Max no columns allowed in a table

i want to know how many columns are allowed in a table.maximum no of columns in table.

I hope this will be helpful for query
ORA-01792: maximum number of columns in a table or view is 1000
Cause: An attempt was made to create a table or view with more than 1000 columns, or to add more columns to a table or view which pushes it over the maximum allowable limit of 1000. Note that unused columns in the table are counted toward the 1000 column limit.
Action: If the error is a result of a CREATE command, then reduce the number of columns in the command and resubmit. If the error is a result of an ALTER TABLE command, then there are two options: 1) If the table contained unused columns, remove them by executing ALTER TABLE DROP UNUSED COLUMNS before adding new columns; 2) Reduce the number of columns in the command and resubmit.

Similar Messages

Maximum number of columns allowed in a table (in oracle 9i)

Maximum number of columns allowed in a table (in oracle 9i)

Assuming you are referring to 9iR2,
http://download.oracle.com/docs/cd/B10501_01/server.920/a96536/ch44.htm#288033

Planning Layout KP75 - Max 30 columns allowed in the layout

Hi,
I am trying to create a Planning layout(Excel Upload for KP26) in Transaction Code KP75.
But when i am trying to create the columns, it is giving the error message that "Max of 30 column are allowed in the planning layout".
But my requriement is to have around 40 columns.
So is there any way that we can extend the max columns allows to 40.
Regards,
Shree.

What kind of planning you are doing in 40 columns? Can you please elaborate.

What is the maximum number of columns allowed on a table?

What is the maximum number of columns that a table can have? I have a research team that wants to have 140,000 columns on one table and 2000 rows.
What would be the best way to input (SQL*Loader?) that data on this table and retrieve data from this table? The highest number of columns that I have implemented on a table was 500.
Any feedback would be greatly appreciated.
Thanks. ;-)

Holy cow 140,000 columns and 2000 rows!! I think you are going to have to tell someone to come up with a better design because that doesn't sound like a relational table. Besides, I found this in the Oracle 8.1.7 Reference Manual:
"The absolute maximum number of columns in a table is 1000. However, when you create an object table (or a relational table with columns of object, nested table, varray, or REF type), Oracle maps the columns of the user-defined types to relational columns, creating in effect "hidden columns" that count toward the 1000-column limit. For details on how Oracle calculates the total number of columns in such a table, please refer to Oracle8i Administrator's Guide."

Characters not allowed in column names in Siebel table

Hello,
I am trying to find out the characters or symbols which are not allowed to be a part of column names in Siebel tables. For instance, I checked and found out ( and ) along with all numbers and alphabets are allowed to be part of column name of tables in Siebel. I am looking for some character or character sequence which are not allowed to be used as part of column names.
Regards

Why do you need to know?
Here you can read something for Oracle: http://docs.oracle.com/cd/B19306_01/server.102/b14200/sql_elements008.htm

Max No of Columns allowed in MAXDB 7.5.00.18

Hello,
How many Maximum No of Columns are allowed for a Table in MaxDB.And also tell me how many bytes a float,double,small int etc takes in MaxDb.
I have seen in help of MaxDB that a table allows 1024 columns including primary key.But the Internal length of a table row is 8088 bytes.But a Long varchar allows 2GB.i don't understand Long Varchar
Size is Greater than Internal length of a table row.Can anyone explain this.
Thanks in Advance,
Venkat

Hi,
in addition to the explanation from Elke, you may want to have a look into a more general description on the topic "data storage in MaxDB".
I recommend you check the documentation and/or the freely available MaxDB Internals Course material:
[http://maxdb.sap.com/training/]
The link
[No-Reorganization Principle; Data Storage Without I/O Bottlenecks|http://maxdb.sap.com/training/internals_7.6/reorgfree_EN_76.pdf]
points to a quite complete description of how MaxDB stores data.
Best regards,
Lars

Maximum Number of Columns Allowed in OBIEE Answers Table View?

Was wondering if anyone knew the maximum number of columns allowed in OBIEE Answers Table View? I could not find it in documentation.
Thanks in advance

Hi,
You can increase the maximum columns in a view by add some tags to instanceconfig.xml file.
check this...http://obiee101.blogspot.com/2008/02/obiee-controling-pivot-view-behavior.html
Regards,
Srikanth
Edited by: Srikanth Mandadi on Oct 15, 2010 10:04 AM

How to select even the column names of a table?

Hello All,
Is there a way to select even the column names of a table in the select statement?
My select from a table (say X) is in a SQL* Plus script that gets invoked by application tier and displays data in the application tier window. User's can then copy the data into a spreadsheet and do their processing. However, I need to give them the column names too along with the data.
Thanks,
Chiru

If there is a middle tier that is selecting and
displaying the data, and that's what the users are
copying from, the middle tier would have to address
its presentation of the data to allow users to
include column names. If this is a common task, the
application should probably be modified to give users
the option of downloading the data in a spreadsheet
directly rather than forcing them to copy and paste
data.Thanks for the reply.
The users don't have to copy paste. The application tier has an options in the "Tools" menu item which allows them to copy the entire output to a file (in my case a txt file which is a pipe delimited). Then they have to do text to columns to get the data into each column of the spreadsheet. I could have directly called the stored procedures from the application tier and created ".csv" files and FTP'd them to the user's folders. However, I am having to go this round about because, I am not getting enough support from the LAN team in FTP'ing etc.
OK I'll think of another workaround.
Thanks,
Chiru

[Forum FAQ] How to configure a Data Driven Subscription which get multi-value parameters from one column of a database table?

Introduction
In SQL Server Reporting Services, we can define a mapping between the fields that are returned in the query to specific delivery options and to report parameters in a data-driven subscription.
For a report with a parameter (such as YEAR) that allow multiple values, when creating a data-driven subscription, how can we pass a record like below to show correct data (data for year 2012, 2013 and 2014).
EmailAddress                             Parameter
Comment
[email protected]              2012,2013,2014               NULL
In this article, I will demonstrate how to configure a Data Driven Subscription which get multi-value parameters from one column of a database table
Workaround
Generally, if we pass the “Parameter” column to report directly in the step 5 when creating data-driven subscription.
The value “2012,2013,2014” will be regarded as a single value, Reporting Services will use “2012,2013,2014” to filter data. However, there are no any records that YEAR filed equal to “2012,2013,2014”, and we will get an error when the subscription executed
on the log. (C:\Program Files\Microsoft SQL Server\MSRS10_50.MSSQLSERVER\Reporting Services\LogFiles)
Microsoft.ReportingServices.Diagnostics.Utilities.InvalidReportParameterException: Default value or value provided for the report parameter 'Name' is not a valid value.
This means that there is no such a value on parameter’s available value list, this is an invalid parameter value. If we change the parameter records like below.
EmailAddress                        Parameter             Comment
[email protected]         2012                    NULL
[email protected]         2013                     NULL
[email protected]         2014                     NULL
In this case, Reporting Services will generate 3 reports for one data-driven subscription. Each report for only one year which cannot fit the requirement obviously.
Currently, there is no a solution to solve this issue. The workaround for it is that create two report, one is used for view report for end users, another one is used for create data-driven subscription.
On the report that used create data-driven subscription, uncheck “Allow multiple values” option for the parameter, do not specify and available values and default values for this parameter. Then change the Filter
From
Expression:[ParameterName]
Operator   :In
Value         :[@ParameterName]
To
Expression:[ParameterName]
Operator   :In
Value         :Split(Parameters!ParameterName.Value,",")
In this case, we can specify a value like "2012,2013,2014" from database to the data-driven subscription.
Applies to
Microsoft SQL Server 2005
Microsoft SQL Server 2008
Microsoft SQL Server 2008 R2
Microsoft SQL Server 2012
Please click to vote if the post helps you. This can be beneficial to other community members reading the thread.

For every Auftrag, there are multiple Position entries.
Rest of the blocks don't seems to have any relation.
So you can check this code to see how internal table lt_str is built whose first 3 fields have data contained in Auftrag, and next 3 fields have Position data. The structure is flat, assuming that every Position record is related to preceding Auftrag.
Try out this snippet.
DATA lt_data TYPE TABLE OF string.
DATA lv_data TYPE string.
CALL METHOD cl_gui_frontend_services=>gui_upload
EXPORTING
    filename = 'C:\temp\test.txt'
CHANGING
    data_tab = lt_data
EXCEPTIONS
    OTHERS   = 19.
CHECK sy-subrc EQ 0.
TYPES:
BEGIN OF ty_str,
a1 TYPE string,
a2 TYPE string,
a3 TYPE string,
p1 TYPE string,
p2 TYPE string,
p3 TYPE string,
END OF ty_str.
DATA: lt_str TYPE TABLE OF ty_str,
      ls_str TYPE ty_str,
      lv_block TYPE string,
      lv_flag TYPE boolean.
LOOP AT lt_data INTO lv_data.
CASE lv_data.
    WHEN '[Version]' OR '[StdSatz]' OR '[Arbeitstag]' OR '[Pecunia]'
         OR '[Mita]' OR '[Kunde]' OR '[Auftrag]' OR '[Position]'.
      lv_block = lv_data.
      lv_flag = abap_false.
    WHEN OTHERS.
      lv_flag = abap_true.
ENDCASE.
CHECK lv_flag EQ abap_true.
CASE lv_block.
    WHEN '[Auftrag]'.
      SPLIT lv_data AT ';' INTO ls_str-a1 ls_str-a2 ls_str-a3.
    WHEN '[Position]'.
      SPLIT lv_data AT ';' INTO ls_str-p1 ls_str-p2 ls_str-p3.
      APPEND ls_str TO lt_str.
ENDCASE.
ENDLOOP.

How can I add a new column in compress partition table.

I have a compress partition table when I add a new column in that table it give me an error "ORA-22856: CANNOT ADD COLUMNS TO OBJECT TABLES". I had cretaed a table in this clause. How can I add a new column in compress partition table.
CREATE TABLE Employee
Empno Number,
Tr_Date Date
COMPRESS PARTITION BY RANGE (Tr_Date)
PARTITION FIRST Values LESS THAN (To_Date('01-JUL-2006','DD-MON-YYYY')),
PARTITION JUNK Values LESS THAN (MAXVALUE));
Note :
When I create table with this clause it will allow me to add a column.
CREATE TABLE Employee
Empno Number,
Tr_Date Date
PARTITION BY RANGE (Tr_Date)
PARTITION FIRST Values LESS THAN (To_Date('01-JUL-2006','DD-MON-YYYY')),
PARTITION JUNK Values LESS THAN (MAXVALUE));
But for this I have to drop and recreate the table and I dont want this becaue my table is in online state i cannot take a risk. Please give me best solution.

Hi Fahed,
I guess, you are using Oracle 9i Database Release 9.2.0.2 and the Table which you need to alter is in OLTP environment where data is usually inserted using regular inserts. As a result, these tables generally do not get much benefit from using table compression. Table compression works best on read-only tables that are loaded once but read many times. Tables used in data warehousing applications, for example, are great candidates for table compression.
Reference : http://www.oracle.com/technology/oramag/oracle/04-mar/o24tech_data.html
Topic : When to Use Table Compression
Bug
Reference : http://dba.ipbhost.com/lofiversion/index.php/t147.html
BUG:<2421054>
Affects: RDBMS (9-A0)
NB: FIXED
Abstract: ENH: Allow ALTER TABLE to ADD/DROP columns for tables using COMPRESS feature
Details:
This is an enhancement to allow "ALTER TABLE" to ADD/DROP
columns for tables using the COMPRESS feature.
In 9i errors are reported for ADD/DROP but the text may
be misleading:
eg:
ADD column fails with "ORA-22856: cannot add columns to object tables"
DROP column fails with "ORA-12996: cannot drop system-generated virtual column"
Note that a table which was previously marked as compress which has
now been altered to NOCOMPRESS also signals such errors as the
underlying table could still contain COMPRESS format datablocks.
As of 10i ADD/SET UNUSED is allowed provided the ADD has no default value.
Best Regards,
Muhammad Waseem Haroon
[email protected]

Same column name from different table

i have a sql query as like this : "SELECT * FROM TABLE1,TABLE2". i use oracle. both TABLE1 and TABLE2 have the same column named 'COLUMN1'. while i get rows how i know the value of COLUMN1 from which table (TABLE1 or TABLE2).
sample code snippet is above. do u help me!
while (rs.next())
value1 = rs.getString("COLUMN1");
// is value1's value from table1 or table2. how do i know this?
// i try value1 = rs.getString("TABLE1.COLUMN1"); but it doesn't work :(
....

I case you don't know what an alias is, it would look something like this:
SELECT a.COLUMN1 as FirstColumn1, b.COLUMN1 as SecondColumn1 FROM FirstTable a, SecondTable b
Notice that in the FROM clause we've appended a short name for each table. You're not limited to one character, but I try to keep it simple. Now we can refer to the tables as a and b.
Because I did that I have to refer to any ambiguous columns (although it's good practice to refer to ALL columns) using the table name prefix and a period. This tells the driver which "COLUMN1" I want. Then we include as AS clause which allows us to tell the driver what we want that column name to be when it's returned to us. This is specially usefule when I have two columns in two separate tables with the same name (as you have here) or if I'm calculating data (i.e. (a.QTY * b.PRICE) as UnitPrice) that doesn't have a column name, so here I can give it one.
It's a little weird at first since you use the alias names in the select before you actually define them in the FROM clause, but you'll get use to it.
Now you retrieve FirstColumn1 and SecondColumn1 from your ResultSet, not Column1.
HTH.

How do I get and set column attributes in a table or a treetable with Java?

Using 11.1.1.4.0
Hi,
How do I get and set column attributes in a table or a treetable with Java? For a simple example, say I have a table and want certain roles to see all columns (including address), and other roles can see only certain columns (no address). In a Java method, I want to test if a table's column visible attribute is true and if so, set it to false before rendering it.
Thanks in advance,
Troy

Hi,
this use case would be a perfect example for using seeded MDS customization. Instead of checking what users are allowed to see or not upon rendering time, you have a customization class and thus the framework doing this for you.
http://www.oracle.com/technetwork/developer-tools/adf/learnmore/31-mds-sample-169173.pdf
In this paper and sample, specific users see different layouts. It also contains a customization class that shows how this can leverage ADF Security
Frank

Comparing data size in one table to column widths in another table

I have data in a table that has a large number of columns, many of them nvarchar of varying widths. Im trying to take that data and insert it into another table but Im getting the warning message about string or binary data being truncated. I
suspect there is a field somewhere that is not large enough for the data. However, I run across this often enough I would like to come up with a better solution than just eyeballing the data.
I found this example
http://www.sqlservercentral.com/Forums/Topic1115499-338-2.aspx
(credit goes to poster in the linked thread above)
Select columns
into #T
from MyDataSource;
select *
from tempdb.sys.columns as TempCols
full outer join MyDb.sys.columns as RealCols
on TempCols.name = RealCols.name
and TempCols.object_id = Object_ID(N'tempdb..#T')
and RealCols.object_id = Object_ID(N'MyDb.dbo.MyTable)
where TempCols.name is null -- no match for real target name
or RealCols.name is null -- no match for temp target name
or RealCols.system_type_id != TempCols.system_type_id
or RealCols.max_length < TempCols.max_length ;
Why a full outer join ? Why not just a left join, since I really only want to see the matches on my source table?
When Im running this against the table im interested in, it doesnt seem to find matches between my target table and my temp table

As an outer join of any type, that query won't work well. For example, suppose you do a left join. So the query begins by getting every row from tempdb.sys.columns (whether it is in #T or not). Consider a row for a column which is not in
#T, you look for matches for rows in Mydb.sys.columns ON
on TempCols.name = RealCols.name
and TempCols.object_id = Object_ID(N'tempdb..#T')
and RealCols.object_id = Object_ID(N'MyDb.dbo.MyTable)
Notice that since the row you are considering is NOT a column in #T, the second part of the ON condition is not true, so the whole ON condition will not be true. But this is a left join. So the join keeps this row with NULL's in the columns coming
from the RealCols table. Then you do the where condition, but the connections are all OR and one of the conditions is RealCols.name is null (which it is because there was no match), your output will include a row for this column in tempdb even though
this column is not in #T. So if you use a left join, the output of this query will include a row for every column in every table in tempdb not named #T.
Similarly, if you do a right join, you get a column for every row of every table in MyDb which is not a column in dbo.MyTable.
And a full join (which you are doing above) will return a row for every column in every table in both tempdb and MyDb.
This query will sort of work if you make it an inner join. But even then it won't find every possible cause of string or binary truncation. For example, you are doing RealCols.max_length < TempCols.max_length. But in sys.columns, if
you have a varchar(max) column, max_length is stored as -1. So if a column in RealCols is varchar(50) and the same column in TempCols is varchar(max), that column will not show up as an exception, but of course, you can get truncation if you attempt
to store a varchar(max) in a varchar(50).
I would run a query more like
Create Table FooX(a int, b varchar(20), c int, d varchar(20), e int, f varchar(20), g decimal(4,0));
Select a, b, 1 as x, 'abc' as y, Cast('' as varchar(max)) As f, Cast(25.1 as decimal(3,1)) as g
into #T
from FooX;
Select 'In Real, not in or different in Temp' As Description, name, column_id, system_type_id, max_length, precision, scale, collation_name From sys.columns Where object_id = Object_ID(N'FooX')
Except Select 'In Real, not in or different in Temp' As Description, name, column_id, system_type_id, max_length, precision, scale, collation_name From tempdb.sys.columns Where object_id = Object_ID(N'tempdb..#T')
Union All
Select 'In Temp, not in or different in Real' As Description, name, column_id, system_type_id, max_length, precision, scale, collation_name From tempdb.sys.columns Where object_id = Object_ID(N'tempdb..#T')
Except Select 'In Temp, not in or different in Real' As Description, name, column_id, system_type_id, max_length, precision, scale, collation_name From tempdb.sys.columns Where object_id = Object_ID(N'FooX')
Order By name, Description;
go
Drop Table #T
go
Drop Table FooX
The output of that is
In Real, not in or different in Temp c 3 56 4 10 0 NULL
In Real, not in or different in Temp d 4 167 20 0 0 SQL_Latin1_General_CP1_CI_AS
In Real, not in or different in Temp e 5 56 4 10 0 NULL
In Real, not in or different in Temp f 6 167 20 0 0 SQL_Latin1_General_CP1_CI_AS
In Temp, not in or different in Real f 5 167 -1 0 0 SQL_Latin1_General_CP1_CI_AS
In Real, not in or different in Temp g 7 106 5 4 0 NULL
In Temp, not in or different in Real g 6 106 5 3 1 NULL
In Temp, not in or different in Real x 3 56 4 10 0 NULL
In Temp, not in or different in Real y 4 167 3 0 0 SQL_Latin1_General_CP1_CI_AS
From which you can quickly see that the differences are c, d, and e are in the real table and not the temp table, f is in both tables but the max_length is different, g is in both table, but the precision and scale are different, and x and y are in the temp
table, but not the real table.
Tom

How to set initial column widths for a table

What I'd like to do is to control the initial column widths for a table.
I'm building the table by using a class which extends AbstractTableModel. This class takes care of setting the headers and reading the data for the table.
If I do the following:
VarTableModel vtm = new VarTableModel(vi);
JTable jt = new JTable(vtm);
JScrollPane jsp = new JScrollPane(jt);
frame.getContentPane().add(jsp);
frame.setVisible(true);
I will see a table in my window. The widths of the columns are equal and are a function of the horizontal dimension of the window.
I have tried to set the width of a column by doing the following:
TableColumn aColumn;
aColumn = jt.getColumn(vtm.getColumnName(0));
aColumn.setWidth(40);
But this has no effect on what gets displayed. I can force the widths that I want by using 'setMaxWidth' but this has the unfortunate side effect of not allowing the user to make the column wider if they want.
What I'd like is a way to specify the widths of the columns when initially displayed and then let the user adjust to their liking.
I'm sure that there is a way to do this, but I don't seem to understand where to intervene in the process to produce the effect that I want.
Any help or suggestions will be greatly appreciated!

Table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
add this line and try ur codeThanks for the suggestion! Unfortunately, it doesn't seem to do the trick. Here is an abbreviated segment of my code:
vtm = new VarTableModel(vi);
JTable jt = new JTable(vtm);
// we want a horizontal scrollbar, so turn resizing off
// and we want to control column widths
jt.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
aColumn = jt.getColumn(vtm.getColumnName(0));
aColumn.setWidth(40);
. // same kind of thing for each column
aColumn = jt.getColumn(vtm.getColumnName(4));
aColumn.setWidth(400);
JScrollPane jsp = new JScrollPane(jt);
frame.getContentPane().add(jsp);
frame.setVisible(true);
If I do the above, the table gets displayed with each of the five columns the exact same width. So, the sizing of the columns is happening somewhere else despite turning auto resizing off.
Where is that occurring and how can I intervene so that I can control the widths of the columns on initial display and still allow the user to adjust the widths if they so choose?

How do I restore column headings in Response table after accidently deleting them? Undo doesn't work.

How do I restore column headings in Response table after accidently deleting them? Undo doesn't work (only seems to go back one level). I also have so many headings I won't be able to type them in manually!

With the help of information from user, ptressel, in [https://support.mozilla.org/en-US/questions/1032154#answer-673322 a post here about the existence of sessionstore.js when version 33 was released], I was able to easily recover my tabs and tab groups as follows:
# close Firefox and, perhaps, allow a few seconds (30s?) for any final closing of files;
# check to see if you have a sessionstore.js file in your profile folder, named like the one I documented in my original post above;
# if it is not timestamped prior to the discovery of your problem, open the sessionstore-backups folder;
# check if the recovery.js file is suitably timestamped and, if not, the recovery.bak.
# At this point, you are likely to find that none of them are prior to your problem occuring. If so, open your backups of this folder and go through steps 2-4 to find a file prior to your problem occuring.
# When you find a file, copy it to the root of your current profile folder and name it, "sessionstore.js"
# Open Firefox. Mine opened up as desired.
This is a Windows solution. Sorry I can't comment on other platforms, but I'd bet that as this is just a file copy and renaming, it is likely the same.
For Windows users, you may find you need to sign out and login as an administrator in order to access the backups. You need not logoff your standard account, but do have Firefox closed as described above.
Hope that helps.

Max no columns allowed in a table

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