cr 9, if ..

i need to use if statements in my formula like:
if a > b then
stringvar c := "abc";

if a > b then
numbervar i := 34;
In CR 9 :
how do i combine these two if statements into one
without getting error?.Have you tried:

if a > b then
stringvar c := "abc";
numbervar i := 34;

coverting conditional statements to sql

hi all

I am building an application where the user enters a conditional statement and then i want to perform some action.

Eg

user input > if customer.name = sandro then send email

My program will read the user input and then constructs an sql statement to retrieve the required info... if the sql returns data then a separate method is invoked.

My problem is to transform this statement into the appropriate SQL...since this need to be constructed at run time and for any type of user input..

The language i am using is java, however i dont expect any code...I was only wondering if someone has any ideas of how this can be done..

Thank you in anticipation.What language are you writing the application in ?|||Originally posted by rnealejr
What language are you writing the application in ?

I am using JAVA...|||What type of user input are you expecting ? - give some examples. What input from the user will the sql statements be based on ?|||Originally posted by rnealejr
What type of user input are you expecting ? - give some examples. What input from the user will the sql statements be based on ?

The users are expected to choose from a form which will display the available table attributes and the conjunctives AND OR and NOT.

eg of the typical input

If customer.name = "sandro" and department.name = "maintence" then send email.

what i need to do is to dynamically generate an sql that extracts the required info (based on the user input)......... if the dataset returned from the generated query contains data then this implies that the conditional part succeeds... and in turn i can invoke a method which sends the email...

Hope this is clear.........

Thank you for your interest

Sandro|||After the user makes the selections just do an executeQuery within java with the string that you create. So you might separate the sql statement into a select, from, where ... strings and combine these and pass to the executeQuery using the parameter selection by the user. By separating the parts of the sql statement you can create reusable components. Do you need to know the contents of the returned result set or just that something exists ? If it is the latter, just do a select count(*) to validate. I am a little unclear as to what your problem is, so I hope this answers your question.|||Originally posted by rnealejr
After the user makes the selections just do an executeQuery within java with the string that you create. So you might separate the sql statement into a select, from, where ... strings and combine these and pass to the executeQuery using the parameter selection by the user. By separating the parts of the sql statement you can create reusable components. Do you need to know the contents of the returned result set or just that something exists ? If it is the latter, just do a select count(*) to validate. I am a little unclear as to what your problem is, so I hope this answers your question.

Thank you very much for your advice...... it s pretty much similar to what i had in mind...

By any chance do u know how i can calculate the genereted query computational complexity? i.e. its order O()

Counting rows by a dynamic SQL statements

I need to count number of record return by a SQL statement. Any idea to do
this?
This is the sample SQL. You can try in Northwind database.
The subquery inside COUNT() expression actually is a dynamic sql which I may
change it anytime. My primary purpose is to get number of record after I
executed a dynamic SQL statement. The query below defintely cannot work
because COUNT() doesn;t take subquery.
At first, I try to use @.@.rowcount which return the number of record. Besides
using @.@.rowcount, any other T-SQL can be used?
DECLARE @.cnt int
SELECT @.cnt=COUNT(
SELECT Customers.ContactName
FROM Customers
INNER JOIN Orders ON Customers.CustomerID = Orders.CustomerID
INNER JOIN [Order Details] ON Orders.OrderID = [Order Details].OrderID
WHERE Customers.Country <> 'USA' AND Customers.Country <> 'Mexico'
GROUP BY Customers.CustomerID, Customers.ContactName, Customers.Address,
Customers.City, Customers.Country
HAVING (SUM([Order Details].UnitPrice*[Order Details].Quantity))>1000
)You can specify your SQL query as a derived table and use sp_executesql to
return the count variable as an output parameter. This will return the
count without the accompanying data:
USE Northwind
DECLARE @.cnt int
EXEC sp_executesql
N'
SELECT @.cnt = COUNT(*)
FROM (
SELECT Customers.ContactName
FROM Customers
INNER JOIN Orders ON Customers.CustomerID = Orders.CustomerID
INNER JOIN [Order Details] ON Orders.OrderID = [Order Details].OrderID
WHERE Customers.Country <> ''USA'' AND Customers.Country <> ''Mexico''
GROUP BY Customers.CustomerID, Customers.ContactName, Customers.Address,
Customers.City, Customers.Country
HAVING (SUM([Order Details].UnitPrice*[Order Details].Quantity))>1000
) AS t
',
N'@.cnt int OUT',
@.cnt OUT
SELECT @.cnt
Use a similar technique to get both the resultset and count:
USE Northwind
DECLARE @.cnt int
EXEC sp_executesql
N'
SELECT Customers.ContactName
FROM Customers
INNER JOIN Orders ON Customers.CustomerID = Orders.CustomerID
INNER JOIN [Order Details] ON Orders.OrderID = [Order Details].OrderID
WHERE Customers.Country <> ''USA'' AND Customers.Country <> ''Mexico''
GROUP BY Customers.CustomerID, Customers.ContactName, Customers.Address,
Customers.City, Customers.Country
HAVING (SUM([Order Details].UnitPrice*[Order Details].Quantity))>1000
SET @.cnt = @.@.ROWCOUNT
',
N'@.cnt int OUT',
@.cnt OUT
SELECT @.cnt
Hope this helps.
Dan Guzman
SQL Server MVP
"Joel Leong" <ch_leong@.hotmail.com> wrote in message
news:ehYf%23NOHFHA.3944@.TK2MSFTNGP10.phx.gbl...
>I need to count number of record return by a SQL statement. Any idea to do
>this?
> This is the sample SQL. You can try in Northwind database.
> The subquery inside COUNT() expression actually is a dynamic sql which I
> may change it anytime. My primary purpose is to get number of record after
> I executed a dynamic SQL statement. The query below defintely cannot work
> because COUNT() doesn;t take subquery.
> At first, I try to use @.@.rowcount which return the number of record.
> Besides using @.@.rowcount, any other T-SQL can be used?
>
> DECLARE @.cnt int
> SELECT @.cnt=COUNT(
> SELECT Customers.ContactName
> FROM Customers
> INNER JOIN Orders ON Customers.CustomerID = Orders.CustomerID
> INNER JOIN [Order Details] ON Orders.OrderID = [Order Details].OrderID
> WHERE Customers.Country <> 'USA' AND Customers.Country <> 'Mexico'
> GROUP BY Customers.CustomerID, Customers.ContactName, Customers.Address,
> Customers.City, Customers.Country
> HAVING (SUM([Order Details].UnitPrice*[Order Details].Quantity))>1000
> )
>