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Using Cursor Variable As A Tablename

I am currently using a cursor to scroll through sysobjects to extract table names and then extracting relevant column names from syscolumns.

I then need to run the following script:

declare Detail_Cursor cursor for
select @colname, max(len(@colname)) from @table

The message I receive is "must declare variable @table".

Immediately prior to this script I printed out the result of @table which works fine so the variable obviously is declared and populated.

Can anyone let me know what I'm doing wrong or how I can get the same result.


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hi all how are you today i am not good because i can't set this variable in this query please read this thanks

create table aaa1 (id_no int, name varchar(20))
create table aaa2 (id_no int, name varchar(20))

insert into aaa1 values (1,'rahmi')
insert into aaa1 values (2,'atilganer')
insert into aaa1 values (3,'hasan')

insert into aaa2 values (4,'rahmi')
insert into aaa2 values (5,'atilganer')
insert into aaa2 values (6,'hasan')

/* declaring any numeric variable*/
declare @id_no_var int
/* and set variable to max table name's (aaa2 table in this example)
id_ no column*/

set @id_no_var =
(select max(id_no) from
(select max(name) insqlhelp from
sysobjects where name like 'aa%') insqlhelp2 )

this query return:

Server: Msg 207, Level 16, State 3, Line 3
Invalid column name 'id_no'.

this error returned in second

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How Do I Select Tablename In Subquery
hi all how are you today i am not good because i can't set this variable in this query please read this thanks

create table aaa1 (id_no int, name varchar(20))
create table aaa2 (id_no int, name varchar(20))

insert into aaa1 values (1,'rahmi')
insert into aaa1 values (2,'atilganer')
insert into aaa1 values (3,'hasan')

insert into aaa2 values (4,'rahmi')
insert into aaa2 values (5,'atilganer')
insert into aaa2 values (6,'hasan')

/* declaring any numeric variable*/
declare @id_no_var int
/* and set variable to max table name's (aaa2 table in this example)
id_ no column

note :insqlhelp and insqlhelp2 is an alias for tablename query (recommended from sql help

set @id_no_var =
(select max(id_no) from
(select max(name) insqlhelp from
sysobjects where name like 'aa%') insqlhelp2 )

this query return:

Server: Msg 207, Level 16, State 3, Line 3
Invalid column name 'id_no'.

this error returned because max(id_no) column is absent

if you are run
select * from
(select max(name) insqlhelp from
sysobjects where name like 'aa%') insqlhelp2

this query return that

insqlhelp ---------------

(1 row(s) affected)

this mean that my table name query returned table name but i cant use this name in any other query (i think because of daclaring alias "insqlhelp, insqlhelp2")

other way is

set to any other text variable to table name,
and concetanate to query,
and execute with exec

but in this way you cant set to my int variable

please help me thanks for all


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HiCan someone please shed some light as to how this can be done. With the below sql statement as you can see I don't want to declare the table name but would rather the table name be passed in via a parameter. I've tried declaring it as a varchar parameter but it doesnt seem to like it if I don't add a valid table name. Any ideas how this can be done. * from @tableName where condition = condition

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Hi All,

I am facing a unique problem, In my DB all tables which has nvarchar datatype columns. When i see any table in EM design mode it shows length of navrchar datatype column correct.

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then it will show length of my nvarchar column just double.

when i see all my nvarchar columns in syscolumns it will display the length of my nvarchar columns just double then actual.

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Unfortunately I'm still on step 1 <sad look>



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I have a table that lists available dbs.

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... fetch next into

I don't have it shown here, but I have been able to include @dbnme into the following problem query, replacing dbo with +dbname+'..[calenar...

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and OBJECTPROPERTY(id, N'+'''IsUserTable'''+') = 1)'

exec (@checkstr)

** end here's the problem

I want to change this from informational in the QA to actually be able to do something, now that I've said "If exists...." do something or not.

*** This is my outer loop/cursor, the inner does a calendar query and the inner-most does a per-record update of my sales table based on calendar forecasted sales data. Not all db's starting with "us" have a calendar table, I want to skip these.

But I've not found a way to set a var or other wise. In essense I want to loop through this table.



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I'm trying to implement a sp_MSforeachsphowvever when I call sp_MSforeach_worker
I get the following error can you please explain this problem to me so I can over come the issue.

Msg 16958, Level 16, State 3, Procedure sp_MSforeach_worker, Line 31

Could not complete cursor operation because the set options have changed since the cursor was declared.

Msg 16958, Level 16, State 3, Procedure sp_MSforeach_worker, Line 32

Could not complete cursor operation because the set options have changed since the cursor was declared.

Msg 16917, Level 16, State 1, Procedure sp_MSforeach_worker, Line 153

Cursor is not open.

here is the stored procedure:

Alter PROCEDURE [dbo].[sp_MSforeachsp]

@command1 nvarchar(2000)

, @replacechar nchar(1) = N'?'

, @command2 nvarchar(2000) = null

, @command3 nvarchar(2000) = null

, @whereand nvarchar(2000) = null

, @precommand nvarchar(2000) = null

, @postcommand nvarchar(2000) = null


/* This procedure belongs in the "master" database so it is acessible to all databases */

/* This proc returns one or more rows for each stored procedure */

/* @precommand and @postcommand may be used to force a single result set via a temp table. */

declare @retval int

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/* Create the select */

EXECUTE(N'declare hCForEachTable cursor global for





+ @whereand)

select @retval = @@error

if (@retval = 0)

EXECUTE @retval = [dbo].sp_MSforeach_worker @command1, @replacechar, @command2, @command3, 0

if (@retval = 0 and @postcommand is not null)


RETURN @retval


example useage:

EXEC sp_MSforeachsp @command1="PRINT '?' GRANT EXECUTE ON ? TO [superuser]"


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@a bit
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Select * from Products

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