIGGER set_date_end
BEFORE INSERT OR UPDATE OF issued ON shares_amount
FOR EACH ROW
DECLARE
BEGIN
INSERT INTO shares_amount(date_end) VALUES(SYSDATE);
END set_date_end;
/
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Mar 6, 2013
create table test1
( ID NUMBER(11)
,MEMBER_NMBR NUMBER(10)
,CODE_NMBR NUMBER(7)
,ROW_EFCTV_DT DATE
,ROW_TRMNTN_DT DATE
[code]....
insert into test1 values (11007,7462,32,'30/sep/2012','31/dec/9999',3,'25/sep/1998','AUTUMN',1,0,344);
insert into test1 values (11007,7462,32,'30/oct/2012','31/dec/9999',3,'25/sep/1998','AUTUMN',1,0,344);
IDMEMBER_NMBRCODE_NMBRROW_EFCTV_DTROW_TRMNTN_DTFLAG_NMBRBRTH_DTNAMECLAIM_CDAMT1AMT2
1100774623209/30/2012 00:0012/31/9999 00:00309/25/1998 00:00AUTUMN10344
1100774623210/30/2012 00:0012/31/9999 00:00309/25/1998 00:00AUTUMN10344
I have to update the row_trmntn_dt of first row to row_efctv_dt of 2nd row which is 30th Oct 2012 - 1 day i.e. 29th Oct 2012
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May 30, 2013
i am reading the columns value from different table but i want to update it with single update statement. such as how to update multiple columns (50 columns) of table with single update statement .. is there any sql statement available i know it how to do with pl/sql.
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Mar 21, 2011
I have one doubt about update command in sql. How to update the multiple rows with different values using update statment.
Eg:-
SQL> set linesize 500;
SQL> set pagesize 500;
SQL> select * from emp;
SQL> select empno,ename,sal from emp;
SQL> select empno,ename,sal from emp;
EMPNO ENAME SAL
---------- ---------- ----------
7839 KING 5000
7698 BLAKE 2850
7782 CLARK 2450
7566 JONES 2975
7654 MARTIN 1250
[Code]....
The above table contains 14 records. Now i would like to update the salary column with different values like
EMPNO SAL
===========
7839 18000
7698 20000
7782 5000
...
...
...
7934 25000
How to update above values with single update query.
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Jan 25, 2012
After many tests I can't make work and update of the same table inside the same table.
Trying to avoid Mutating Table Error now I have
ORA-00036: maximum number of recursive SQL levels (50) exceeded
Sample Data :
create table test_compound (USERID VARCHAR2(10),APP VARCHAR2(15),LAST_UPDATED_ON TIMESTAMP);
insert into test_compound values ('user1','1',systimestamp);
insert into test_compound values ('user2','2',systimestamp-4);
insert into test_compound values ('user3','3',systimestamp-6);
CREATE OR REPLACE TRIGGER trigger_test
FOR UPDATE ON test_compound
COMPOUND TRIGGER
TYPE t_tab IS TABLE OF VARCHAR2(50);
l_tab t_tab := t_tab();
[code].......
When I execute :
update test_compound
set last_updated_on=systimestamp
where userid='user1' and app='1';
The trigger should update the first row and all the data from test_compound table where userid='user1'. Maybe the problem is that updating the same table inside the trigger is firing in a recursive way the trigger.
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Jul 19, 2011
I have a column "empno" in EMP table and "deptno" in DEPT table . I want to update both the columns with single UPDATE statement. With out a creation of stored procedure or view(updating it through view).
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Sep 28, 2011
I'm writing a PHP page to display some data from an Oracle database. Unfortunately, I can't copy the code because it's proprietary. One of the columns in the db is of type CLOB. I'm having trouble getting the data from the CLOB column.
The way the code is now, is there is a query string read into a variable, and the query string variable is read into a function that then retrieves the data from the db. Once the result set is returned, it is parsed to get data from all of the columns. The issue is that I've never worked with CLOB data before, so I'm having some difficulty extracting the data for that column. I know I can use the DBMS_LOB.READ function, but I'm not sure how to apply it in this case. The following is a generic form of the query string I'm using with b.clob_col being the column I'm having issues with.
$queryString = <<<EOD
SELECT a.col1,
a.col2,
a.col3,
b.col4,
b.col5,
b.clob_col,
from table1 b
inner join b.col4
on blah1
inner join a.col2
on blah2
where blah
and blah
EOD;
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Nov 9, 2011
create table top_uid(oldUID number,newUID number);
select * from top_uid;
OLDUID NEWUID
---------------------- ----------------------
1 1001
2 1002
3 1003
4 1004
create table topdUIDXML (uidinfo clob);
insert into topdUIDXML select '<filter name="test" topologyUID="1">' from dual;
insert into topdUIDXML select '<filter name="test2" topologyUID="2">' from dual;
insert into topdUIDXML select '<filter name="ftest" topologyUID="3">' from dual;
insert into topdUIDXML select '<filter name="qtest" topologyUID="4">' from dual;
select * from topdUIDXML
UIDINFO
---------------------------------------
<filter name="test" topologyUID="1">
<filter name="test" topologyUID="2">
<filter name="test" topologyUID="3">
<filter name="test" topologyUID="4">
the topdUIDXML table will contain the oldUID's in the clob XML. need to update the topologyUID in that topdUIDXML with the newUID from the top_uid.
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Nov 30, 2011
How can I insert xml to clob ? I'm taking from database clob making it in xml type and when I want to insert xml type into clob field it calls and error:
Error(316,43): PL/SQL: ORA-00932: inconsistent datatypes: expected NUMBER got -
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Mar 23, 2010
in our application we are using clob column instead of varchar2 because varchar2 does not allow more that 4000 chars, so Using clob allows to put data of any length, will it cause performance issues ? we have this column in almost in all tables .
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Oct 18, 2011
I have to generate a big xml. Each part of the xml needs data from different tables. So I have created two clob to hold the portion of the big xml. How can i have the concatenated clob values as an argument for xml element.
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Apr 21, 2011
Ok, CLOB columns are such a hassle.
I have a variable in my script: v_field1 VARCHAR2(32000);
This is part of a cursor record:
v_mf_table IS TABLE OF mf_detail%ROWTYPE INDEX BY BINARY_INTEGER;
v_mf_record v_mf_table;
I use a FORALL to insert the data into a table:
FORALL x IN v_mf_record.FIRST .. v_mf_record.COUNT
INSERT INTO monthly_mf_snapshot VALUES v_mf_record(x);
BUT! v_field1 is > 4000 characters. Does this trash my changes of using FORALL? Do I need to deal with 4k chunks in an UPDATE instead?
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Apr 26, 2013
I have table like-
CREATE TABLE C2X_TEST(NAME VARCHAR2(100),XML_CLOB CLOB,XML_XML XMLType);
here in XML_CLOB column xml files are stored.
Now i want to update XML_XML column with corresponding XML_CLOB value .
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Jun 18, 2012
Working on building an application which will be in C# (.NET 3.5) and some PL/SQL. However, for the tables which have to store the data, I added a column, comments, to the table and assigned it a data type CLOB. No big deal, except my PL/SQL function is giving me errors if the CLOB built from several varchar2 rows exceeds 4000 characters. I understand the varchar2 field is restricted in 10g, but I was under the impression there wasn't such a restriction on a CLOB (hence the reason we're using it.)
I end up getting:
ORA-6502: PL/SQL: numeric or value error: character string buffer too small
ORA-6512: at line 1
06502. 00000 - "PL/SQL: numeric or value error%s"
*Cause:
*Action:The db is 10g (will be upgrading to 11 in October, needs to work on both) on a Windows Server 2003 box (Archive/backup server and db)
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Aug 24, 2010
I want to execute a procedure and view its output. The procedurename is GET_clnts which has one of the parameters as clob where i am passing xmltype data to it.How can i execute the procedure to view the output. i can execute the SQL statement by itself, but not sure how to call a procedure from a plsql block..
DECLARE
clientid NUMBER;
OUT_RESULTSET clob;
BEGIN
GET_clnts ( clientid, OUT_RESULTSET);
DBMS_OUTPUT.Put_Line('');
END;
[code]...
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Sep 10, 2012
any way to select the clob value from dblink.?
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Mar 28, 2008
How to convert a varchar2 column to CLOB when there is a thousands of records in it.
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Oct 7, 2013
We have oracle 10 g and a table contains a clob field . The table size is getting increased day by day . We have decided to zip all the clob data inside the table except last 1 month records.
Table : GENERIC_MESSAGE
Column:
message_id(number)
received_date(date)
message_xml(clob)
How we can do that keeping in mind this is huge data is present in table and huge transaction happened (10k transaction/hr)?
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Oct 18, 2010
I m getting the following error when using the clob in execute immediate : 'ORA-22275: invalid LOB locator specified'
declare
v_final_output1 clob := empty_clob;
v_stmt varchar2(32000);
begin
select source into v_stmt from table t where t.id =123 ;
[code]....
Note that error comes after the execute immediate when i try to display the content of v_final_output1;
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Aug 10, 2012
I'm trying to import data from a csv file format which is located in a CLOB column in a single record in the database. I want to import the data that is contained in this CLOB into a table. I am having limited success using JH_UTIL. Here's the script that I am running (which works):
set serveroutput on;
declare
v_lines jh_util.stringlist_t;
v_values jh_util.stringlist_t;
begin
for rec in (select 1 id, ac.clob_content csv
[code].......
The problem is when the file gets too big, I get a the following error:
Error report:
ORA-06502: PL/SQL: numeric or value error
ORA-06512: at line 6
06502. 00000 - "PL/SQL: numeric or value error%s"
*Cause:
*Action:
I assume this means because the file size is too big. Is there any way to process larger "files" (CLOB data)
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Feb 2, 2012
I am trying to insert complex HTML into a CLOB value in an Oracle table and keep running into various issues. The ORA errors I get include 0734, 0042 and 0552. The HTML I am inserting includes characters such as &, ', and *.
Here is an example of the SQL I am trying to run:
set DEFINE off'
update table
set message = '<HTML>TEST!@#$%</HTML>';
commit;
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Sep 19, 2011
I want to convert Clob column datatype to NClob datatype. I tried to modify the column by using below method but got the mentioned error:
SQL> alter tab1 TABLE_NAME modify COLUMN_NAME nclob;
*
ERROR at line 1:
ORA-22859: invalid modification of columns
One of the other method with which I am familiar with is :
Quote:
First to Create a new column of the desired type and copy the current column data to the new type using the appropriate type constructor.
how to change the clob to Nclob datatype without using the temp column usage?
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Nov 20, 2012
Just wanted to export a clob field to .txt file, the maximum length of the clob field exceeds the limit 32767. So only partial data is exported to flat file. is there any way to export the entire data available in clob field irrespective of the size or lenght.
Length of the clob is 301829
l_file := UTL_FILE.fopen('LOCALDIR', '3.txt', 'w', 32767);
LOOP
DBMS_LOB.read (v_text_exp, l_amount, l_pos, l_buffer);
UTL_FILE.put(l_file, l_buffer);
l_pos := l_pos + l_amount;
END LOOP;
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