Deleting rows from a table matching values from an ascii file

Hi All,
I have an ASCII file with 12,000 lines. Each line represents a value (you may call this as bad data) that matches a database column value in table. I have to delete all the rows from a database table (~ 400,000 rows) where a column value matches the bad data value. Linux is the OS is where SQLPLUS client is installed and I can execure any SQL queries from this Linux server. Oracle DB server is 10g.
Any input on how to do this will be helpfull to me. I am not a database programmer so if any details will be appreciated.
Thanks

Hi,
That's going to be very slow (among other problems) if you don't have the bad data in a table. An index-organized table would probably be best.
Assuming the data data are uinique strings, up to 30 characters long, and that you don't need any other columns, you can create a table like this:
CREATE TABLE bad_data
(   bad_txt    VARCHAR (30)
, CONSTRAINT bad_data_pk PRIMARY KEY (bad_txt)
) ORGANIZATION INDEX;SQL*Loader is one way of getting the data from the file (doesn't have to be on the database server; it can be on your client machine) into the table.
Once you have a table, actually removing the rows from the big table might be as simple as:
DELETE big_table
WHERE   column_a IN
        (   SELECT bad_txt
            FROM    bad_data
;

Similar Messages

Id from one table showing value from another

I have an article id (rs_comments.id_com) but I would like it
to take this data and collect the value from another table.
I have joined the two tables with:
SELECT * FROM blg_comment_com INNER JOIN blg_article ON
idart_com=id_art
WHERE valid_com=1
ORDER BY date_com DESC
rs_comments.idart_com needs to be equal to rs_comments.id_art
displaying the value from rs_comments.title_art
How would I go about doing this. There only seems to be an
option in DW to do this with a dynamic list/menu but I just want to
display the text without option to change it.
Any help much appreciated.

i was stupid. The answer was staring me in the face. No
wonder no-one bothered to reply...

From two given tables, how do you fetch the values from two columns using values from one column(get values from col.A if col.A is not null and get values from col.B if col.A is null)?

From two given tables, how do you fetch the values from two columns using values from one column(get values from col.A if col.A is not null and get values from col.B if col.A is null)?

Hi,
Use NVL or COALESCE:
NVL (col_a, col_b)
Returns col_a if col_a is not NULL; otherwise, it returns col_b.
Col_a and col_b must have similar (if not identical) datatypes; for example, if col_a is a DATE, then col_b can be another DATE or it can be a TIMESTAMP, but it can't be a VARCHAR2.
For more about NVL and COALESCE, see the SQL Language manual: http://docs.oracle.com/cd/E11882_01/server.112/e26088/functions119.htm#sthref1310
I hope this answers your question.
If not, post a little sample data (CREATE TABLE and INSERT statements, relevant columns only) for all tables involved, and also post the results you want from that data.
Explain, using specific examples, how you get those results from that data.
Always say which version of Oracle you're using (e.g., 11.2.0.2.0).
See the forum FAQ: https://forums.oracle.com/message/9362002

Read data from ODS table using value mapping

hi all;
can anyone help on how to read data from ODS table using value mapping

Mudit,
Take a look at this blog,
<a href="/people/siva.maranani/blog/2005/08/23/lookup146s-in-xi-made-simpler">DB Lookup in Mapping</a>
Regards,
Bhavesh

What is the keyboard shortcut for "delete row" in a table?

What is the keyboard shortcut for "delete row" in a table within a pages document?

Click on the row number to select the entire row. Right-click, and select Delete Row from the menu. There is no keyboard shortcut.

How could I insert the deleted row into another table within a trigger?

Hi,
How could I insert the deleted row into another table within a trigger? The destination table has the same columns as the source table. Since the statements are in the trigger, it is not allowed to query the source table named 'test'. Thanks! The trigger is as follows, uncompleted:
CREATE TRIGGER delete_trigger
AFTER DELETE
ON test
FOR EACH ROW
BEGIN
-- How could I insert the deleted row into another table
END delete_trigger;
Message was edited by:
user569548

Hi,
I'm not sure what's wrong there.
I read the oracle docs about ANALYZE and ALL_TAB_COLUMNS, and did the following:
ANALYZE TABLE my_tab VALIDATE STRUCTURE; //went ok.
SELECT column_name
FROM all_tab_columns
WHERE table_name = 'my_tab'; //but no rows selected?
This topic might not be what this thread should be about. Here I posted a new thread:
How to get colum names of the newly created table?
Thanks.
Message was edited by:
user569548

How get all record from master and matching record from detail

hi master
sir i have master detail table
i have many record in master table but some record in detail table how i get
all record from master and matching record from detail
such as
select m.accid,m.title,d.dr,d.cr from master m, detail d where m.accid=d.accid
this query not work that get only related record i need all record from master
please give me idea
thanking you
aamir

hi master
sir i have master detail table
i have many record in master table but some record in
detail table how i get
all record from master and matching record from
detail
such as
select m.accid,m.title,d.dr,d.cr from master m,
detail d where m.accid=d.accid
this query not work that get only related record i
need all record from master
please give me idea
thanking you
aamir
select m.accid,m.title,d.dr,d.cr
from master m, detail d
where m.accid=d.accid (+)The outer join operator (+) will get you all the details from master and any details from the detail if they exist, but the master details will still be got even if there are not details.
Note: Oracle 10g now supports ANSI standard outer joins as in:
select m.accid,m.title,d.dr,d.cr
from master m LEFT OUTER JOIN detail d on m.accid=d.accid

Insert row and delete row in a table control

Hi Experts,
I am using a table control in module pool programming, How can I Insert row and delete row in a table control?
Thanks in Advance....

Santhosh,
Iam using this code..
FORM fcode_delete_row
              USING    p_tc_name           TYPE dynfnam
                       p_table_name
                       p_mark_name   .
-BEGIN OF LOCAL DATA----
DATA l_table_name       LIKE feld-name.
data: p_mark_name type c.
FIELD-SYMBOLS <tc>         TYPE cxtab_control.
FIELD-SYMBOLS <table>      TYPE STANDARD TABLE.
FIELD-SYMBOLS <wa>.
FIELD-SYMBOLS <mark_field>.
-END OF LOCAL DATA----
ASSIGN (p_tc_name) TO <tc>.
get the table, which belongs to the tc                               *
CONCATENATE p_table_name '[]' INTO l_table_name. "table body
ASSIGN (l_table_name) TO <table>.                "not headerline
delete marked lines                                                  *
DESCRIBE TABLE <table> LINES <tc>-lines.
LOOP AT <table> ASSIGNING <wa>.
access to the component 'FLAG' of the table header                 *
    ASSIGN COMPONENT p_mark_name OF STRUCTURE <wa> TO <mark_field>.
if <MARK_FIELD> = 'X'.
    PERFORM f_save_confirmation_9101.
    IF gv_answer EQ '1'.
      DELETE <table> INDEX syst-tabix.
      IF sy-subrc = 0.
        <tc>-lines = <tc>-lines - 1.
      ENDIF.
      ELSE.
      ENDIF.
    ENDIF.
ENDLOOP.
in this code   ASSIGN COMPONENT p_mark_name OF STRUCTURE <wa> TO <mark_field>.
if <MARK_FIELD> = 'X'.
this code is not working...

How stop PS6 from removing the DPI value from an image when using "save for the web"?

How stop PS6 from removing the DPI-value from an image when using "save for the web"?
Example:
- Open a tif image, that contains a dpi value (resolution).
- Use the splice tool in PS6.
- Export the slices with "Save for web", as gif-files.
Then the dpi value is removed, the gif files has no dpi value (it's empty).
How can we stop PS6 from removing the dpi value when using "save for web"?
OR:
When using the slice tool, how can we save the sliced pieces without PS removing the dpi value?

you can make your art go a little bit over the bounds. or you can make sure your artboart and art edges align to pixels

Delete row in database table

Hi!
Is there a way to delete row in database table by telling the number of the row?
Thanx!

Oh, sorry I didn't properly read your post.
Try out what rvflannery suggests.
But, for reference, you should always delete a row by it's unique ID.
Don't go deleting things, by their position on a table, because a rows position can change.
V

Reg:How to delete the column in table control also from database table.

Hi Experts,
Once again thank u all for giving the responses.
one more doubt is how to delete the columns of table control and also the record shold delete from ztable.
With Regards,
Saroja.P.

Hi,
If you want to delete the rows in the table control and simultaneously delete it from the database table, then you can implement a 'DELETE' functionality specific to your table control. Have a MARK field (you will find that in the screen attributes of the table control -> give a name for the MARK field, you will find an additional MARK column at the beginning of your table control). You can check whatever rows you want to delete from the table control, call the delete module.
"This portion of code inside the LOOP...ENDLOOP.
IF sy-ucomm eq 'F_DELETE'.
gt_itab2-check = mark. " Store the MARK field status into your internal table's correspoding field 'check'
MODIFY gt_itab INDEX tabcontrol-current_line.
ENDIF.
iF sy-ucomm eq 'DELETE1'.
DELETE gt_itab WHERE check eq 'X'. "Your internal table does not have rows that you want to delete
ENDIF.
Now you can modify your database table using the MODIFY statement.
MODIFY ZDB FROM TABLE gt_itab.

INSERT of two records into different tables (pk value from first to second)

Hi there!
Have probably stupid question
Need to insert one record into table with primary key and then insert into other table record with value of primary key field from first record
How can I do it?
Thanks a lot!!!

You have several possibilities. Most easiest one is listed first :)
SQL> create table a (a number);
Table created.
SQL> alter table a add constraint a_pk primary key (a);
Table altered.
SQL> create table b (a number);
Table created.
SQL> alter table b add constraint b_a_fk foreign key (a) references a(a);
Table altered.
SQL> insert into a values (0);
1 row created.
SQL> insert into b values (0);
1 row created.Though that may not help always, so the next possibility maybe just using sequence with nextval and currval (currval can be used only in the same session and only after you have issued at least one nextval)
SQL> create sequence a_seq;
Sequence created.
SQL> insert into a values (a_seq.nextval);
1 row created.
SQL> insert into b values (a_seq.currval);
1 row created.And you can use also famous returning clause. It is a bit easier to show that in the pl/sql block than pure SQL.
SQL> declare
2   v number;
3 begin
4   insert into a values (a_seq.nextval) returning a into v;
5   insert into b values (v);
6 end;
7 /
PL/SQL procedure successfully completed.And at last contents of the tables :)
SQL> select * from b;
         A
         0
         1
         2
SQL> select * from a;
         A
         0
         1
         2Gints Plivna
http://www.gplivna.eu

How to Populate table using values from a muti-select list

I have a muti-select list in a page, the user can select some of the values from the muti-select list. How to populate a table in a process using the selected values.
Thanks.
XP

XP,
you can also have a look at the following thread.
Re: Shuttle Control In APEX 3
Patrick
My APEX Blog: http://inside-apex.blogspot.com
The ApexLib Framework: http://apexlib.sourceforge.net
The APEX Builder Plugin: http://sourceforge.net/projects/apexplugin/

Count rows in a table being retrieved from dba_segments

Hello guys,
I was wondering how can I count the rows in a table that is being retrieved from dba_segments.
-- I am getting the table name from dba_segment
-- Is it possible to count the number of rows in that table at the same time?
-- If not, is there an alternative step without analyzing the table or schema, then getting the result from num_rows in all_tables?
I want the count code to add to the select statement..
SELECT owner, segment_name , segment_type, partition_name, bytes
FROM   dba_segments
WHERE owner = UPPER( v_schema )
ORDER BY segment_name;I try to add this to the select statement. count(segment_name), but that did not work.
Any direction(s)?

SYS@DEMO102> show user
USER is "SYS"
SYS@DEMO102> l
1 declare
2 counter number;
3 begin
4 for x in (select segment_name, owner
5            from dba_segments
6            where segment_type='TABLE'
7            and owner='SCOTT') loop
8 execute immediate 'select count(*) from '||x.owner||'.'||x.segment_name into counter;
9 dbms_output.put_line(rpad(x.owner,30,' ')
10                       ||'.'
11                       ||rpad(x.segment_name,30,' ')
12                       ||' : '
13                       || counter
14                       ||' row(s)');
15 end loop;
16* end;
SYS@DEMO102> /
SCOTT                         .MYTABLE14                      : 0 row(s)
SCOTT                         .TAB3                           : 1 row(s)
SCOTT                         .TAB4                           : 4 row(s)
SCOTT                         .THE_TABLE                      : 5 row(s)
SCOTT                         .C                              : 0 row(s)Nicolas.

How to UPDATE multiple rows in T1 with unique value from T2

Hi,
having on mind update query with where clause:
WHERE (SELECT LEFT(ColumnName,7) FROM tblName) = emp2.ColumnName
error:
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.
The statement has been terminated.
What am I suppose to change in WHERE clause....
Note: there is always unique value in T2 while, in T1, there could be both, only one value to be updated or number of them that all need to be updated with that unique value from T2 (alias emp2)
T1
T2
colimn1          column2               column3        column4
001A001A       string1                001A001       string10
001A001B        string2                001A005      string20
001B005A        string3
001B005B        string4
001B005C    string5
should become:
T1
colimn1          column2
001A001A       string10
001A001B        string10
001B005A        string20
001B005B        string20
001B005C    string20
UPDATET1
SET column2 = emp2.column4
FROM T2 as emp2
    WHERE (SELECT LEFT(column1,7) FROM T1 = emp2.column3

Hi daredevil3011,
Based on my test, the error is caused by where statement in the query. Just as the error message, in your where statement, there is a subquery “SELECT LEFT(ColumnName,7) FROM tblName” follows ”=”, this is not permitted in SQL Server.
To fix this issue, please modify your query to like below:
UPDATE T1
SET column2 = emp2.column4
FROM T2 as emp2
WHERE LEFT(column1,7) = emp2.column3
Reference:
WHERE (Transact-SQL)
If there are any other questions, please feel free to ask.
Thanks,
Katherine Xiong
Katherine Xiong
TechNet Community Support

Deleting rows from a table matching values from an ascii file

Similar Messages

Maybe you are looking for