Re: Stored Procedure Pl/SQL - Database Discussion Boards

Re: How to check for a never populated table on sql server 2005

Roberto Mazzone5-Aug-09 22:08

Roberto Mazzone

5-Aug-09 22:08

Mike,
I have to preserve the referential integrity of this constraint.

alter table tA
add constraint tB_tA_FK1 foreign key (b_id)
	 references tB (b_id)

Situation before moving data from DB_SRC to DB_DST
on DB_SRC.tA
a_id b_id
1 100

on DB_SRC.tB
b_id
100

on DB_DST.tA
a_id b_id
1 200

on DB_DST.tB
b_id
200

when i insert data from DB_SRC.tB to DB_DST.tB. b_id became 201 and when i insert data from DB_SRC.tA to DB_DST.tA
DB_DST.tA.b_id have to became 201. To achieve this goal i used the IDENT_CURRENT for DB_DST.tB (200) plus ROW_NUMBER (the rank progressive, from 1 to n) as previously reported.

I solved adding an extracolumn DB_DST.tB.id_src, than

on DB_DST.tB
b_id id_src
200
201 100

in this way i have the right correspondence to do the work as explained in the previous post.

Anyway many thanks for your interest.

NDoc to SQL scripts?

devvvy3-Aug-09 5:43

devvvy

3-Aug-09 5:43

hello

Can we use NDoc for SQL scripts?

Thanks

dev

Re: NDoc to SQL scripts?

leckey3-Aug-09 8:51

leckey

3-Aug-09 8:51

As far as I know NDoc is used only for C# code. You could probably use it if your C# code calls a SQL script, but you can't use it to actually write or create a SQL script.

Back in the blog beatch!
http://CraptasticNation.blogspot.com/[^]

Re: NDoc to SQL scripts?

devvvy3-Aug-09 14:51

devvvy

3-Aug-09 14:51

Great thanks.

dev

Stored Procedure Pl/SQL

Civic063-Aug-09 4:35

Civic06

3-Aug-09 4:35

how to write a stored procedure in which a temporary table is created and inserts are made into that table.

Re: Stored Procedure Pl/SQL

Vimalsoft(Pty) Ltd3-Aug-09 4:47

Vimalsoft(Pty) Ltd

3-Aug-09 4:47

CREATE PROC prc_insert_example
AS

SELECT * INTO #TEMP
FROM MYTABLE

CREATE PROC prc_insert_example
AS

CREATE TABLE #My_Temp
(
Age int,
FName varchar(15)
)

insert into  #My_Temp
select Age,FName from MYTABLE

Do you understand ?

Vuyiswa Maseko,

Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers."

C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.somee.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/

Re: Stored Procedure Pl/SQL

Civic063-Aug-09 4:59

Civic06

3-Aug-09 4:59

THis syntax is not correct for a oracle stored procedure unless i am doing something wrong

Re: Stored Procedure Pl/SQL

Vimalsoft(Pty) Ltd3-Aug-09 5:06

Vimalsoft(Pty) Ltd

3-Aug-09 5:06

I thought you wanted a SQl example , but am worried because you posted here without using google

http://www.google.co.za/search?hl=en&q=create+a+temp+table+in+oracle&meta=&aq=1&oq=Create+a+temp+table+in+[^]

Please don't do this again, its against the Forums policy. i forgive you for that. Smile | :)

Re: Stored Procedure Pl/SQL

Civic063-Aug-09 5:33

Civic06

3-Aug-09 5:33

I tried it but it doesn't seem to work. Also, I just read that in oracle stored procedures you shouldn't create the temp table in the procedure it should exist and then you may use it in the procedure.

but how can it exist in advance.

Re: Stored Procedure Pl/SQL

David Skelly3-Aug-09 6:09

David Skelly

3-Aug-09 6:09

Oracle (PL-SQL) doesn't have temporary tables in the same way as SQL Server (T-SQL). Read up about Oracle Global Temporary Tables. These work in a different way from SQL Server #temp tables, but give you the same end result.

Error in Stored Procedure.

Satish - Developer3-Aug-09 3:29

Satish - Developer

3-Aug-09 3:29

Hi, i have writeen below stored procedure. I will give input as one zipcode and querystr. If there is no record with given zipcode, it has to go for another query. But it is not going in second if condition. When i try to print the query always showing the first one.

--Exec Test '48019','t1.engl,t1.germ,t1.iris,t1.jewi,t1.scot,t1.wels'

ALTER PROCEDURE [dbo].[test]
(
@Zipcode Varchar(50),
@Querystr Varchar(200)
)
AS
Begin
SET NOCOUNT ON

DECLARE @Result VARCHAR(MAX)

Set @Result = 'SELECT TOP 1 WITH TIES theCol FROM (SELECT * FROM Tbl_Origin WHERE Zip_Final =''' + @Zipcode + ''') AS t1 UNPIVOT (theValue FOR theCol IN (' + @Querystr + ')) AS u1 ORDER BY theValue DESC'

IF @Result IS NULL OR @Result = ''
Begin
Set @Result = 'Select Top 1 theCol from Tbl_Origin'
End

--Exec(@Result)
Print @Result
End

G. Satish

Re: Error in Stored Procedure.

Vimalsoft(Pty) Ltd3-Aug-09 4:38

Vimalsoft(Pty) Ltd

3-Aug-09 4:38

Good day Satish

Becacause of time i have, i will not write you a solution , but i will point to a problem

First you use one variable to do all things. Why do you create one variable that will hold the SQl statement and one to store the results
and evauate the result. i think you know what you are doing but you get confused by your code. declare another variable to hold the results after that you must test for only nulls and remove the quotes and try it like this

DECLARE @Result VARCHAR(MAX)
DECLARE @Final_Res VARCHAR(MAX)
Set @Result = (SELECT TOP 1 WITH TIES theCol FROM (SELECT * FROM Tbl_Origin WHERE Zip_Final =@Zipcode ) AS t1 UNPIVOT (theValue FOR theCol IN (@Querystr)) AS u1 ORDER BY theValue DESC)

IF @Result IS NULL 

Set @Result = 'Select Top 1 theCol from Tbl_Origin'

else 

select @Result

Hope this Helps

designing database tables to store data

uglyeyes2-Aug-09 14:57

uglyeyes

2-Aug-09 14:57

Hi! I need to do below note sure how can i design database as web application performance is a key to this

development scenario:

1. organisation adds up available fields (label and input field) that comes from synonym table
2. ability to add extra fields(label and input field)

synonym table as i think might have below cols not sure..

SID, SNAME, ORGID, ORGWGID, datatype
--------------------------------------
1, firstname, null, null, string - generic
2, lastname, null, null,string - generic
3, initialname, 1,1,string - orgid 1 specific
4, givenname,1,1,string
5,fname,2,2,string
6,surname,2,2,string

1. change synonym for existing default fields that will appear in the webform
2. add additional fields as per need for individual organisation (orgid=organisationId, orgwgid=organisation workgroup id)

please comment if my requirement is not clear. I am confused how should i design table as user might want to add extra form field i.e a label and textbox/checkbox/listbox/combo/moneyfield..all 27 datatypes available in sql. now I dont know how to do this as there will be about 20 organisation that might use this web application. thanks in advance.

Re: designing database tables to store data

Henry Minute3-Aug-09 2:09

Henry Minute

3-Aug-09 2:09

I have a cunning plan!

Use two (or possibly more) tables, I haven't completely thought this out. Smile | :)

First table for Generic data.

Second table:

OrganizationID
NameForAdditionalField
TypeForAdditionalField
Length...
etc

I hope that you get the idea. One table contains the 'required' fields and the other table(s) allow you to organise the requirements for each client.

Henry Minute

Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”

Accessing the file of a T-SQL BACKUP call

Uwe Keim2-Aug-09 5:52

Uwe Keim

2-Aug-09 5:52

Trying to provide a backup "button" inside the C# Windows Forms application on a client PC that connects to a SQL Server database, I want to grab the resulting backup file of a call to the BACKUP DATABASE [^] T-SQL function.

Since the BACKUP DATABASE function takes a file path that is relative to the SQL Server itself, I see no reliable way to get the resulting backup file from the client.

My ideal way would be:

1.) Call the BACKUP DATABASE function from my client application.
2.) Specify to backup to a local file (or even better: a C#/.NET stream[^]).
3.) Capture the resulting BAK file from my client application.

Question: Is this possible to achieve?

(I will cross-post this message to the C# forum, since I am unsure whether this is more an ADO.NET topic)

Thanks
Uwe

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Re: Accessing the file of a T-SQL BACKUP call

scottgp2-Aug-09 14:34

scottgp

2-Aug-09 14:34

On the link you included for the BACKUP command documentation, you'll see a section named "Backup History Tables". You can try reading those system tables - it looks like physical_name in the backupfile system table might have what you want.
Scott

Re: Accessing the file of a T-SQL BACKUP call

Uwe Keim2-Aug-09 19:14

Uwe Keim

2-Aug-09 19:14

Thank you, Scott!

I will try to investigate. The idea was to have the user do ZERO configuration, except specifying the connection string. Hopefully I will manage to do.

Cheers
Uwe

Re: Accessing the file of a T-SQL BACKUP call

Vimalsoft(Pty) Ltd3-Aug-09 4:50

Vimalsoft(Pty) Ltd

3-Aug-09 4:50

Good Day Uwe

Someone asked a very same questions weeks ago and i have given an answer. please search anything by me here on CP.

Re: Accessing the file of a T-SQL BACKUP call

Uwe Keim3-Aug-09 6:00

Uwe Keim

3-Aug-09 6:00

Thanks!

If found this one [^] and several others [^].

But seem to have no match Frown | :-(

Anyway, I keep searching for a match Smile | :)

Join performance

Xmen Real 1-Aug-09 15:26

Xmen Real

1-Aug-09 15:26

I'm a bit confuse in following comparision

select * from table1 t1 join table2 t2 on t1.ID=t2.ID where t1.ID>5

select * from (select * from table1 where ID>5) t1 join table2 t2 on t1.ID=t2.ID

the second query make sense that it will be faster as its filtering rows before join but I wanna know that does 'where' executes before 'join' (in first query condition) ?

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%^]*IRXD#@GKCQ`R\^SF_WcHbORY87֦ʻ6ϣN8ȤBcRAV\Z^&SU~%CSWQ@#2
W_AD`EPABIKRDFVS)EVLQK)JKQUFK[M`UKs*$GwU#QDXBER@CBN%
R0~53%eYrd8mt^7Z6]iTF+(EWfJ9zaK-iTV.C\y<pjxsg-b$f4ia>

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Re: Join performance

Mycroft Holmes1-Aug-09 23:43

Mycroft Holmes

1-Aug-09 23:43

Try turning on the execution plan and examine the details. I doubt it makes any different at all as SQL interprets the query anyway.

Don't forget you can also have

Select *
From Table1, Table2
where Table1.something = 'value'
 and table1.key = table2.key

I'm pretty sure the execution plan is the same but using the join style makes it more readable and therefore easier to support.

Never underestimate the power of human stupidity
RAH

Re: Join performance

Vimalsoft(Pty) Ltd2-Aug-09 21:46

Vimalsoft(Pty) Ltd

2-Aug-09 21:46

Good Morning Xmen W.K.

1)Select only the Column you want to display

2)The Second Query is a bad Query

3)Do you have indexes on the ID Field ?

Re: Join performance

Xmen Real 3-Aug-09 2:45

Xmen Real

3-Aug-09 2:45

why select only one column if I need all of 'em...I know in that case ID column will appear twice as it will from both tables but its just an example...

and why second is bad ?

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Re: Join performance

Vimalsoft(Pty) Ltd3-Aug-09 3:07

Vimalsoft(Pty) Ltd

3-Aug-09 3:07

Xmen

i was wrong i misjudged your statements. The Queries are the same and the execution plan is the same in all parts.

Re: Join performance

Xmen Real 3-Aug-09 3:21

Xmen Real

3-Aug-09 3:21

no problem Wink | ;)

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