Rapid Program Design
Mar 8, 2001
does anyone know of tools that allow free format screen design, easily programmable data validation and prgramming for use with SQL. I am used to using 4GL languages and want to avoid low level programming. For example to fifind a record and display the details i am used to a line of code that would allow the data field to do the find on to be entered and the next line of code would say find fieldname using index name and the results displayed
please say yes !!!
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May 12, 2004
Hello all.
Please help me shed light on the following problem:
I am deleting from 2 tables in a transaction. I experience a deadlock occasionally when deleting.
Here are the tables:
create table TABLE_1 (
ID integer not null,
TYPE_CD varchar(50) not null,
STATUS_ID integer not null,
NAME varchar(500) not null,
COMMENT varchar(500) null,
CREATED_DATE datetime not null,
CREATED_BY varchar(15) not null,
LASTMOD_DATE datetime null,
LASTMOD_BY varchar(15) null,
constraint PK_TABLE_1 primary key nonclustered (ID)
)
create table TABLE_2 (
TASK_ID integer not null,
TABLE_1_ID integer not null,
COMMENT varchar(500) null,
constraint PK_TABLE_2 primary key nonclustered (TASK_ID, TABLE_1_ID)
)
Table table_2 is an intersection table between table_1 and another lookup table (called task).
Whenever I delete from table_1 I need to delete from table_2 to maintain integrity.
The reason I do not have clustered indexes on the tables is b/c they start out empty (every day a housekeeping task deletes from them. Unfortunately I cannot change this...).
In my (web/jsp) application before I delete, I select from table_1 to get data I need to remember after the delete.
In order to avoid the "select for update problem", I use the "UPDLOCK" hint in the select like this:
select *
from table_1 WITH (UPDLOCK),
table_2 WITH (UPDLOCK)
where table_1.id = table_2.table_1_id "
and table_1.id = ?
and table_2.task_id = ?
I then issue my deletes in the following order:
delete from table_1
where task_id = ?
and table_1_id = ?
and then,
delete from table_1 where id = ?
The application sets the isolation level to READ COMMITTED.
The above 3 sql statements are executed as part of a transaction. Occasionally, when I drive the application, I get a deadlock. This happens intermittently. I have been able to reproduce the problem by attempting to delete records really fast, one after the other from the (web) front end.
When the deadlock occurs these are the locks that are held by the running processes:
Blocked SPID (10):
============
Object Lock Type Mode Status Owner Index Resource
app DB S GRANT Sess TABLE_2
app.dbo.TABLE_1 TAB IX GRANT Xact TABLE_2
app.dbo.TABLE_1 KEY U GRANT Xact PK_TABLE_2 (a400f609034c)
app.dbo.TABLE_1 RID U GRANT Xact TABLE_2 1:157:3
app.dbo.TABLE_1 PAG IU GRANT Xact PK_TABLE_2 1:443
app.dbo.TABLE_1 PAG IU GRANT Xact TABLE_2 1:157
app.dbo.TABLE_2 KEY S WAIT Xact PK_TABLE_2 (6501eda29ac1)
app.dbo.TABLE_2 KEY S GRANT Xact PK_TABLE_2 (ef007b1066ea)
app.dbo.TABLE_2 TAB IS GRANT Xact TABLE_2
app.dbo.TABLE_2 PAG IS GRANT Xact PK_TABLE_2 1:252
Blocking SPID (12):
=============
Object Lock Type Mode Status Owner Index Resource
app DB S GRANT Sess TABLE_2
app.dbo.TABLE_2 KEY X GRANT Xact PK_TABLE_2 (6501eda29ac1)
app.dbo.TABLE_2 RID X GRANT Xact TABLE_2 1:176:3
app.dbo.TABLE_2 TAB IX GRANT Xact TABLE_2
app.dbo.TABLE_2 PAG IX GRANT Xact PK_TABLE_2 1:252
app.dbo.TABLE_2 PAG IX GRANT Xact TABLE_2 1:176
I could not figure out what the problem is. Please help me with this.
Any help will be much appreciated.
Thanks in advance
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May 23, 2007
why we use sql exceptions ...
what the program will do if we caught that exception .. i need some suggestions ... i got this exception(String or binary data would be truncated.
The statement has been terminated.).. will it affect the functionality of the program...
hiow can i avoid this exception..
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May 21, 2007
Can I return a value in a variable from a SSIS program back to C# after the SSIS program is run from C#?
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May 13, 2015
I have a scenario like below
Product1
Product2 Product3
Product4 Product5
Product1 1
1 0 0
1
Product2 1
1 0 0
1
Product3 0
0 1 1
0
Product4 0
0 1 1
0
Product5 1
1 0 0
1
How to design tables in SQL Server for the above.
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Feb 13, 2002
Ok, I'm doing a football database for fixtures and stuff. The problem I am having is that in a fixture, there is both a home, and an away team. The tables as a result are something like this:
-------
Fixture
-------
fix_id
fix_date
fix_played
----
Team
----
tem_id
tem_name
-----------
TeamFixture
-----------
fix_id
tem_id
homeorawayteam
goals
It's not exactly like that, but you get the point. The question is, can I do a fixture query which results in one record per fixture, showing both teams details. The first in a hometeam field and the second in an away team field.
Fixture contains the details about the fixture like date and fixture id and has it been played
Team contains team info like team id, name, associated graphic
TeamFixture is the table which links the fixture to it's home and away team.
TeamFixture exists to prevent a many to many type relationship.
Make sense? Sorry if this turns out to be really easy, just can't get my head around it at the mo!
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Aug 18, 2015
I would like to create a table called product. My objective is to get list of packages available for each product in data grid view column while selecting each product. Each product may have different packages type (eg:- Nos, CTN, OTR etc). Some product may have two packages and some for 3 packages etc. Quantity in each packages also may be differ ( for eg:- for some CTN may contain 12 nos or in other case 8 nos etc). Prices for each packages also will be different that also need to show. Â How to design the table..Â
Product name  : Â
Nestle milk |
Rainbow milk
packages  :
CTN,OTR, NOs |
CTN, NOs
Price:
50,20,5 |
40,6
(Remarks for your reference):CTN=10nos, OTR=4 nos Â
| CTN=8 Nos
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Aug 29, 2001
i have a program which should give the out like this
XAPIALTMKT20010829105525.TXT
but its giving the output = 'X'
which is just the first initial...how
can i get this...
if i don't write the @filename=....
only then its giving the output..but i want to store it in the
varable..how can i do that
================================
declare
@v datetime ,
@filename varchar
select @v=getdate()
select @filename='XAPIALTMKT'
+CONVERT(varchar, @v, 112)
+SUBSTRING(CONVERT(varchar, @v, 108), 1, 2)
+SUBSTRING(CONVERT(varchar, @v, 108), 4, 2)
+SUBSTRING(CONVERT(varchar, @v, 108), 7, 2)
+'.TXT'
print @filename
================================================
thanks,
Harish
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Jul 23, 2005
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Hello, i installed :
SQL Server 2005 Express Edition with Advanced Services
Install Microsoft SQL Server 2005 Express Edition with Advanced Services
but I do not see any program in my program menu to open it. Is this a stand alone program I can open? Thanks
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Oct 10, 2007
Hi All,
I am trying to send an email from a cmd prompt from SQL Server 2005 server using mailsend program. I am getting the message "Could not send mail". I am really stumped, don't know how to fix it. Any suggesstions?
Thanks.
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Oct 9, 2007
Hi All,
I have installed SQL Server 2005 and created a job. I made the job failed to test the mailsend program. The notification step that uses the mailsend succeeded but I did not get an email. I am using mailsend program on SQL Server 2000 and it works fine. I am really stomped and don't know what to do to fix it?
Thanks.
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May 14, 2008
I've have following table,
tblHIT - this table will reveive record every minutes
Date | Time | Main_ID | Hit
------------------------------------
3/1/2006 | 100 | 200 | 8700
...
...
...
4/14/2008 | 100 | 200 | 4500
4/14/2008 | 100 | 201 | 8700
4/14/2008 | 200 | 200 | 3500
4/14/2008 | 300 | 201 | 7700
...
...
I've also 1 job in SQL Server Agent will execute STORED PROCEDURE and will filter 7 days record before from current date and insert it into tblHIT_7days. tblHIT_7days shown as follow
tblHIT_7days
Date | Time | Main_ID | Hit
------------------------------------
3/7/2008 | 100 | 200 | 8700
...
...
...
4/13/2008 | 100 | 200 | 4500
4/13/2008 | 100 | 201 | 8700
4/13/2008 | 200 | 200 | 3500
4/13/2008 | 300 | 201 | 7700
I've plan to create TRIGGER. This TRIGGER will insert the appropriate record from tblHIT into tblHIT_7days and also delete a appropriate record in tblHIT_7days. This INSERT and DELETE transaction depend on current date.
Is it possible, TRIGGER can do this?
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Oct 12, 2007
Hi,
In SQL Server is it possible to have a trigger that will throw an event which could be caught by C# program running in the back ground?
Is this even possible? If it is, have u any links to help/examples?
Regards!
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2. If I can deploy a sql file -- can it be done with Sql Server Express?
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Apr 15, 2008
On some occasions when trying to send data back to the server, the program will lock up for up to 30 minutes. The code below is the rda data transfer process and the function IsConnected() determines whether there is a connection.
If Not MainFrm.IsConnected Then
rda.ConnectionManager = True
End If
If MainFrm.IsConnected Then
Dim sCon As String = "Provider=SQLOLEDB;Data Source=175.21.21.121;Initial
Catalog=OurDb;User ID=UserId;Password=pwd"
rda.InternetUrl = "http://Ourwebsite.co.uk/tfr/sqlcesa30.dll"
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For i As Integer = 0 To RecCount - 1
Try
rda.SubmitSql(UpdateRec(i, 0), sCon)
Catch Ex As SqlCeException
ErrTxt = Ex.ToString
End Try
Next
Public Shared Function IsConnected() As Boolean
Dim request As HttpWebRequest
Dim response As HttpWebResponse
Try
request = CType(WebRequest.Create("http://www.intel.com/"), HttpWebRequest)
response = CType(request.GetResponse(), HttpWebResponse)
If response.StatusCode = HttpStatusCode.OK Then
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Else
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End If
Catch Ex As WebException
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Jan 4, 2007
Hi,
please have look into the code and let me know the solution plz.
string ProID;
try
{
using(SqlConnection conn=new SqlConnection(source))
{
conn.Open();
DataSet ds=new DataSet();
DDLProject.Items.Clear();
SqlCommand cmd=new SqlCommand("SP_ProjectSelect",conn);
cmd.CommandType=CommandType.StoredProcedure;
cmd.Parameters.Add("Name",SqlDbType.NChar,30,"@Name");
cmd.UpdatedRowSource=UpdateRowSource.None;
cmd.Parameters["Name"].Value=DDLProductLine.SelectedItem;
SqlDataReader dr=cmd.ExecuteReader(); ------------->>>> Here iam getting Following Error.
while(dr.Read())
{ Response.Write(dr["ID"].ToString());
}
}
}
catch(System.Exception ex)
{
Response.Write(ex);
}
Error:
System.InvalidCastException: Object must implement IConvertible. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteReader() at MIS.UI.ResourceList.DDLProductLine_SelectedIndexChanged(Object sender, EventArgs e) in c:inetpubwwwrootdotnet pgmsmisui
esourcelist.aspx.cs:line 121
Any suggestion plzz,where went wrong.
Thanks in advance
Regards
Mahesh Reddy
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May 15, 2007
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May 29, 2008
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Hi,
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May 19, 2004
Hi,
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Oct 4, 2007
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Mar 15, 2008
Hi. First 3 paragraphs are about problem in general - this is for those who consider them well experienced and may have better ideas about how to solve this whole thing. In forth paragraph is the tehnical question.
Hi. First 3 paragraphs are about problem in general - this is for those who consider them well experienced and may have better ideas about how to solve this whole thing. In forth paragraph is the tehnical question.
Situation:
So me was trying to find out why files are saved in database incorrectly. First idea was to create a MD5 checksum of a file in my application and then create one with SQL script that saves data in database (data being the file, by the way).
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SQL Server 2005 side - not so great. The only function that I have found so far that creates hash is HashBytes that is supposed to do it's job only there's a limintation to data size which means i cant make hash of say 4mb big file.
Problem:
So I figure maybe i could create a vb.net program that return a hash from a data passed to it and call it with SQL script (because hashbytes function doesnt work for me in case you didnt read the first 3 paragraphs)... but I don't know how:(
Any ideas?
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Jul 23, 2005
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Jun 8, 2006
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