SQL & PL/SQL :: Bulk Update - Two Tables
Dec 5, 2011
I am trying to write an update using two tables, one table contains the list of updates to be applied, and the second contains the old data. I have a working solution but I was wondering if there might be some other better way to accomplish this task.
CREATE TABLE foo
(
foo_id NUMBER,
foo_val NUMBER
);
CREATE TABLE foo_change
(
foo_id NUMBER,
foo_val NUMBER
[code]...
The update works, but I thought there may be a better way I just don't know about.
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Mar 28, 2012
I have performance issue with the bulk update. I have 2 tables one with 21 millions of data and the other table with 2 millions of data.here the requirement is to update the table which is having 21 millions with the other tables data(which is having 2 million records) based on some matching criteria.
The procedure is taking 9 hours to update the table(which is having 21 millions data). I have created required indexes on table also.But the performance is not good.
Here my procedure:
CREATE OR REPLACE PROCEDURE AHM_GKPR.CLAIMS_WITHOUT_PARTITIONS
IS
TYPE T_PL_CO IS TABLE OF VARCHAR2(3) INDEX BY BINARY_INTEGER;
L_PL_CO T_PL_CO;
TYPE T_PL_CD IS TABLE OF VARCHAR2(9) INDEX BY BINARY_INTEGER;
L_PL_CD T_PL_CD;
TYPE T_PL_NB IS TABLE OF VARCHAR2(10) INDEX BY BINARY_INTEGER;
L_PL_NB T_PL_NB;
TYPE T_SE_CD IS TABLE OF VARCHAR2(1) INDEX BY BINARY_INTEGER;
L_SE_CD T_SE_CD;
TYPE T_BIR_DT IS TABLE OF DATE INDEX BY BINARY_INTEGER;
[code].........
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Apr 18, 2013
My oracle version is 10g.I want to update a table which has 2 million rows and 20 columns. I want to update 3 columns in my table based on a query output.
Say:-
select decode(col1,'a',col2,col3) up_col1, decode(col5,'Y',20,30)* col6 up_col2, col7 up_col3 from base_tab a, update_tab b where a.key = b.key
I tried the simple update SQL, it hangs and never comeback even after 2 hrs.So I resort to PLSQL to complete my job using bulk collect with limits. Now I am stumbled upon with the Bulk update step.I referred to the BULK Update example given in [URL]...
I gone by 9i approach, I got invalid rowid error. Since the example doesn't uses a join.
I am little bit worried to go by 10g approach given in the example. I have to fetch entire row from my update table. My update table has 5 varchar(1000) fields. Anyway I am not going to affect them in my update. Whether it will occupy memory and again leads to hanging of my procedure.
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Dec 15, 2008
Has 2 tables with the following columns
1.abc_y (notes,frmt)
sample data:
notes:
i live in texas and work in AIG.
2.abc_z(tags_name)
sample data:
tags_name:
live in work.We shoud look for tags_name in notes field of abc_y. If we encounter any tags_name in notes field they should be removed and inserted in frmt field Now the column format should be updated to 'i texas and AIG'.abc_y has 2 million rows and abc_z has 120 rows.wrote the code sucessfuly but cannot bulk update it, which is really needed for me.
I am havin some problm in FOR LOOP after FORALL in the folowing.
DECLARE
l_sql_strng VARCHAR2 (20000);
TYPE var_tab IS TABLE OF VARCHAR2 (20000)
INDEX BY BINARY_INTEGER;
l_text_arry var_tab;
CURSOR c1
[code]...
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Aug 3, 2012
optimize this code. Scenario have to update about 40 million rows to static value, I'm committing 1Million rows in one loop. The first 1 millions rows are getting updated very fast probably in a 2 minute, after that the code just hungs and i don't see increase in committed rows.
Declare
cursor c1 is
select rowid from t1
where c1 is not null;
[Code]....
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Jun 19, 2013
I have more than 10 lakhs records in the table for which i am going to update two columns without any filtration. i have pasted my query in it..it's taking more time to update..is there any way to fine tune this block.
DECLARE
l_fallback_page Au_Case_Parallel_19062013.page_num%TYPE;
l_fallback_kwd Au_Case_Parallel_19062013.Fallback_keyword%TYPE;
lv_type varchar2(1000);
[Code]....
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Jan 25, 2013
I am trying to update a table column values if any change occurs using bulk collect and for all update not able to get idea. below is the proc working out.it is for insert and update using the cursors.
CREATE OR REPLACE PROCEDURE PRC_INS(P_ID IN NUMBER,P_STAT OUT NUMBER) IS
TYPE T_TEST_TAB IS TABLE OF T_DTLS%ROWTYPE;
V_PARAM T_TEST_TAB;
V_STATUS NUMBER;
V_BUS VARCHAR2(20);
V_UP VARCHAR2(1);
V_Q VARCHAR2(50);
[Code]....
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May 5, 2010
Im a oracle pl/sql developer but I didnt learn oracle as a language. With my sql skills I started working on Oracle.In my project every table has an associated MLOG$ table for it.
For eg.
CREATE TABLE MLOG$_TEST
(
ID VARCHAR2(64 BYTE),
SNAPTIME$$ DATE,
DMLTYPE$$ VARCHAR2(1 BYTE),
OLD_NEW$$ VARCHAR2(1 BYTE),
CHANGE_VECTOR$$ RAW(255)
)
So is MLOG$_TEST oracle's internal table.
Whenever an insert/update/delete happens it is recorded in MLOG$ tables as I/U/D for the priamry key.So if I do a bulk delete of records in tables an entry is made into MLOG$ tables. So deleting old records in a database doesn't free much space.If this is oracle internal table is it advisable to delete from MLOG$ tables too.
My oracle database is mounted on the Linux server.If I delete bulk records in tables from which path I can see how much space is freed.
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Apr 28, 2010
I am trying to write an Update that really frustrates me because it won't work for one reason or another.The situation is that I have two tables for customer information, t1 with the names of the customer and t2 with the address.These two can be joined via a client_id.
Now I have a third table t3 with the name and address of potential customers. I want to find out if some of them are already known to me so that I can update the client_id from table t1 or t2 into t3.
I have to join firstname, lastname from t3 to firstname, lastname from t1 and street, zip, city from t3 to street, zip, city from t2 and client_id from t1 to t2. Additional there is the problem that there can be more than one result so I have to update one of the found client_ids per name/address into t3.I am no expert to PL/SQL, I just know what SQL works in Access and that is:
UPDATE (t3 INNER JOIN t1
ON (t3.firstname= t1.firstname) AND (t3.lastname = t1.lastname)) INNER JOIN t2
ON (t3.city = t2.city) AND (t3.zip = t2.zip) AND (t3.street = t2.street) AND (t1.client_id = t2.client_id)
SET t3.client_id = t1.client_id;
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Mar 24, 2012
I have a table called test_renames that has two columns(new_name and old_name) and one row with the following values
NEW_NAME OLD_NAME
DRUG10 DRUG1
I have another table called SH0 that has 10,000 rows and the column of interest is called ITEM1. ITEM 1 contains the following distinct drug names:
DRUG1,DRUG2,DRUG3,DRUG4,DRUG5
Each DRUG has multiple rows associated with it.
I need to only update rows for DRUG1 and set the name from DRUG1 to DRUG10 for all rows where ITEM1 is DRUG1.
However I need to write this update statement by joining with the values in the test_renames table that contains the NEW_NAME and the OLD_NAME.
DRUG1 has 2,000 rows associated with it. The following SQL statement gives me 2,000 rows
(SELECT NVL(CHG.NEW_NAME, SH.ITEM1)
FROM test_renames CHG,sh0 sh
WHERE UPPER(SH.ITEM1) = UPPER(CHG.OLD_NAME)
AND UPPER(SH.ITEM1) IN (SELECT UPPER(OLD_NAME) from test_renames))
However when I run the following update statement, it appears that the SQL query updates all the 10,000 rows in the table instead of just touching the 2,000 rows for DRUG1. It does change all the rows for DRUG1 to DRUG10, but all the other ITEM1 values become null. What I need from the update statement is only chnage the rows for DRUG1 to DRUG10 and leave the other rows that I associated with DRUG2, DRUG3 etc. Here is my update statement.
UPDATE SH0 SH
SET ITEM1 = (SELECT NVL(CHG.NEW_NAME, SH.ITEM1)
FROM test_renames CHG
WHERE UPPER(SH.ITEM1) = UPPER(CHG.OLD_NAME)
AND UPPER(SH.ITEM1) IN (SELECT UPPER(OLD_NAME) from test_renames))
This update statement touches all 10,000 rows. I am looking to update only the relevant 2,000 rows for DRUG1.
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Aug 26, 2010
I am issuing an update statement in which I am using multiple tables it is giving me an error " set keyword missing"
update E_CONT_DETAIL_NUMB_VALUE ecdnv, y_obj_category yoc, t_contact tc
set ecdnv.ContTPRecCount = 1000
where tc.default_category_id = (select primary_key from y_ojb_category where tree_position = 'CONT')
and ecdnv.detail_field_id=tc.default_category_id;
update E_CONT_DETAIL_NUMB_VALUE ecdnv, y_obj_category yoc, t_contact tc
*
ERROR at line 1:
ORA-00971: missing SET keyword
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Nov 22, 2011
How to update two tables in single set or single query ?
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Nov 21, 2012
I have to write a "after update trigger". Here, i have to update the stock table by other inventory tables (by complex query).
I have written trigger below. how to make it correct?
create or replace trigger trg_stk_upd_pur
after update on O_STOCK_EFFECTS
REFERENCING NEW AS new OLD AS old
FOR EACH ROW
[Code]....
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Oct 15, 2012
I want to read 1 table. If the date is less than today, I want to update 4 other tables. I only want to do this update once a day.
While the 4 other tables are being updated, I want the other web users to pause for the update while this procedure runs.
Is there a better way to do this?
Here is what I have:
CREATE OR REPLACE PROCEDURE TEST_TODAY2 AS
-- to create the table
-- create table test_today(updated_date date);
-- insert into test_today(updated_date) values (sysdate-1);
-- select * from test_today;
cursor daily_update_cur is
select updated_date from test_today
for update of updated_date;
[Code]...
Please use {noformat}{noformat} tags before and after your code as described in the FAQ: {message:id=9360002}.
I've corrected it this time for you.
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Jan 21, 2011
I can't seem to get away from writing php scripts to handle the update. I want to learn to use procedures more. What I have is a table like this:
courses(
id number(16) pk,
Division_title varchar2(100),
department_title varchar2(100)
I also have a temp table where I upload updated data into from time to time it looks like this
load_updates_courses(
id number(16) pk,
div_desc varchar2(100),
dep_desc varchar2(100)
)
Currently when I need to update the courses table, I write a php script to do the update. But what I really would like to do is write a procedure I could call to handle this.
I figured I need to loop over the recordsets in the update tables then do a update but I can't figure out how to get started with the plsql.
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Oct 15, 2012
is it possible to update a same column name in two tables.
I have two tables in same schema
(1)table name
pem.igp_parent
column name
igp_no.
igp_type
(2)table name
pem.igp_child
column name
igp_no.
igp_type
i want to update igp_no column in one query, how it would be possible.
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Oct 2, 2012
We have to update a single column data in about 10 tables which has child/parent table relations, pk/fk constraints.. The column that we are updating is a part of primary key in half of the tables and part of foreign key in the other half tables.. I'm thinking of disabling all the foreign key constraints in the tables then update the column data then enable the foreign key constraints in these tables.
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Sep 6, 2013
I am trying to update multiple columns from one table based on the results of another table So I have 3 tables as follows
HISTORYSUMM_SNAPADM_CHOICE
My SQL code is loosely SELECT SUM(H.HIS1),
SS.SNAP1,
AC.ADM1FROMHISTORY H,
SUMM_SNAP SS,ADM_CHOICE ACWHERE H.HIS2=SS.SNAP2AND SS.SNAP3=AC.ADM2GROUP BY SS.SNAP1,
AC.ADM1
This works, and I am able to SUM the column as I need with the right numbers. I altered the SUMM_SNAP table and now I want this summarized column to be in the table I tried using UPDATE, but there is no FROM clause to let me do the table join/group by
UPDATE SUMM_SNAPSET SUMM_SNAP.SNAP3=SUM(H.HIS1)FROMHISTORY H,
SUMM_SNAP SS,ADM_CHOICE AC
WHERE H.HIS2=SS.SNAP2AND SS.SNAP3=AC.ADM2
GROUP BY SS.SNAP1, AC.ADM1
The above is obviously wrong - but just trying to show whatI was thinking What would be the best method to get the numbers from the SUM into a table?
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Jun 14, 2013
Was going through this and found that
“AUDIT DELETE ANY TABLE BY <username> BY ACCESS” or “AUDIT UPDATE ANY TABLE<username> BY ACCESS”
enable audit for delete and updates for given username/schema. I want to enable auditing on delete and update on my entire database.
Why? And have we tested it in our any of existing setup? I am thinking of “Trigger after delete” but again this logic gets struck at individual tables. It do not work simply once and all for complete database/all users/all schemas
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Dec 17, 2010
How to get all the name of tables that a user can select, insert, update or delete?
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Apr 8, 2010
i have two tables test1 and test2. i want to update the column(DEPT_DSCR) of both the tables TEST1 and TEST2 using select for update and current of...using cursor.
I have a code written as follows :
DECLARE
v_mydept1 TEST1.DEPT_CD%TYPE;
v_mydept2 TEST2.DEPT_CD%TYPE;
CURSOR C1 IS SELECT TEST1.DEPT_CD,TEST2.DEPT_CD FROM TEST1,TEST2 WHERE TEST1.DEPT_CD = TEST2.DEPT_CD AND TEST1.DEPT_CD = 'AA' FOR UPDATE OF TEST1.DEPT_DSCR,TEST2.DEPT_DSCR;
[code].......
The above code when run says that it runs successfully. But it does not updates the desired columns[DEPT_DSCR].
It only works when we want to update single or multiple columns of same table...i.e. by providing these columns after "FOR UPDATE OF"
I am not sure what is the exact problem when we want to update multiple columns of different tables.
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Apr 9, 2011
I'm writing a Procedure which Updates or Inserts data in Multiple tables. Selected fields of 10 tables need to be updated or Inserted. For this I created a table which comprises of fields related to all 10 tables. Then I write Procedure. Under this I create a Cursor which uploads the data from the newly created table which contains different fields of 10 tables. Then I write Update and Insert statements one by one for all 10 tables.
Sample Procedure below.
-------------------------------------------
Create or replace procedure p_proc as
spidm spriden.spriden_pidm%type;
cursor mycur is select * from mytable;
begin
for rec in mycur
[code]......
----------
Note: I created table on my server because data is coming from different server. They will upload the data in the table from there I pick and update the tables. Is updating or Inserting data in different tables one by one is correct?
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Feb 15, 2011
I am trying to update a million rows in one table with the values from another tables.
Table being updated CI_ADJ_CHAR column CHAR_VAL_FK1
Table from which values will be used CK_ADJ columns (cx_id, ci_id)
The CI_ADJ_CHAR.CHAR_VAL_FK1 values match CK_ADJ.CX_ID and should be updated with the value CK_ADJ.CI_ID.
The CK_ADJ table has 1.3 million rows and both the columns have indexes defined. Table definitiuon mentioned below
The CI_ADJ_CHAR table has 14 million rows and will update 1 million rows and has an index on the ADJ_ID column but not on the CHAR_VAL_FK1 column.
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Jun 13, 2012
I have a parent table EMPLOYEE which includes columns (sysid, serviceno,employeename...) sysid is Primary key, serviceno is Unique key and I have child table DEPENDENT includes columns (sysid,employee_sysid,name,dob...) here again SYSID is primary key for DEPENDENTS table, employee_sysid is Foreign key of EMPLOYEE table.
Now I want to change SYSID (using sequence) in EMPLOYEE table which need to be update in DEPENDENTS table as well
Note: I have 10000 records in EMPLOYEE table as well as I have 5 more child tables which need to update new SYSID.
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May 16, 2011
what is the error in this procedure.I am getting error where s.msg_id = Tbl_Repo_Salo (i.msg_id));
Create or replace Procedure Proc_Stg_Clear(P_Err_Code OUT NOCOPY number,
P_err_msg OUT NOCOPY varchar2) as
v_count number;
Type Repo_Salo is table of Tbl_Tml_msg_Salo_Stg%ROWTYPE;
Type Repo_Smb is table of Tbl_Tml_msg_SMB_Stg%ROWTYPE;
[code]...
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Jan 30, 2011
What is Bulk COllect and How it can be use
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Sep 28, 2011
I made two runs for bulk insertion
In first run, 16,36,897 were inserted successfully in around 38 seconds.But in second run, 54,62,952 records had to be inserted, but process failed after 708 seconds with following error :
Error report:
ORA-04030: out of process memory when trying to allocate 980248 bytes (PLS non-lib hp,DARWIN)
ORA-06512: at line 21
04030. 00000 - "out of process memory when trying to allocate %s bytes (%s,%s)"
*Cause: Operating system process private memory has been exhausted
*Action:
Here is my code snippet :
.......
FORALL i in products_tab.first .. products_tab.last
INSERT INTO tab1 VALUES products_tab(i);
COMMIT;
.........
I think that there should not have been any problem in getting it completed successfully.
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Sep 2, 2011
I have a driver table from which I need to update another table while, at the same time, record the fact that I have processed each record on the driver table.
The driver table will contain around 3.5 million records, therefore I intended to handle this using some bulk collections, with a LIMIT option so that I don't hit any memory problems.
I would also prefer to commit in batches, or at least handle exceptions using the SAVE EXCEPTION clause. The problem is I seem to be running into an error when trying to make the update to the driver table (the commented out code). With this in, I get the error:
ORA-01410: invalid ROWID
ORA-06512: at "CUST_MAIL_UPDATE", line 217
ORA-06512: at line 38
Can the CURRENT OF not work with the FORALL? What is my best approach here? If I use a FOR LOOP I lose my SAVE EXCEPTIONS exception handling.
The Procedure is as follows:
-- declare some object structures to hold the retrieved data
TYPE driver_rec IS RECORD (
account_no ext_driver.account_no%TYPE,
update_action ext_driver.update_action%TYPE,
customers_rowid ext_driver.customers_rowid%TYPE);
TYPE driver_recs_tt IS TABLE OF driver_rec;
-- cursor to get the records from the driver table
[code].......
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May 11, 2011
Is it possible to Bulk Upload file into Oracle table's BLOB column using Pl/Sql code.
The process I know of dose 1 file @ a time as of now.
I have more than 10000+ files to upload and this will be one off process.
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Dec 14, 2012
We have requirement to create INSERT SCRIPT from the table having thousands of records and load that into flat file. if there are any better option other than using UTL_FILE package which process record by record.
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