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I am using the like statement in searching forms. It works as long as I don't have a column in the SQL DB which haven't NULL as entry.
For example : A car and it's color
Porsche Grey
Honda NULL
BMW Black
SELECT .... WHERE TYP LIKE 'Porsche%' AND COLOR LIKE '%'
works ! Whole Porsche line
SELECT .... WHERE TYP LIKE '%' AND COLOR LIKE 'Black'
works too. Whole BMWline
but both ...
SELECT .... WHERE TYP LIKE 'Honda%' AND COLOR LIKE '%'
SELECT .... WHERE TYP LIKE 'Honda%'
don't work because Column Color for Honda has a NULL entry. Confusing, isn't it ?
Is this a bug, or something what can be solved ?
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No, not a bug; it can be confusing though.
NULL means "I don't know". You're asking for any colour, but SQL is saying it can't tell if the Honda has a colour (hey, a transparent car!!).
You could try:
SELECT ... WHERE TYP LIKE 'Honda%' AND (COLOR LIKE '%' OR COLOR IS NULL)
I don't know why you're not getting anything for the case where the TYP is specified but not the colour, since that shouldn't cause a problem.
Are you doing a single table query, or is it more complex? If the latter, you might not have results for a different reason, like there being no suitable data (no data in one of the other tables to join, for instance)
Steve S
Developer for hire
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Hi,
I don't know why you're not getting anything for the case where the TYP is specified but not the colour, since that shouldn't cause a problem.
Because there are cases in life where you have to accept nulls. Beside your response I have found a further solution.
Instead TYP I have to write CARS.TYP and CARS.COLOR
CARS is the Table ... and finally it works with the table prefix 
Unbelievable ...
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Vector7 wrote:
Because there are cases in life where you have to accept nulls.
Yes, I know that; I've been using RDBMS for over 20 years 
What I was trying to point out was that if you perform a syntactically correct select statement
SELECT * FROM CARS WHERE TYP = 'Honda%'
it should return rows, regardless of whether any column in the table has a NULL value (apart from TYP, obviously!). (Your original post said it wasn't working). If that doesn't work, it suggests issues other than NULL handling.
Since you 'fixed' it by specifying a table prefix, that suggests the parser is otherwise being slightly confused by the names. What version and SP of SQL Server are you running?
Steve S
Developer for hire
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I have a bunch of scripts in one folder (example: c:\myScripts). How can I execute them all as opposed to loading/running them one by one from Query Analyzer?
Thanks.
Norman Fung
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Thanks. That's a very handy utility. Can you show me what's the format for -r (resource) argument so I dont have so go over the code? This didn't work for obvious reason:
RunSQL -r localhost -f script.sql
I presume "-r" (resource) is a fully construction connection string? I tried:
RunSQL -r "Data Source=localhost,1433;Initial Catalog=MyDB;User ID=sa;Password=testing" -f "test_RunSQL.sql"
I'm getting a System.ArgumentNullException.
Norman Fung
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"The demo application takes two command line arguments. The first is either a -r (for embedded resource) or -f (for a file). The second argument is either the name of the resource, or the name of the file."
So, you use a -r OR a -f but not both
-r is for an embedded resource. The demo also shows how to embed SQL Scripts as resources in your application so that you don't have to rely on external files.
So all you need is:
RunSQL -r script.sql
Do you want to know more?
WDevs.com - The worlds first Developers Services Provider
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for %i in (*.sql) do osql -E %i You might need to use the -U and -P options rather than -E, and you might need to specify -S to run them on another server. If you need to run them in a particular order, remember that NTFS always outputs directory listings in alphabetical order.
Stability. What an interesting concept. -- Chris Maunder
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Dear CPians,
Is there a way to invoke a Web Service from a Stored Procedure?
Thank you,
theJazzyBrain
Excellence is not an act, but a habit! Aristotle
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Anybody knows about this? Any information please!
<italic>Work hard and a bit of luck is the key to success. You don`t need to be genius, to be rich.
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If you fill your database with premium, it runs faster and you get more miles to the gallon.
In other words, what the hell are you talking about ?
Christian
I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer
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I don`t know that databse either. That`s why I ask you guys. Maybe there isn`t any premium database.
<italic>Work hard and a bit of luck is the key to success. You don`t need to be genius, to be rich.
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I see - you've just failed to word your question in a way that makes sense. I'd recommend SQL Server as a database, I think Oracle is the main competitor, and it is utterly crap.
Christian
I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer
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No, no, no. What I meant was, is there any DBMS called "premium".
<italic>Work hard and a bit of luck is the key to success. You don`t need to be genius, to be rich.
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Why would there be ? Have you tried google ?
Christian
I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer
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Christian Graus wrote:
Why would there be ?
Somebody told me that, I don`t know if it`s exist,or maybe I didn`t listen it correctly. He said that it was a database integrated with business application, like accounting application. I tried google, couldn`t find what i`m looking for.
<italic>Work hard and a bit of luck is the key to success. You don`t need to be genius, to be rich.
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Can I copy a OLAP Service cube from one computer to another? Thanks.
<italic>Work hard and a bit of luck is the key to success. You don`t need to be genius, to be rich.
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Hello,
I am storing in an SQL table data including email addresses. When trying to retrieve via the Select function rows including an email address the program traps because the @ character witin the select statement is a reserved symbol for parameters.
How can i select rows in a table based on email addresses, such that the @ symbols is not interpreted as a special symbol but part of a string parameter.
I tried to use "\@" instead of @ but it doesent work.
Any suggestions are most appreciated,
Daniel
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Can you show us your code?? or give us more information?
Where do you execute the SELECT command? how do you build your query?
Off the top of my mind, if you're using .NET, using parametized queries (see SqlCommand class and its Parameters property) should solve your problem.
-- LuisR
Luis Alonso Ramos
Intelectix - Chihuahua, Mexico
Not much here: My CP Blog!
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Dear Luis,
Thank you for your reply.
I have been using visual studio.net form designers to construct a data set object, which included a "SubscribersEmails" table. This table stores one (or more) email addresses a subscriber can use to register.
Following is a code snipplet, which attempts to retrieve one row within the SubscribersEmails table which belong to a specific subscriber (identified by a SubscriberID) and is the row associated with one email address (identified by the anEmailAddress string). Note the SubscribersEmail table includes the columns: SubscriberID and emailAddress.
Dim theEmailRows As DataRow()
theEmailRows = subscriberTableDS.Tables("SubscribersEmails").Select("SubscriberID = " & SubscriberID & "AND emailAddress = " & anEmailAddress)
Since during execution the string anEmailAddress includes the @ sign, the above command fails, complaining about the @ sign.
thanks,
Daniel
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grossd wrote:
theEmailRows = subscriberTableDS.Tables("SubscribersEmails").Select("SubscriberID = " & SubscriberID & "AND emailAddress = " & anEmailAddress)
Since anEmailAddress is a string, you have to use delimiters, in this case single quotes.
....Select("SubscriberID = " & SubscriberID & " AND emailAddress = <big>'</big>" & anEmailAddress & "<big>'</big>")Hope this helps,
-- LuisR
Luis Alonso Ramos
Intelectix - Chihuahua, Mexico
Not much here: My CP Blog!
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Hello Luis,
Thank you!,
It works very well now. That was exactly the problem.
Daniel
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You're very welcome! I'm glad I could help!
-- LuisR
Luis Alonso Ramos
Intelectix - Chihuahua, Mexico
Not much here: My CP Blog!
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