ALL And Empty Set
Sep 29, 2006
SQL Server 2000 SP4. Hoping to find a logical explanation for a certain
behavior.
Consider this script:
USE pubs
GO
IF 1 = ALL (SELECT contract FROM dbo.authors WHERE state = 'CA')
PRINT 'TRUE'
ELSE
PRINT 'FALSE'
This, as expected, prints FALSE, since not all authors in CA are under
contract. Now, if the script is changed as follows:
USE pubs
GO
IF 1 = ALL (SELECT contract FROM dbo.authors WHERE state = '')
PRINT 'TRUE'
ELSE
PRINT 'FALSE'
then the result is TRUE. In other words, the expression evaluates to TRUE
when the select statement produces an empty set, which doesn't make sense
to me. Even more interesting, the expression
NULL = ALL (SELECT contract FROM dbo.authors WHERE state = '')
still evaluates to TRUE (ANSI_NULLS is ON).
Can anyone explain these results? Is this the expected behavior in the SQL
standard, or something that is specific to SQL Server? Thanks.
--
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Feb 26, 2007
@Names is a query string passed in, I need to count the number of records as a result of the below query/
Dim test As String
Dim sqlConnection3 As New SqlConnection("data Source=EQ-520-WEBSQLEXPRESS;Initial Catalog=CRDB.MDF;Integrated Security=True")
Dim cmd As New SqlCommand
Dim returnValue As Object
cmd.CommandText = "SELECT COUNT(ReqID) AS Expr1, LineManager FROM TblReqMain GROUP BY LineManager HAVING (LineManager = @Names)"
cmd.CommandType = Data.CommandType.Text
cmd.Connection = sqlConnection3
cmd.Parameters.Add("@Names", Data.SqlDbType.NVarChar)
sqlConnection3.Open()
cmd.Parameters("@Names").Value = test
If test = "" Then
Response.Write("An error occured")
Exit Sub
Else
returnValue = cmd.ExecuteScalar()
sqlConnection3.Close()
Label6.Text = "Number " & returnValue
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Feb 12, 2008
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Jan 26, 2000
Hi, I have a SQL Server 6.50 - 6.50.415 (Intel X86) and one database has 8Gb of data and 2Gb of log, the problem is that
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Thank You
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Jun 27, 2005
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sorry for my bad english
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Feb 27, 2006
I'm bcp-ing a table to a file. I've noticed that if a varchar column is empty, that both "bcp -c" and "bcp -c -k" export the empty value as #$00. Instead, I'd like to export the value as if it were null.
use monkey
go
create table tab1 (
myColumn varchar(10) null
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go
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go
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go
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May 14, 2007
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Mar 23, 2006
hello everyone,
am not sure if this is the right forum, but here goes.
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1. Is there a way of checking which user account deleted the columns ?
2. Or finding out what went wrong ?
This has never happened before
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Apr 19, 2007
Okay, so i have a procedure where i'm trying to build a left join, and for some
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Manual Code:
create PROCEDURE search_orders_11
@SPSirvarchar(3)= null,
@debug bit = 0 AS
DECLARE @sql nvarchar(4000),
@paramlist nvarchar(4000)
if @spsir='1'
select @sql = @sql+ 'SELECT o.state_abbrv, count(o.state_abbrv) as kount FROM dbo.mortgage o left join dbo.Spanish s on o.per1_lname = s.lname'
select @sql=@sql+' WHERE 1 = 1'
SELECT @sql = @sql + ' group by o.state_abbrv ORDER BY o.state_abbrv '
here is the procedure:
create PROCEDURE search_orders_11
@SPSirvarchar(3)= null,
@debug bit = 0 AS
DECLARE @sql nvarchar(4000),
@paramlist nvarchar(4000)
if @spsir='1'
select @sql = @sql+ 'SELECT o.state_abbrv, count(o.state_abbrv) as kount FROM dbo.mortgage o left join dbo.Spanish s on o.per1_lname = s.lname'
select @sql=@sql+' WHERE 1 = 1'
SELECT @sql = @sql + ' group by o.state_abbrv ORDER BY o.state_abbrv '
here is the execution:
exec search_orders_11 @spsir=1
i get the whole command completed sucessfully, but no result. am i missing something here...
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Apr 24, 2007
Hi,
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I will be really thankfull if somebody can help me on this issue.
Thnks,
sqlzagi
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Nov 14, 2007
Is there any way to sort your results in a way that the empty results comes last? When I sort my recordset on a certain column I first get the empty values and the A, B, C etc. I would like to have it A, B, C, ..., Empty ones.
Regards
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Feb 11, 2008
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Jul 22, 2007
Hello,
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Feb 20, 2008
tbl_store
id numeric(9)
enddate datetime(8)
tbl_store Data
ID Enddate
1 01/02/2020
2
3 01/02/2010
4
5 01/02/2001
(empty enddate data is showing <null>)
This is my query...but i want to get date empty records too.
select * from tbl_store where Enddate> '02/20/2008'
I want output
1 01/02/2020
2
3 01/02/2010
4
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Nov 22, 2005
good day to everybody
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Aug 23, 2006
Hi,
I have used Red Gates SQL bundle to make an identical db on sql2005 express from sql 2000. When i run my query against the sql2000 i get what I want, but when i run it against the sql2005, i get nothing.
Anyone got any suggestions to why?
web.config:
<!-- <add name="TPLConnectionString" connectionString="Data Source=[SQL2000],1433;Network Library=DBMSSOCN;Initial Catalog=TPL;User ID=??????;Password=????????;"
providerName="System.Data.SqlClient" />
-->
<add name="TPLConnectionString" connectionString="Data Source=[SQL2005]\SQLEXPRESS,1433;Integrated Security=true;Network Library=DBMSSOCN;Initial Catalog=TPL;User ID=?????;Password=???????;"
providerName="System.Data.SqlClient" />
default.aspx.cs
dbConnection.Open();
String ISPQuery = "SELECT STATEMENT";
SqlCommand command = new SqlCommand(ISPQuery, dbConnection);
SqlDataReader reader = command.ExecuteReader();
Please help!!!
Best regards
Terje Kristensen
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May 16, 2007
I am creating three tables in a DataSet using three stored procedures and I need a way to know that either the tables have at least one row or preferably which if any has no rows. How can I do that?
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May 18, 2007
Hi,I wrote two queries to search in three tables mp_parent, mp_page and mp_parentThe first one is: SELECT mp_page.PID, mp_page.PageID, mp_page.PageContent, mp_page.ParID, mp_page.ChiID, mp_parent.ParentName FROM mp_page INNER JOIN mp_parent ON mp_page.ParID = mp_parent.ParentID The second one is:SELECT mp_page.PID, mp_page.PageID, mp_page.PageContent, mp_page.ParID, mp_page.ChiID, mp_child.ChildName FROM mp_page INNER JOIN mp_child ON mp_page.ChiID = mp_child.ChildID I used this way to display the records in a FormView public HttpContext context = HttpContext.Current; public void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { ViewState["srch"] = context.Items["srch"]; } FormView1.DataSource = GetTable(); FormView1.DataBind(); } private DataTable GetTable() { SqlConnection SqlCon = new SqlConnection("Data Source=AJ-166DCCD87;Initial Catalog=mp;Integrated Security=True;Pooling=False"); String SQL1 = "select mp_page.PID, mp_page.PageID, mp_page.PageContent, mp_page.ParID, mp_page.ChiID, mp_parent.ParentID, mp_parent.ParentName from mp_page INNER JOIN mp_parent ON mp_page.ParID = mp_parent.ParentID where PageContent like '%" + Convert.ToString(ViewState["srch"]) + "%'"; SqlDataAdapter Adptr = new SqlDataAdapter(SQL1, SqlCon); SqlCommandBuilder CB = new SqlCommandBuilder(Adptr); DataTable Dt = new DataTable(); Adptr.Fill(Dt); return Dt; SqlCon.Close(); } the question is how can I check if one record is empty to witch to another query ??Is it possible to know without using QueryString?Thank you
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May 28, 2007
(Newbie). I'm trying to: 1) check if the SELECT command has returned any records, and 2) put a msg box on the screen if there are no records returned from the SELECT query. The type of code I'm heading towards is: (but it's wrong). Thank you in advance for your C# code suggestion.
protected void SqlDataSource1_Selected(object sender, SqlDataSourceStatusEventArgs e)
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Mar 9, 2004
Hi Friends,
I have one query that i have to Replace the Empty Value of a filed with some other value how can i do in SQL??
ID Phone Name
1 122 abc
2 xyz
3 444 mmm
4 525 ccc
5 nvb
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Ashu
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Aug 29, 2004
i have insert/update SQL sentence, but sometimes there are empty values because there not required in the database so sometimes the sql sentence look this way:
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Apr 17, 2005
I would like to exclude any parameter that is empty from the SELECT
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SELECT PersonID FROM Persons WHERE
(FirstName = @firstname) AND
(LastName = @lastname) AND
(SSN = @ssn) AND
(AddressID = @addressid) AND
(DOB = @dob) AND
(Middle = @middle)
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Jul 11, 2001
example
create view v_GuestOrder
as
Select T1.id_Guest,T2.OrderName
from Guest T1
left join Order T2 T2.id_order = T1.Id_order
select * from v_GuestOrder
--
Id_Guest OrderName
-------- -----
1 spoon
2 phone
3
4 tv
I need something similar to
Select
id_Guest,
case orderName
when '' then Null -- Sql server gives error in thsi case
end as orderName
from v_GuestOrder
So I need to assign NULL to OrderName is query return empty string,
it will be treated by Crystal reports as Null
Please help , thanks
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Sep 10, 2001
I have a particular production database that on a few recent occasions has suddenly had one of it's tables empty of content. Now there are no jobs or triggers in place neither is any stored procedures that could perform a delete or alter table operation in place. The permissions have been set not to allow this either. The datatype is text only. What is intriguing is the QA server has an exact mirror and this dosen't happen. Has anyone come across this sort of phenomenon?
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Oct 5, 2001
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How can I empty an existing excel file before using DTS to export new data in this excel file? Or is there any way to delete this excel file from DTS task?
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Mar 1, 2000
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ODBC error: [Microsoft][ODBC SQL Server Driver][SQL Server]Line 1: Incorrect syntax near 'full'.
[Microsoft][ODBC SQL Server Driver][SQL Server]Line 1: Incorrect syntax near 'full'.
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Jan 30, 2001
I need to do a select on a table for all empty items in a column. What is the syntax for selecting the empty (NULL)?
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May 17, 2003
I am using this bcp out construct and it works fine except that if the query does not return values it bcp's out a file anyhow. This is not wanted and I am looking for a work around.
SELECT @Year = CONVERT(varchar(4), @trxYearMonthStart, 120)
SELECT @Month = RIGHT(CONVERT(varchar(7), @trxYearMonthStart, 120),2)
SELECT @cmd = 'BCP "SELECT * FROM ' + @TableToBeCleaned + ''
SELECT @cmd = @cmd + ' WHERE '+ @SelectedColumn + ' BETWEEN '
print @cmd
SELECT @cmd = @cmd + '''' + CONVERT(varchar(10),@trxYearMonthStart,120) + ''' and ''' + CONVERT(varchar(10),@trxYearMonthEnd,120) + ''''
print @cmd
SELECT @cmd = @cmd + 'AND NOT EXISTS (Select * from DBCleanerHist Where TableName = ''' + @TableToBeCleaned + ''' and sYear = '+ @Year + ' and sMonth = ' + @Month + ')'
print @cmd
SELECT @cmd = @cmd + ' " QUERYOUT ' + @DBCleanerBackUpPath+'' +@TableToBeCleaned +'_'+ @Year + '_' + @Month + '.txt '
SELECT @cmd = @cmd + ' -c -C1250 -S -Uopms -Psmpo'
EXEC master.dbo.xp_cmdshell @cmd
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thanks
mipo
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Aug 25, 2000
syslog is full in sql 6.5 - what is best way to empty
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Oct 4, 2004
I've got Initial and Secondary Approver categories. I need to open a cursor to test for the Secondary Approver, if the Cursor is empty I need to pick up the Initial approver. I'm not sure how to test for an empty cursor
--Cursor for the Approvwers
Declare Approve_curs cursor
FOR SELECT a.P_ID, a.Last +', '+ a.First
FROM tblApprovers a
where ((a.AppRole)='S')
FOR READ ONLY
--Open Cursor
OPEN client_curs
FETCH NEXT FROM Approve_curs INTO @P_ID, @text
'I need to test here for an empty Cursor ???
--Start Loop
WHILE @@fetch_status = 0
BEGIN ....
Thanks in Advance ...
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