SQL Query To Detect Non-existence Of Certain Records

Dec 27, 2007

Here is my query:

SELECT dnn_Roles.RoleName, xyzUser.FirstName, xyzUser.LastName, xyzUser.Email, xyzRewardPoint.Points, xyzRewardPoint.RewardID
FROM xyzRewardPoint INNER JOIN
xyzUser ON xyzRewardPoint.UserID = xyzUser.UserId INNER JOIN
dnn_UserRoles INNER JOIN
dnn_Roles ON dnn_UserRoles.RoleID = dnn_Roles.RoleID ON xyzUser.ProviderId = dnn_UserRoles.UserID
WHERE (dnn_UserRoles.RoleID = 3) OR
(dnn_UserRoles.RoleID = 4) OR
(dnn_UserRoles.RoleID = 6)
ORDER BY dnn_UserRoles.RoleID

What I need is to extend this query to detect any users who exist in dnn_UserRoles.RoleID 3, 4 or 6 but do not have a RewardID value of '43' in the xyzRewardPoint table.

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Detect Existence Of Datetime Fields

Jul 20, 2005

I'm looking for an efficient t-sql script to loop through all usertables in a db and determine/print the value of each row having adatetime field (including cases where there are multiple datetimefields per row)Help greatly appreciated..

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Oct 14, 2014

I'm trying to get a count of Employed and Available contractors per time period, and I have a table of Contracts... something like:

CREATE TABLE empContract(
empContractID INT IDENTITY(10000,1) PRIMARY KEY,
EndDate DATE,
ContractorAssigned INT,
FOREIGN KEY ContractorID REFERENCES Contractor(ContractorID)

I don't think this is possible without the existence of some kind of Calendar table. Given the existence of a calendar table, the query seems really simple - just something like:

SELECT cal.CalendarDate, ec.ContractID
FROM Calendar cal LEFT JOIN empContract ec ON cal.CalendarDate BETWEEN ec.StartDate AND ec.EndDate

The left join forces the existence of all dates in a range (@StartDate and @EndDate), so that when I try to create a graph with counts by day, I don't have any gaps in my time series.

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Aug 13, 2007

I am importing records from a flat file to a database table. If a record is in the table but NOT in the flat file, I need to update a date column in the table.

Any ideas?

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Nov 27, 2000

we tried out the following code in query analyser -

create procedure TrialProc


select * from sakjdhf

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does this mean the SQL server does not check for necessary objects when creating a stored procedure ? or is there some setting that we missed out whihch is causing SQL server to overlook the error in the code ?

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Jul 20, 2005

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Mar 20, 2014

writing the query for the following, I need to collapse the continuity. If the termdate for an ID is one day less than the effdate of the next id (for the same ID) i need to collapse the records. See below example .....how should i write the query which will give me the desired output. i.e., get min(effdate) and max(termdate) if termdate is one day less than the effdate of next record.

ID effdate termdate
556868 1999-01-01 1999-06-30
556868 1999-07-01 1999-10-31
556869 2002-10-01 2004-01-31
556872 1999-02-01 2000-08-31
556872 2000-11-01 2004-01-31
556872 2004-02-01 2004-02-29

output should be ......

ID effdate termdate
556868 1999-01-01 1999-10-31
556869 2002-10-01 2004-01-31
556872 1999-02-01 2000-08-31
556872 2000-11-01 2004-02-29

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Jan 18, 2008

I have a query similar to the following. The intent of this query is to retrieve the top 6 records meeting the specified criteria (LOGTYPENAME = 'Process Status Start' OR LOGTYPENAME = 'Process Status End' ) based on most recent dates. Please keep in mind that I expect to return up to 6 records for each unique LogProcessName. This could be thousands of different LogProcessNames with up to 6 records for each.

1) The table I am executing against currently is very large in size and thus takes a long time to execute against. It would seem there must be a more efficient query to get the results I am looking for?
2) CTE doesn't work on SQL 2000. I need a query that does.
3) I cannot modify the database itself in the process.

;WITH cte AS (
SELECT [LogProcessName], [LogBody], [LogDate], [LogGUID], row_number()
WHERE LogTypeName = 'Process Status Start'
OR LogTypeName = 'Process Status End' ) )
FROM cte
WHERE RN = 1 OR RN = 2 OR RN = 3 OR RN = 4 OR RN = 5 OR RN = 6
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Does anybody else have any idea that would yield the results that I am looking for and take into account items 1-3 above?

Thanks in advance.

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Nov 1, 2006

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Sep 24, 2007


I have a table with the follwing values

Table Cats

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Cat2, D2
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I just wanted to check whether Cat1 exists in the table. Can anyone post the query

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Jun 9, 2008

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I tried this:


insert #a EXEC master..xp_fileexist 'G:wklyld_SQLRMAPOLLOADUntar*.txt'

this code works as long as I give it a specific file name, but if I try the *.txt or *.zip it wont work.

I've also been trying to run


EXEC MASTER.dbo.xp_cmdshell 'dir "G:wklyld_SQLRMAPOLLOADUntar*.*"

and then copy the results to a temp table and then run queries against the table. But I havent had much luck with that either.

Can anyone help? Thanks in advance.

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Feb 7, 2006

Hi All:

Does anyone know where to find the property that disables the broadcast of the sql server from the point where you do not see the server show up in the list when one goes to

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Jul 27, 2013

I have created a table and want to alter that table.

I want to add identity to my existence column.

How to add identity to my existence column?

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Nov 3, 2015

I have a webpage where users can connect with other users by sending them a request. Sending the request just puts a row in a connect table that contains the users id, the targetusers id, a requesteddate, an accepted date and a disconnectdate (for the original requester to end the connection and a reject bit the the target can reject the request. Hoever I need to check to assure that the connect does nt already exist either as pending (requestdate is not null and accept date is null) or both dates are not null (connection already complete.).

ALTER PROCEDURE [dbo].[requestConnect]
-- Add the parameters for the stored procedure here
@requestor int,
@requested int
-- SET NOCOUNT ON added to prevent extra result sets from interfering with SELECT statements.

[Code] ....

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Jun 23, 2007

Dear All,

I wanted to know how do I know or check that whether a column exists in a table. What function or method should I use to find out that a column has already exists in a table.

When I run a T-SQL script which i have written does not work. Here is how I have written:

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I badly need some help.

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May 8, 2006

Apologies if this has been answered before, but the "Search" function doesn't seem to be working on these forums the last couple of days.

I'd just like to check if a table already exists before dropping it so that I can avoid an error if it doesn't exist. Doing a web search, I've tried along the lines of
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In both of these cases I get the error: "There was an error parsing the query. [ Token line number = 1,Token line offset = 1,Token in error = if ]"

Sooooo... what is the standard way to check for existence of a table before dropping it? Someone help? This seems like it should be simple, but I can't figure it out.

Thanks in advance!

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Sep 3, 2007


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Oct 4, 2007


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insert into #tmp values (42)

select * from sys.indexes

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order by name

But I can't see any rows about idxt1 :-(

If I say

create index idxt1 on #tmp(a)

againg I got error, because it exists.

How to check for existence using query?

B. D. Jensen

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Jun 26, 2006

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Jun 5, 2007

Check the field existence of a database table, if exist get the type, size, decimal ..etc attributes
I need SP
@Tablename varchar(30),
@Fieldname varchar(30),
@existance char(1) OUTPUT,
@field_type varchar(30) OUTPUT,
@field_size int OUTPUT,
@field_decimal int OUTPUT
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Dec 31, 2003

I'm familiar with how to check for the existence of a table before dropping it using the following command:

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[xxx]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
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How does one check for the existence of a temp table (using # syntax) before dropping it? I've tried various flavors of this command and none work. One flavor is

use tempdb
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[#xxx]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[#xxx]




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Jul 16, 2015

I've been matching some incoming contacts to existing contacts in a database and need to update, insert, or rematch based on the ifs below.

If name, phone, and email all provided for both, then use the highest Source. So if the Contact has a Source value of 5 and SourceContact has a ContactSource of 1, update Contact with SourceContact

If name, phone and email all provided, and source the same then update to new values.

If name and phone on SourceContact and name and Email on Contact then reset Contact_fk to -1 should not have matched, but should be an insert

If name and email on SourceContact and name and phone on Contact then reset Contact_fk to -1 should not have matched, but should be an insert

If name and phone on SourceContact and name and/or Phone is blank in Contact then update

If name and email on SourceContact and name and/or email is blank in Contact then update

If phone numbers can be different, just update record to SourceContact if it has a same or higher ContactSource

If email address do not match then set SourceContacts to -1 Contact_fk it was computed incorrectly. Both have a non blank email

If Contact_fk is 0 then it is a new contact and just insert it.

IF OBJECT_ID('dbo.SourceContact', 'U') IS NOT NULL DROP TABLE [dbo].[SourceContact];
CREATE TABLE [dbo].[SourceContact]
[ContactLastName] VARCHAR(30) NOT NULL CONSTRAINT DF_SourceContact_ContactLastName DEFAULT (''),
[ContactFirstName] VARCHAR(30) NOT NULL CONSTRAINT DF_SourceContact_ContactFirstName DEFAULT (''),


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Aug 11, 2015

I have a situation where our stored procedure inserts records from table_1 to table_2 when they don't already exist (uses the EXIST statement) on that table. If table_1 contains multiple records that are the same, it appears after the 1st record has been inserted, it does not recognize it as being there when it checks the existence when attempting to insert record 2.

Here's an example of the script:

insert into table_2 (col1,col2,col3)
select col1,col2,col3
from table_1 t1
where not exists (select '1'
from table_2 t2
where t1.col1 = t2.col1
and t1.col2 = t2.col2
and t1.col3 = t2.col3)

Data from Table_1 -- Assume that table_2 does not contain these records

col1 col2 col3
AA 11 A1
AA 11 A1
BB 22 B2

All 3 records would be inserted to table_2 in this example.

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Jun 13, 2006

This function, F_TEMP_TABLE_EXISTS, checks for the existence of a temp table (## name or # name), and returns a 1 if it exists, and returns a 0 if it doesn't exist.

The script creates the function and tests it. The expected test results are also included.

This was tested with SQL 2000 only.

if objectproperty(object_id('dbo.F_TEMP_TABLE_EXISTS'),'IsScalarFunction') = 1
begin drop function dbo.F_TEMP_TABLE_EXISTS end
create function dbo.F_TEMP_TABLE_EXISTS
( @temp_table_name sysname )
returns int

Checks for the existence of a temp table
(## name or # name), and returns a 1 if
it exists, and returns a 0 if it doesn't exist.


if exists (
select *
tempdb.dbo.sysobjects o
o.xtype in ('U')and
o.id = object_id( N'tempdb..'+@temp_table_name )
begin return 1 end

return 0

print 'Create temp tables for testing'
create table #temp (x int)
create table ##temp2 (x int)
print 'Test if temp tables exist'

[Table Exists] = dbo.F_TEMP_TABLE_EXISTS ( NM ),
[Table Name] = NM
select nm = '#temp' union all
select nm = '##temp2' union all
select nm = '##temp' union all
select nm = '#temp2'
) a

print 'Check if table #temp exists'

if dbo.F_TEMP_TABLE_EXISTS ( '#temp' ) = 1
print '#temp exists'
print '#temp does not exist'

print 'Check if table ##temp4 exists'
if dbo.F_TEMP_TABLE_EXISTS ( '##temp4' ) = 1
print '##temp4 exists'
print '##temp4 does not exist'

-- Drop temp tables used for testing,
-- after using function F_TEMP_TABLE_EXISTS
-- to check if they exist.

if dbo.F_TEMP_TABLE_EXISTS ( '#temp' ) = 1
print 'drop table #temp'
drop table #temp

if dbo.F_TEMP_TABLE_EXISTS ( '##temp2' ) = 1
print 'drop table ##temp2'
drop table ##temp2

Test Results:

Create temp tables for testing
Test if temp tables exist
Table Exists Table Name
------------ ----------
1 #temp
1 ##temp2
0 ##temp
0 #temp2

(4 row(s) affected)

Check if table #temp exists
#temp exists
Check if table ##temp4 exists
##temp4 does not exist
drop table #temp
drop table ##temp2


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May 10, 2006

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Aug 29, 2007

OK. Here's my situation. I check for the existence of a dummy .txt file using a script. I send an e-mail if it does not exist and exit package. The .txt file only exists if another .xls file is present which I import. However, during the validation phase of the package, the package fails because the .xls file does not exist. Is there a way to bypass the validation step? The only solution I came up with is to have a two-step job. The first runs the file check step and sends the e-mail. The second attemps to run the package and fails. Not a very graceful exit.

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Nov 14, 2007

Hi All,

Not played with SQL for a while and am a bit rusty so please excuse me if I sound like a demented idiot! )

It's for a data migration from something wierd to SQL, I just need to be able to advise whether a table is worth migrating or someone should manually enter the data (i.e. if only six random fields are populated in a table then get a secretary to enter it).

I was hoping someone might have already done this and have a query I can edit?!

As far as I can make out the query needs to loop through every table, loop through every row, check each field for an existance of data and output something useful.

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