Test To See If A Column Exist.
Jan 22, 2007
Do you know of some SQL that I can test a table to see if a column exists or not inside a stored procedure?
What I have is a table that contains data for a 10 year history. I asked at the time and was told at the beginning of every new year the table would create 2 new columns so I dynamically set up some of my stored procedure to provide for that….well as of Jan 22 they have not updated them so I have 2 options:
1) hard code the first year in there and change it when they tell us
2) test for the field if it is there start the countdown to grab the rest of the historic info….if not check for the next year until it finds the field in the DB.
I’d rather do 2.
Thanks for any help.
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Feb 10, 2004
Hi all,
I'm trying to be slick, but so far am just all wet *snicker*
I've got a table with rows that may or may not exist, and am trying to retrieve a column if an associate row DOES exist.
For argument's sake, my PIndex table looks like:
PID int
CreateDate smalldatetime
CloseID float
Here is my select logic that I thought would save an extra select to load my local variable if the row is actually in the table...
DECLARE @CloseID float
IF NOT EXISTS (SELECT @CloseID = CloseID
FROM PIndex
WHERE ((PID = '14') and
(CreateDate = '2004-02-06')))
SET @CloseID = 100
The SET afterwards is just to initialize the variable if it can't be had from an existing row in the table.
The trouble is, that it fails to compile with the following error:
>>>>> Line 3: Incorrect syntax near '='.
Any insights? My goal is to use a single select to load the value into my local variable if the associated row exists, or to set my local variable to 100 if it doesn't.
Thanks!
Paul
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Sep 11, 2007
Posted - 09/10/2007 : 15:53:26
Hey all - got a problem that seems like it would be simple (and probably is : )
I'm importing a csv file into a SQL 2005 table and would like to add 2 columns that exist in the table but not in the csv file. I need these 2 columns to contain the current month and year (columns are named CM and CY respectively). How do I go about adding this data to each row during the transformation? A derived column task? Script task? None of these seem to be able to do this for me.
Here's a portion of the transformation script I was using to accomplish this when we were using SQL 2000 DTS jobs:
'**********************************************************************
' Visual Basic Transformation Script
'************************************************************************
' Copy each source column to the destination column
Function Main()
DTSDestination("CM") = Month(Now)
DTSDestination("CY") = Year(Now)
DTSDestination("Comments") = DTSSource("Col031")
DTSDestination("Manufacturer") = DTSSource("Col030")
DTSDestination("Model") = DTSSource("Col029")
DTSDestination("Last Check-in Date") = DTSSource("Col028")
Main = DTSTransformStat_OK
End Function
***********************************************************
Hopefully this question isnt answered somewhere else, but I did a quick search and came up with nothing. I've actually tried to utilize the script component and the "Row" object, but the only properties I'm given with that are the ones from the source data.
thanks in advance!
jm
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May 7, 2007
I am using a SQL command in ASP.NET to send a query to a an OLAP cube that returns a dynamic set of data that I load into a datatable and then bind to a GridView. I have made my own ITemplate implementaton for displaying and formatting the data, and the following line is causing me problems:
RawValue = DataBinder.Eval(row.DataItem, "[Month].[Month].[MEMBER_CAPTION]")
The error returned is:
Month is neither a DataColumn nor a DataRelation for table
My guess as to what is happening is that it sees the brackets in the field name and stops reading the field name at [Month], when the actual field name is much longer. I know that it knows about the column name because it displays it correctly in the header. Since I am loading this from an OLAP cube the names of my columns vary based on the criteria so I cannot alias the column because I don't know exactly which columns will be displayed. Does anyone know how I might get the DataBinder.Eval function to work with fields that contain square brackets [ and ] ?
If I use the GridView's "auto-generate fields" option it will show the data (and this is the column name) but I lose all control over formatting and the other custom code I'm writing in my ITemplate interface.
Thanks
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Jun 24, 2014
I have a script that loops through a series of tables to send data to a table from each of the tables. My issue is that not all tables have the columns I need in them. What I would like is to replace the column with another column when it does not exist. Something like below
Select Misisng_Column(A.Name, replace with B.Name) as Name
FROM SomeTable A
Cross Join (Select Name FROM AnotherTable) B
AnotherTable has one record in it. To avoid a Cartesian issue. Like I said just an example
In my real script the table aliased as A is from a list of tables in a sys.tables query that loops through to the end.
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Jan 30, 2008
Hi,
I have a column in table which tells me whether Tax should be calculated on a price. This is stored in a column called taxIncluded. I have a 'price before tax' column e.g. grossPrice. I want to calculate the price after tax e.g. netPrice if the taxIncluded column is set to 1. How do I form my sql statement to test whether the taxIncluded is set to 1 & therefore add the tax at say 20%.
e.g.
id name grossPrice taxIncluded netPrice <--- calculated within SQL
-- ------------- ------------------- ---------------- -------------
1 Product1 10.00 1 12.00
2 Product2 20.00 0 20.00
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Mar 8, 2004
Hello Everyone,
Hope someone will be able to help me out here.
I have a text file exported from my DTS package and it requires an '!' as a custom column delimiter.
Does anyone have any idea how I can use the '!' mark instead of the Tab or Vertical Bar as my Column Delimiter?
Would appreciate any suggestions.
Thanks,
Kay
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Apr 11, 2008
Is there a way to check for System.BDNull when I use the column name instead of column index? The column Photographer (in the excample below) sometimes contains the value null, and then it throws an error. Or do I have to go back to counting columns (column index of the returned data) again? try { connection.Open(); using (SqlDataReader reader = command.ExecuteReader()) { if (reader.Read()) { albumItem = new Album((int)reader["Id"]); if (reader["Photographer"] != null) albumItem.Photographer = (string)reader["Photographer"]; albumItem.Public = (bool)reader["IsPublic"]; } } } Regards, Sigurd
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Mar 12, 2005
Table : Department
Col :
Department ID
Name
Description
CREATE PROCEDURE GetDepatmentID AS
SELECT Department ID, Name
FROM Department
RETURN
Trying to create strored procedure and get the error that "Department" column does not exist.
Please know verily new to this so have patience
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Oct 12, 2015
We are setting up a test lab environment with 100 machines. We want one master testing db that gets replicated to each to run scripted application tests nightly.
My goal is to minimize the amount of work to move this thing to each of the 100 test machines. I am wondering if we need to even have the sql local and invest in a monster db server with 100 copies of the db we restore and each test machine point to their own db on that server, or if I should use db mirroring or something to get the master test db to each of those machines instead.
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Aug 25, 2015
I had an existing table with lots of indexes.
As a test (fro speed) - I added a non clustered column-store index.
When I run test queries it always ignores my new column-store index. Why?
Should I remove the old indexes, leaving just the column store?
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Jul 18, 2007
Hi,
I am getting message while modifying one table in SSMS like "Table '?' could not be loaded. Column '?' does not exist" . Howevery particular column exist in table and even i am able to modify it with T-SQL.
Any Idea?
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Jan 6, 2004
Source server MSSQL7.0
Destination server MSSQL2K
I'm setting up replication for reporting purposes to another SQL-server.
When I start the distribution agent I get the following error:
Column name '<here's the name of a column I didn't publish and don't need to replicate>' does not exist in the target table.
Error number: 1911
I assume this is because of some dependencies between the columns.
Is there any way I can replicate without those columns?
Regards
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Oct 17, 2006
Now that we have a good programming model in SSIS - the question is whether to write automated unit tests for your packages, and would it generally be a good idea for packages?
Also - if yes to write tests - then where to find more informations regarding How to accomplish that?
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Nov 27, 2007
hi every one,
i need to test SSIS pacakge which will import data from different database where record count is around 5 millions.
iam planning to test it through c# code as well as manually also.
SSIS source : consist of 7 tables
SSIS destination :consist of 7 tables
Using c# code iam trying to run ssis package through batch file.
i am putting expected rowcount, column count in an excel file and comparing same with destination tables by writing query implementing ADO.Net concept.
am i going right way ,can any one suggest best and productive way to test the ssis package .
what are the other things i need to test it.
do any one can add test cases to it.
S.No
Test Case
1
Verify all the tables have been imported.
2
Verify all the rows in each table have been imported.
3
Verify all the columns specified in source query for each table have been imported
4
Verify all the data has been received without any truncation for each column.
5
Verify the schema at source and destination
6
Verify the time taken /speed for data transfer
7
Fields truncated due to difference in length of the field at destination.
Regards
Arif shareef
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Aug 8, 2007
hi All,
Following code generates error 107 (SQL Server 2000, SP3a):
SELECT
*
FROM
dbo.AssessmentItemHierarchy Parent
INNER JOIN dbo.RaterCategory
INNER JOIN dbo.RaterType
ON RaterCategory.ID = RaterType.RaterCategoryID
INNER JOIN dbo.AssessmentRater
ON AssessmentRater.RaterTypeID = RaterType.ID
INNER JOIN dbo.AssessmentItem
ON AssessmentItem.ID = Parent.ChildItemID
INNER JOIN dbo.Assessment
ON AssessmentItem.AssessmentID = Assessment.ID
INNER JOIN dbo.AssessmentResponse
ON AssessmentResponse.AssessmentItemID = AssessmentItem.ID
ON AssessmentResponse.AssessmentRaterID = AssessmentRater.ID
INNER JOIN dbo.ImageInstance
ON ImageInstance.ID = RaterType.ImageInstanceID
INNER JOIN dbo.AssessmentItem ParentGUID
ON Parent.ParentItemID = ParentGUID.ID
Error on Run:
Msg 107, Level 16, State 2, Line 2
The column prefix 'Parent' does not match with a table name or alias name used in the query.
The only work-around I have found is a rewrite of order:
SELECT
*
FROM
AssessmentItemHierarchy Parent
INNER JOIN RaterCategory
INNER JOIN RaterType
INNER JOIN AssessmentRater
INNER JOIN AssessmentItem
INNER JOIN Assessment ON AssessmentItem.AssessmentID = Assessment.ID
INNER JOIN AssessmentResponse ON AssessmentItem.ID = AssessmentResponse.AssessmentItemID
ON AssessmentRater.ID = AssessmentResponse.AssessmentRaterID
ON RaterType.ID = AssessmentRater.RaterTypeID
ON RaterCategory.ID = RaterType.RaterCategoryID
INNER JOIN ImageInstance
ON RaterType.ImageInstanceID = ImageInstance.ID
ON Parent.ChildItemID = AssessmentItem.ID
INNER JOIN AssessmentItem ParentGUID ON Parent.ParentItemID = ParentGUID.ID
Not very pretty... anyone know why I'm getting this error message with the first version of my query?
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Dec 3, 2013
I have data as below: select ID,code,go,back from tableA
ID code go back
2 C US UK
2 A UK US
1 A US UK
1 Z UK US
1 C UK US
1 A US UK
I only want to pull out whole ID group which code Z exist. I tried as below:
select ID,code,go,back from tableA A
where exists
( select ID,go,back
from tableA B with (nolock)
where A.ID = B.ID
and A.code='Z')
But it only appear:
ID code go back
1 Z UK US
How can I appear with the group as well?
ID code go back
1 A US UK
1 Z UK US
1 C UK US
1 A US UK
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Jun 25, 2015
I need to restore test DB from production backup but once it is restored I would need all the permissions of sql logins and windows AD account intact in test Db as it was before.
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Nov 24, 2005
Hello all,
I have a branch a data, now i need to search through a database to check whther it is exist in that database or not, any syggestion?
Example:
Now i have data 123, 234, 345. Let say data 123 and 234 is exist in that database, but data 345 is not exist in that database.
What SQL am i suitable to use to get those result exist(123, 234) and those result not exist (345)?
The database structure is someting like this:
ID NAME O_NAME
-- ----- --------
1 120 123
2 234 234
3 345 345
1) The data consider 'exist' if it exist in column NAME or column O_NAME (either one).
2) The data consider 'not exist' if it not exist in neither NAME column nor O_NAME column
After the SQL query, someting is expected:
Exist:
ID NAME O_NAME
-- ----- --------
1 120 123
2 234 234
Not Exist:
ID NAME O_NAME
-- ----- --------
3 345 345
I'll appreciate if anyone can provide me a solution..Thanks!
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Oct 16, 2014
I am trying to pull a min value of a date column from table 1, if table 1 does not have any record I need pull a date column from table 2. Table 2 will always have a unique record ID (No duplicate ID's).
Table 1
ID date
1 1/1/2014
1 1/5/2014
Table 2
ID date
1 1/5/2014
2 10/15/2014
Here is the desired result when running for ID = 1 (select Min(date) where ID = 1, I should be getting 1/1/2014 from Table 1.
If I am running the same query where ID=2 then I should be getting 10/15/2014 from Table 2. So basically I need to check if a value exists on Table 1 first, if there is no value on Table 1 and then to grab the value from Table 2.
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Feb 22, 2008
I am trying to test to see if my code is returning rows. If it's not I want to display an error saying "Nothing Found" Please review and give me your thoughts on the best way to accomplish this.
1 Protected Sub btnLogin_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnLogin.Click
2 Dim SubEmail As String
3 Dim SubPassword As String
4 SubEmail = txtNewsEmails.Text
5 SubPassword = txtNewsPassword.Text
6 Session("NewsEmail") = SubEmail
7 Session("NewsPassword") = SubPassword
8 Dim sID As Integer
9
10 Dim cs As String = ConfigurationManager.ConnectionStrings("csTiPs3").ConnectionString
11 Dim cn As SqlClient.SqlConnection = New SqlClient.SqlConnection(cs)
12 cn.Open()
13 Dim selectString As String = "Select SubscriberID from NewsletterSubscribers WHERE SubscriberEmail = '" + SubEmail + "' AND SubscriberPassword = '" + SubPassword + "'"
14
15 Dim cmd As SqlClient.SqlCommand = New SqlCommand(selectString, cn)
16
17 Dim reader As SqlDataReader
18 reader = cmd.ExecuteReader
19 While reader.Read()
20 sID = reader("SubscriberID")
21 End While
22 Session("SubscriberID") = sID
23
24 reader.Close()
25
26 rtsNewsletters.SelectedIndex = 1
27 rtsNewsletters.FindTabByText("Subscribe").Enabled = True
28 rmpNewsletters.SelectedIndex = 1
29
30 End Sub
Thanks all,
Brett
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Mar 8, 2007
Duplicate post
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Jul 24, 2006
I recently lost my job and wanted to do some test development to keep my skills up to date. The problem is I don't have access to any data sources. Is there such a thing around? I tried installing microsoft's trial of SQL 2005 but can't get it to run on my laptop and SQL 2000 trial no longer exists. I simply need to create a SQL db/tables etc. Thanks in advance.
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Sep 25, 2007
Hi!
I am currently utilizing the checksum function to generate a hash that I later compare to detect changes in a row.
CHECKSUM(field1, field2, field3, field4)
Now I'd like to use the HashBytes function instead over the same fields. But the HashBytes function accepts only one data value. What is the most effective and reliable way of getting an MD5 over several fields?
Thanks
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Apr 10, 2008
Hi.
I have an application where I allow users to type in their SQL queries. Before I store those queries I have to make sure that they are correct, both syntax-wise and data type-wise. For that I execute the query against the database and trap any errors that may be returned and that's how I judge if the query was OK.
In order to keep this test as quick as possible, I tried to add a WHERE clause to it like: WHERE 1=2, so no results are returned. But then I discovered that the addition keeps errors from happening if they are of ata type nature.For instance "select orderid + 'test' from orders where 1=2", run against the Northwind database, returns no errors, while OrderID is numeric and U'm adding a string to it!
Next, I tried to return only one row: "select top 1 orderid + 'test' from orders". This time the error is thrown, however the query still takes a looong time when run on a huge table. I don't kknow why that is, but it seems that the engine runs the query for the entire table and then gets the first row!
Does anyone have an idea ehat's happening or have a better suggestion on how I can perform my test without killing the database?
Thanks.
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Nov 18, 2005
I have a stored procedure which runs a query, then turns it on its side (so that the rows are column headers).What I need to do now is test if any of the values in a row from this stored procedure are null.Any suggestions on how to get started? Is there some function that will tell me if any value in the row is null?
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Oct 14, 2002
I need to refresh a test db that is running on the same instance as the prod db. Should I just use DTS or is there a better way?
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Mar 24, 2005
Hello Everyone,
What is the best way to test connectivity with the database from the application on a frequest basis?
Thanks.
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May 1, 2006
Hi -
I'm having a problem with a VB6 program I'm writing that posts data to a SQL server. The problem occurs when the SQL server is unavailable. When this happens it causes the program to hang for at least 30 seconds before releasing. The hang happens at the code that connects to the SQL server, because the server isn't there. I've added code found on this site to test the connectivity prior to making my actual data connection, but this causes the same hang. Is there any way to verify connectivity to an SQL server without actually trying to make the connection? I'm really trying to eliminate the hang that occurs when the server is unavailable.
Thanks
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May 17, 2007
I have gotten some criticism from coworkers regarding this test and just wanted to see what you guys think. I realize the wording could use improvement and any criticism towards making it easier to understand is much appreciated.FWIW - I had to solve this problem on the job so I feel it is a real-world test that helps me understand how people think and if they try to find alternate solutions.Thanks!~~~~~~~~~~~~~~~~~~~~Given a table that has over 100,000 records…SUBSIDIARY=========PARENT_IDINTCHILD_IDINTULTIMATE_PARENT_IDINTCLEANUP_INDBIT…where each PARENT_ID can have multiple CHILD_ID values, but the PARENT_ID should not equal the CHILD_ID. After an initial data load, the ULTIMATE_PARENT_ID and CLEANUP_IND columns contain NULL values (see page 2 for sample data).ULTIMATE_PARENT_ID is defined as the topmost parent in the chain for the particular CHILD_ID record, so if the chain was only 2-level’s deep the ULTIMATE_PARENT_ID is the CHILD_ID’s PARENT_ID’s PARENT_ID.Please write an answer for all three questions below:A)Which of the following queries should you run first?B)Write an optimized query to identify the ULTIMATE_PARENT_ID for each CHILD_ID and set its value into the ULTIMATE_PARENT_ID column.C)Write a query to identify ALL of the circular references and mark each record that is a circular reference by updating the CLEANUP_IND column to 1.~~~~~~~~~ Page 2 ~~~~~~~~~ Sample Data, remember though this table has over 100,000 records and the parent-child chain can go n-levels deep – where n is not known.PARENT_IDCHILD_IDULTIMATE_PARENT_IDCLEANUP_IND1024512NULLNULL362300NULLNULL887541NULLNULL10221024NULLNULL546887NULLNULL5122305NULLNULL112967NULLNULL697123NULLNULL901452NULLNULL2300666NULLNULL334445NULLNULL512903NULLNULL884554NULLNULL313313NULLNULL554884NULLNULL112119NULLNULL967555NULLNULL2305333NULLNULL33336NULLNULL541546NULLNULL10301020NULLNULL112999NULLNULL
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Aug 1, 2007
This is a test post
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