a table with 1200 coulumns or 30 tables with fewer columns

Is there any show shot in a table with columns of 1200 by report to separate columns in the 30 tables by certain categories of business?
Queries will always require a subset of the columns of 1200 across all categories of 30 companies.

a. you may not have a table with more then 1000 columns:
http://download.Oracle.com/docs/CD/E11882_01/server.112/e10820/limits003.htm#i288032

b. After 255 columns, the line will be chained between two (or more) data blocks,

So yes, this will impact your performance:
http://download.Oracle.com/docs/CD/E11882_01/server.112/e10713/logical.htm#CNCPT1055

c. you might want to consider grouping table 30:
http://download.Oracle.com/docs/CD/E11882_01/server.112/e10713/tablecls.htm#i25478

Amiel Davis

Tags: Database

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imorting data in tables with fewer columns
Hello guys,.

our version of the database is 11R1...
Operating system is Windows 2008 Server
The customer database is on a separate box.
I want to import data from client machine table in our database via impdp.

but the question is...

in our database there are tables whose columns are less than the number of columns in the tables of the database of customer...

for example, in the customer database if an emp table has columns a, b, c, d, and then in our database, the emp table is to have the columns a, b, c...

is there anyway to mport all data in 3 columns (a, b, c) of table emp in our database. ??

Thank you very much
Dear OP,

You can write a procedure like that...
(SAMPLE) - you can also change this option to meet your needs...

DECLARE
cursor rc_name is select column_name, column_id from all_tab_cols where table_name = 'EMP ';
col_list varchar2 (2000): = ";

BEGIN

FOR rec_col in rc_name
LOOP
col_list: = col_list | ' , ' || rec_col.column_name;
END LOOP;
col_list: = substr (col_list, instr (col_list, ',', 1, 1) + 1);
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Hello

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```
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See you soon,.

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Why can't I create a table or a column whose name begins with a number? I can't seem to find an answer when I Googled it.
Thank you
Yoann

Hello

jimmy437 wrote:

Why can't I create a table or a column whose name begins with a number? I can't seem to find an answer when I Googled it.

Thank you

Yoann

You can; Simply enclose it quotation marks name whenever you use it.

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(
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Hello

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Parallel execution of the following DML operations on tables with LOB columns is supported. These operations performed in parallel run only mode when it is run on a partitioned table. The DML statements on tables not partitioned with LOB columns continue to run in serial execution mode.

INSERT SELECT AS

CREATE TABLE AS SELECT

DELETE

UPDATE

MERGE (conditionally UPDATE and INSERT)

Multi-table INSERT

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Table created.

Then, I tried to see the execution of a parallel ABOLITION plan:

SQL> EXPLAIN PLAN FOR
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Explained.

SQL> select * from table(dbms_xplan.display);

PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Plan hash value: 3718066193

-------------------------------------------------------------------------------------------------------
| Id  | Operation             | Name     | Rows  | Cost (%CPU)| Time     |    TQ  |IN-OUT| PQ Distrib |
-------------------------------------------------------------------------------------------------------
|   0 | DELETE STATEMENT      |          |  2048 |     2   (0)| 00:00:01 |        |      |            |
|   1 |  DELETE               | T1       |       |            |          |        |      |            |
|   2 |   PX COORDINATOR      |          |       |            |          |        |      |            |
|   3 |    PX SEND QC (RANDOM)| :TQ10000 |  2048 |     2   (0)| 00:00:01 |  Q1,00 | P->S | QC (RAND)  |
|   4 |     PX BLOCK ITERATOR |          |  2048 |     2   (0)| 00:00:01 |  Q1,00 | PCWC |            |
|   5 |      TABLE ACCESS FULL| T1       |  2048 |     2   (0)| 00:00:01 |  Q1,00 | PCWP |            |

PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------

Note
-----
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And I ended up executing the statement.

SQL> commit;
Commit complete.

SQL> alter session enable parallel dml;
Session altered.

SQL> delete /*+parallel (t1,8) */ from t1;
2048 rows deleted.

As we can see, the statement was executed in parallel:

SQL> select * from v$pq_sesstat;

STATISTIC                      LAST_QUERY SESSION_TOTAL
------------------------------ ---------- -------------
Queries Parallelized                    1             1
DML Parallelized                        0             0
DDL Parallelized                        0             0
DFO Trees                               1             1
Server Threads                          5             0
Allocation Height                       5             0
Allocation Width                        1             0
Local Msgs Sent                        55            55
Distr Msgs Sent                         0             0
Local Msgs Recv'd                      55            55
Distr Msgs Recv'd                       0             0

11 rows selected.

Is this normal? It is not supposed to be supported on Oracle 11 g with no partitioned table containing the LOB column...

Thank you for your help.

Michael

Hello

The explain plan shows that only the query is run in parallel but not delete it.

Concerning

Maurice

Update a table with one column of another

Oracle 11g
Hello
i'im trying to update the two columns of table SUPPORT (SUPPORT_X, SUPPORT_Y) with two columns of table POST_HTA_BT (POSTHTABT_GPS_X, POSTHTABT_GPS_Y)
Understand that the two tables have the colum below:
SUPPORT (SUPPORT_ID, SUPPORT_PLAQUE, POSTHTABT_ID, SUPPORT_X, SUPPORT_Y,...)
POST_HTA_BT (POSTHTABT_ID, POSTHTABT_GPS_X, POSTHTABT_GPS_Y,...)
The SUPPORT_PLAQUE has type varachar. Except the keys, the other columns are varchar type in both tables.
The point here is to update the support_x, support_y with posthtabt_gps_x and posthtabt_gps_y.But before the update we have Sheik if the fifth number of the support plate is a number of characters from "0" to "9"and the rest of the caracter of the support_plaque is '00000'
Please note that the support_plaque is stored in the table with the form: "0025800000!"
So I did the below script, I try to execute in sql develop.
SET SERVEROUTPUT ON
DECLARE
chiffre_liste varchar (200): = '0 ', '1', '2', '3', '4', ' 5 ', ' 6' ', 7', ' 8 ', ' 9';
CURSOR CUR_GPS_SUPPORT IS
Select MEDIA. SUPPORT_X, SUPPORT. SUPPORT_Y, POSTE_HTA_BT. POSTHTABT_ID, SUPPORT. EXPL_ID,
SUPPORTED. SUPPORT_PLAQUE, POSTHTABT_GPS_X, POSTHTABT_GPS_Y
support,.
POSTE_HTA_BT
where
SUPPORTED. SUPPORT_X IS NULL and
SUPPORTED. SUPPORT_Y IS NULL and
SUPPORTED. POSTHTABT_ID = POSTE_HTA_BT. POSTHTABT_ID and
SUPPORTED. EXPL_ID = POSTE_HTA_BT. EXPL_ID
Order of SUPPORT. POSTHTABT_ID;
w_POSTHTABT_ID POSTE_HTA_BT. Type of POSTHTABT_ID %;
w_SUPPORT_X SUPPORT. TYPE % SUPPORT_X;
w_SUPPORT_Y SUPPORT. TYPE % SUPPORT_Y;
w_EXPL_ID SUPPORT. TYPE % EXPL_ID;
w_SUPPORT_PLAQUE SUPPORT. TYPE % SUPPORT_PLAQUE;
w_POSTHTABT_GPS_X POSTE_HTA_BT. TYPE % POSTHTABT_GPS_X;
w_POSTHTABT_GPS_Y POSTE_HTA_BT. TYPE % POSTHTABT_GPS_Y;
BEGIN
DBMS_OUTPUT. Put_line ('loading the coordoonnees GPS - GPS Coord update takes care of starting ');
FOR HEART LOOPING CUR_GPS_SUPPORT
w_POSTHTABT_ID: = cur. POSTHTABT_ID;
w_SUPPORT_PLAQUE: = cur. SUPPORT_PLAQUE;
w_SUPPORT_X: = cur. SUPPORT_X;
w_SUPPORT_Y: = cur. SUPPORT_Y;
w_POSTHTABT_GPS_X: = cur. POSTHTABT_GPS_X;
w_POSTHTABT_GPS_Y: = cur. POSTHTABT_GPS_X;
If substr (cur.support_plaque, 5, 1 chiffre_liste) and substr (cur.support_plaque, 6, 5) = '00000'
w_SUPPORT_X: = CUR. POSTHTABT_GPS_X
w_SUPPORT_Y: = CUR. POSTHTABT_GPS_Y
END if;
EXCEPTION WHEN NO_DATA_FOUND THEN w_SUPPORT_X: = NULL and w_SUPPORT_Y: = NULL;
END;
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Update SUPPORT
Set SUPPORT_X = w_SUPPORT_X,
SUPPORT_Y = w_SUPPORT_Y
where SUPPORT_PLAQUE = w_SUPPORT_PLAQUE;
-On valid imm? immediately
commit;
EXCEPTION when no_data_found then null;
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END;

END;
/
and I got the following errors:
Error report:
ORA-06550: line 2, colum 34:
PLS-00103: symbol ',' met instead of one of the following symbols:
* & = - + ; <>/ is mod remains not rem
<>< Hurst (*) > or! = or ~ = > = < = <>and like2 or
like4 likec between | submultiset of type multiset Member
ORA-06550: line 2, column 52:
PLS-00103: symbol ';' met instead of one of the following symbols:
), * & = - + <>/ is mod remains not rem = >
<>< Hurst (*) > or! = or ~ = > = < = <>and like2 or
like4 likec between | Member of multiset must
ORA-06550: line 38, colum 48:
PLS-00103: symbol 'CHIFFRE_LISTE' met instead of one of the following symbols:
(
Symbol "(" a été substitué à "CHIFFRE_LISTE" verser continuer.) "
ORA-06550: line 39, 12 colum:
PLS-00103: symbol 'W_SUPPORT_X' met instead of one of the following symbols:
), * & -+ / at rem mod < Hurst (*) > rest and or.
multiset
ORA-06550: line 40, 12 colum:
PLS-00103: symbol 'W_SUPPORT_Y' met instead of one of the following symbols:
. (), * @ % & = - + <>/ is mod remains not rem
<>< Hurst (*) > or! = or ~ = > = < = <>and like2 or
like4 likec between | mult
ORA-06550: line 41, colum 9:
PLS-00103: symbol 'END' met instead of one of the following symbols:
. (), * @ % & = - + <>/ is mod remains not rem
<>< Hurst (*) > or! = or ~ = > = < = <>and like2 or
like4 likec between | multiset members
06550 00000 - "line %s, column % s:\n%s".
* Cause: Usually a PL/SQL compilation error.
* Action:
I checked the line number, but do not see the error in my code.
Please could you help me?
peace

Hello

glad to know that it worked. In fact, I don't see the reason to make these complicated processes.

Remember the mantra:
- If you can do it with SQL then do it with SQL
Good evening!

Alberto

Declare a type of table with multiple columns
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My type is:
create or replace type "NUMBER_TABLE" in the table of the number;

And I use it in function:

FUNCTION GetValues()
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as
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I want select it be like this:
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How to do this?
Is that what you are looking for:
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CREATE OR REPLACE TYPE two_col_table AS TABLE OF two_col;
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Hello

user13024762 wrote:
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etc. with more tables

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Published by: Toolman21 on December 2, 2010 14:17
_ to correct spacing added.
Hello
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case
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case
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While talking with a friend, he told me that sometimes he uses tables with 300 columns that will be available only once for the extraction of information. For me, it's a little strange because 300 columns looks like a large number of columns for me...

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Concerning
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