Cannot retrieve data from the database

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Cannot retrieve data from the database

rich_a_wms

SSC Enthusiast

Points: 153
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November 26, 2012 at 5:39 pm

#271160

Here is the code I am using to retrieve data that I have seen on the database:

<%
Dim sqlString, cityState, storeTime, RStimes
cityState = "Mountain View, CA"
storeTime = 9
sqlString = "SELECT city_time FROM citytime WHERE city_state='" & cityState & "'"
SET RStimes = Con.Execute( sqlString )
IF NOT RStimes.EOF THEN
storeTime = RStimes("city_time")
END IF
Response.Write sqlString & vbCrLf
Response.Write "storeTime=" & storeTime & vbCrLf
Response.End
%>
Here are the results of the write statements:
SELECT city_time FROM citytime WHERE city_state='Mountain View, CA'
storeTime=9
I know that city_state contains Mountain View, CA and that city_time contains 0. Why am I getting city_time 9 ? I have reviewed the SQL query many times and I'm not seeing any errors.

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matt.bowler SSCrazy Points: 2687 More actions · Answer 1

Is there more than one result that satisfies your where clause?

matt.bowler SSCrazy Points: 2687 More actions · Answer 2

Can you explain what the intention of this piece of code is?

IF NOT RStimes.EOF THEN

storeTime = RStimes("city_time")

END IF

It would seem that the predicate is failing here and your store_time is never changing from the 9 you have set it to at the beginning.

Jeff Moden SSC Guru Points: 1004617 More actions · Answer 3

What do you get for the following???

SELECT *

FROM citytime

WHERE city_state='Mountain View, CA'

;

If the answer is "more than 1 row", then you've probably identified the problem. Look at the data and see if your assumptios about what the citytime should be are actually correct.

As a sidebar, the code you posted is VERY suseptible to SQL INJECTION and should be changed to parameterized embedded SQL instead.

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

rich_a_wms SSC Enthusiast Points: 153 More actions · Answer 4

There is only one result in the table: Mountain View, CA

rich_a_wms SSC Enthusiast Points: 153 More actions · Answer 5

This code sets the storeTime from the table only if the city_state = Mountain View, CA

Otherwise, the storeTime is set to 9 if the cityState value is not found in the table. This is just an example of the code I am using that shows the problem.

rich_a_wms SSC Enthusiast Points: 153 More actions · Answer 6

I have used the literal 'Mountain View, CA' and still receive a storeTime = 9.

There is only one instance of it. Can you give me an example of the second line of your response?

rich_a_wms SSC Enthusiast Points: 153 More actions · Answer 7

I found an extra space after the , and before the state in the city_state column. Problem solved and all is well. Thanks Jeff for taking the time and for your comments.

Sean Lange SSC Guru Points: 286609 More actions Follow · Answer 8

rich_a_wms (11/27/2012)
I found an extra space after the , and before the state in the city_state column. Problem solved and all is well. Thanks Jeff for taking the time and for your comments.

Two things.

1) The solution to your problem is a good example of why you should not store city and state in the same field.

2) Your classic asp appears to be the beginning of a page that will use user input for city_state? The way you have this coded is wide open to sql injection attack. You should NEVER NEVER NEVER execute inputs from the user, especially on a website!!! You need to parameterize your queries, or even better, use stored procs to retrieve your data.

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Cannot retrieve data from the database

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