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 .
I ave a few fields in my flat file which might be a CLOB (not sure how the source is storing the data - need to check on that.) I am trying to load this data into my table column which is a varchar2(4000) . I am able to insert most of the data but few records are rejected because of Field too long error....
While debugging the problm I manually copied the field from flatfile and inserted into my table - bingo it worked. (The field was not more than 1000 bytes - only a few lines of information ) My question: When a field is not more than 1000 bytes why couldnt it get inserted as a varchar2?
Note : I cannot make the table column as CLOB because the problem is not with just one column - I have 10 fields which have this problem . So its not advisable to have 10 CLOB fields in the table......
I have specified OPTIONS (BINDSIZE=256000,READSIZE=256000,ROWS=1)
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.
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?
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.
I'm updating a large piece of legacy code that does the following type of insert:
INSERT INTO foo_temp (id, varchar2_column) SELECT id, varchar2_column FROM foo;
We're changing varchar2_column to clob_column to accommodate text entries > 4000 characters. So I want to change the insert statement to something like:
INSERT INTO foo_temp (id, clob_column) SELECT id, clob_column FROM foo;
This doesn't work, since clob_column stores the location of each text entry, rather than the actual content. But is there some way that I can achieve the insert with one call to a select statement, or do I need to select each individual record in foo, open the clob_column value, read it into a local variable and then write the content to the matching record in foo_temp?
I have a table that contains a CLOB column with pseudo-XML in it. I want to keep this data in an XMLType column so that I can leverage some of Oracle's built-in XML features to parse it more easily.
The source table is defined as: CREATE TABLE "TSS_SRM_CBEBRE_LOGS_V" ( "INCIDENT_ID" NUMBER, "EVENT_TYPE" VARCHAR2(100 BYTE) NOT NULL ENABLE, "EVENT_KEY" VARCHAR2(100 BYTE), "CREATION_DATE" TIMESTAMP (6) NOT NULL ENABLE, "CREATED_BY" VARCHAR2(100 BYTE) NOT NULL ENABLE, "LOG_MSG" CLOB);
The target (for testing this problem) table is defined as: CREATE TABLE "TESTME" ( "LOG_MSG" "XMLTYPE") My query is: insert /*+ APPEND */ into testme ("LOG_MSG")select XMLTYPE.createXML("LOG_MSG") as LOG_MSG from "TSS_SRM_CBEBRE_LOGS_V" b; In SQL*Developer, my error is: Error report:SQL Error: No more data to read from socket In SQL*PLUS and Toad, my error is: ORA-03113: end-of-file on communication channelProcess ID: 13903Session ID: 414 Serial number: 32739
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')
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.
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.
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?
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 ?
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;
I have a table in oracle sql developer showing years, IDs and attendance etc I'm wanting to create a report based on this table but have encountered a problem with the years.
The years currently run from 2006 to 2009 and the problem is that some of the IDs are only present for say 2007 and 2008, thus leaving nothing for 2006 and 09. This in turn creates problems in the report.
What i would like to do is in the table, for each ID that is missing any years, is to insert a single row with just the ID and year so that in the report it will show a blank instead of nothing at all. So for the above example i would have numbers for 2007 and 2008 and for 2006 and 2009 there would just be a space.
I am inserting XMLTYPE data using DBLINK I am getting the following error.
INSERT INTO APSP.SALES_HISTORY@APSP_LINK SELECT * FROM KMBS.SALES_HISTORY
ORA-22804: remote operations not permitted on object tables or user-defined type columns
Source table structure
Name Null? Type ----------------------------------------- -------- ---------------------------- SC_NO NOT NULL NUMBER(25) LT_DATE TIMESTAMP(6) METHOD XMLTYPE
Target table structure(another DB)
Name Null? Type ----------------------------------------- -------- ---------------------------- SC_NO NOT NULL NUMBER(25) LT_DATE TIMESTAMP(6) METHOD XMLTYPE
I used decode & pivot insert for this,but the result is a failure.
SQL>INSERT INTO test22 (no,name) SELECT DECODE(col1,'n',col2),DECODE(col1,'name',col2) FROM test22p;
SQL> sno sname -------- 1 null null arun
AND
SQL> INSERT ALL 2 INTO test22 VALUES(no) 3 INTO test22 VALUES(name) 4 SELECT DECODE(col1,'n',col2),DECODE(col1,'name',col2) FROM test22p; INTO test22 VALUES(name) * ERROR at line 3: ORA-00904: "NAME": invalid identifier
In my organization, I have a table and in that there is a column named "code".I want to restrict some insertion to that particular column. suppose that code column values are 12 and 1245 then i cant insert the value 12,1245, 1 ,124 and so on but i can insert 2 ,123,15,12456 and so on.
that means the new values should not be any substring of the existing data from left. making that column primary key and then I had a logic to compare the existing value which are longer than the new value and then to perform this.But dont know how to make it happen correctly.
I am trying to insert a column into a variable from a trigger.
Here is the code that i have:
CREATE OR REPLACE TRIGGER BUYER_after_update AFTER UPDATE ON buyer FOR EACH ROW DECLARE v_key varchar2(10); BEGIN select ID into v_key from buyer; insert into message_log_table (table_name, message_comments) values ('Buyer', 'Buyer '||v_key||' has been updated'); end; /
When I run the above I get the following compiler error:
Since ID is defined in my BUYER table I do not understand what the error means.
Here is my create table statement:
CREATE TABLE BUYER ( ID VARCHAR(50) NOT NULL PRIMARY KEY, FNAME VARCHAR(50) NOT NULL, LNAME VARCHAR(50) NOT NULL, ADDRESS VARCHAR(50) NOT NULL, CITY VARCHAR(50) NOT NULL, STATE VARCHAR(2) NOT NULL, ZIP_CODE NUMBER(5) NOT NULL );
I am facing problem while inserting data into Core Table from staging (both Core Table and Staging are on same database but different schema)
I am using below command:
INSERT /*+ APPEND PARALLEL("CORE TABLE", DEFAULT, DEFAULT) */ INTO SELECT DATA from Staging
CORE TABLE is quit big contains millions of record partition on date and having old stats of 2007. Data fetching from staging is very fast appx 1 million record in 2 mins. we are inserting one day data daily into CORE TABLE from staging and its taking 3 Hrs.
How to Insert the data in Repeating Tables. I mean Suppose One Student has many Addresses like home,office,permanent etc.
There is one column in this table sequence_no. while Inserting a record how to insert this sequence no I don't know It maintains unique sequence no for each student.
If student has 3 addresses then Its seq no is 3.
I am inserting through a procedure where multiple students data is to be inserted.
