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Tough SQL Query.

My SQL string is kind of wierd one.
In my application, I need to select things from an
unknown name table. But I know the table name before the
SQL command is executed.

For instance,
Dim varname as string = 'one of my variable. It's part of
the table name.

Dim t1 as String = varname+ "0000"
Dim cmdstr as string ="Select Name, Addr from t1 where
Name = ?"
cmdstr.paramete rs.add("Name", odbctype(char), 50)


I use a string concaticate method and got error.
"Cannot find table t1".

Can some one tell me how to do that ?

Nov 20 '05 #1
28 3909
Try this:

Dim t1 as String = varname+ "0000"
Dim cmdstr as string ="Select Name, Addr from " + t1 + " where Name = ?"
cmdstr.paramete rs.add("Name", odbctype(char), 50)

I'm still new at .NET syntax, so the concats may have to occur in their own
line.
You could also do a .replace on the string.

"Arial" <Ar********@yah oo.com> wrote in message
news:2b******** *************** *****@phx.gbl.. .
My SQL string is kind of wierd one.
In my application, I need to select things from an
unknown name table. But I know the table name before the
SQL command is executed.

For instance,
Dim varname as string = 'one of my variable. It's part of
the table name.

Dim t1 as String = varname+ "0000"
Dim cmdstr as string ="Select Name, Addr from t1 where
Name = ?"
cmdstr.paramete rs.add("Name", odbctype(char), 50)


I use a string concaticate method and got error.
"Cannot find table t1".

Can some one tell me how to do that ?

Nov 20 '05 #2
Use the & operator for concatenating strings:

Dim t1 As String = strVarName & "0000"
Dim cmdstrAs String = "SELECT Name, Addr FROM " & t1 & " WHERE Name = ?"

Also, what does this line
cmdstr.paramete rs.add("Name", odbctype(char), 50) do?

The String object has no such property/method.

--
HTH,
-- Tom Spink, Über Geek

Please respond to the newsgroup,
so all can benefit

"Maybe it's a game called 'Punish the User'"
"Richard Brown" <rb****@easylif t.org> wrote in message
news:eF******** ******@TK2MSFTN GP10.phx.gbl... Try this:

Dim t1 as String = varname+ "0000"
Dim cmdstr as string ="Select Name, Addr from " + t1 + " where Name = ?"
cmdstr.paramete rs.add("Name", odbctype(char), 50)

I'm still new at .NET syntax, so the concats may have to occur in their own line.
You could also do a .replace on the string.

"Arial" <Ar********@yah oo.com> wrote in message
news:2b******** *************** *****@phx.gbl.. .
My SQL string is kind of wierd one.
In my application, I need to select things from an
unknown name table. But I know the table name before the
SQL command is executed.

For instance,
Dim varname as string = 'one of my variable. It's part of
the table name.

Dim t1 as String = varname+ "0000"
Dim cmdstr as string ="Select Name, Addr from t1 where
Name = ?"
cmdstr.paramete rs.add("Name", odbctype(char), 50)


I use a string concaticate method and got error.
"Cannot find table t1".

Can some one tell me how to do that ?


Nov 20 '05 #3
Thanks! it works great!

I owe you one!
-----Original Message-----
Try this:

Dim t1 as String = varname+ "0000"
Dim cmdstr as string ="Select Name, Addr from " + t1 + " where Name = ?" cmdstr.paramete rs.add("Name", odbctype(char), 50)

I'm still new at .NET syntax, so the concats may have to occur in their ownline.
You could also do a .replace on the string.

"Arial" <Ar********@yah oo.com> wrote in message
news:2b******* *************** ******@phx.gbl. ..
My SQL string is kind of wierd one.
In my application, I need to select things from an
unknown name table. But I know the table name before the SQL command is executed.

For instance,
Dim varname as string = 'one of my variable. It's part of the table name.

Dim t1 as String = varname+ "0000"
Dim cmdstr as string ="Select Name, Addr from t1 where
Name = ?"
cmdstr.paramete rs.add("Name", odbctype(char), 50)


I use a string concaticate method and got error.
"Cannot find table t1".

Can some one tell me how to do that ?

.

Nov 20 '05 #4
Hi Herfried,

It was a VB question, lol.

t1 = "TableName"
cmdstr = "Blah blah t1 blah blah"

Q: Why is cmdstr wrong?
A: Oops. I havn't learnt how to concatenate strings!!

Btw, it's the weekend again - go and have some fun. :-)

No, I mean some <different> fun! ;-D

Regards,
Fergus
Nov 20 '05 #5
You should be using & instead of +, I hope.

--
HTH,
-- Tom Spink, Über Geek

Please respond to the newsgroup,
so all can benefit

"Maybe it's a game called 'Punish the User'"
"Arial" <ar********@yah oo.com> wrote in message
news:33******** *************** *****@phx.gbl.. .
Thanks! it works great!

I owe you one!
-----Original Message-----
Try this:

Dim t1 as String = varname+ "0000"
Dim cmdstr as string ="Select Name, Addr from " + t1

+ " where Name = ?"
cmdstr.paramete rs.add("Name", odbctype(char), 50)

I'm still new at .NET syntax, so the concats may have to

occur in their own
line.
You could also do a .replace on the string.

"Arial" <Ar********@yah oo.com> wrote in message
news:2b******* *************** ******@phx.gbl. ..
My SQL string is kind of wierd one.
In my application, I need to select things from an
unknown name table. But I know the table name before the SQL command is executed.

For instance,
Dim varname as string = 'one of my variable. It's part of the table name.

Dim t1 as String = varname+ "0000"
Dim cmdstr as string ="Select Name, Addr from t1 where
Name = ?"
cmdstr.paramete rs.add("Name", odbctype(char), 50)


I use a string concaticate method and got error.
"Cannot find table t1".

Can some one tell me how to do that ?

.

Nov 20 '05 #6
Hello,

"Fergus Cooney" <fi******@tesco .net> schrieb:
It was a VB question, lol.

t1 = "TableName"
cmdstr = "Blah blah t1 blah blah"

Q: Why is cmdstr wrong?
A: Oops. I havn't learnt how to concatenate strings!!

Btw, it's the weekend again - go and have some fun. :-)

No, I mean some <different> fun! ;-D


Today (yesterday) I was on "Mac Styria Tour" with some friends. We visited
all 20 McDonals's restaurants in our district (Styria).

;-)))

--
Herfried K. Wagner
MVP · VB Classic, VB.NET
http://www.mvps.org/dotnet
Nov 20 '05 #7
Hello,

"Tom Spink" <th**********@n tlworld.com> schrieb:
You should be using & instead of +, I hope.


Mega-LOL.

--
Herfried K. Wagner
MVP · VB Classic, VB.NET
http://www.mvps.org/dotnet
Nov 20 '05 #8
Hi Herfried,

ROFL.

Und jetzt sind Sie gebloaten, ja?

Regards,
Fergus
Nov 20 '05 #9
Hello,

"Fergus Cooney" <fi******@tesco .net> schrieb:
ROFL.

Und jetzt sind Sie gebloaten, ja?


What do you mean by "gebloaten" ?

--
Herfried K. Wagner
MVP · VB Classic, VB.NET
http://www.mvps.org/dotnet
Nov 20 '05 #10

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