xml - How i can have counter in xquery? -

I'm using XQuery in the present- db and I want to use a counter. For example, I have this code:

  Exquisite version "3.0"; $ S in $ P for $ S: = Data (DOC (Cockat ('/ db / index /', $ P, '.html')) // h1) $$ return as a result of IN $ S & lt; A class = "libraryIndexlink" href = "http://library.net/newindex.aspx?pid=102834&bookID=106201&pageIndex={$P}&language=1#p0" & gt; {$ Result} & lt; / A & gt;   
 I need to post it as follows:  language = 1 # p  counter variable is as follows. For example:  
  language = 1 # p0 "& gt; language = 1 # p1" & gt; I write this code:  
  declare the function local: prod2ndDigit () {$ $ x (0 to 10   
 This code works, But there is a logical error. My second code is:     local: prod2ndDigit ()   
   This code does not work.  
 The final code is:  
  Declare the function locally: prod2ndDigit () {$ x back in (from 0 to 10) $ counter to $ P for $ 351: Counter & gt; {$ X} & lt; / Counter & Data; (Doctor (COCAT ('/ db / INDEX /', $ P, '.HTML ')) // h1) $ s As a result, $ s returns   
 But this code has a logical error. I write this code But this return is the location of an integer in  false :  
  $ C: $ 0 back $ C = $ C + 1    
 
 
 The argument you are using does not apply to functional programming languages ​​such as XQuery Is. I think you want to reinvent it on each  h1  element and want to include a mounting counter it is actually even simpler than you imagine: $ Key in data $ Key For $  
  $ (cockat ('/ db / INDEX /', $ P, '.html')) // h1) Returns & lt; a class = "libraryIndexlink" href = "http://library.net/newindex.aspx?pid=102834&bookID=106201&PageIndex={$P}& language = 1 #p {$ Key - 1} "& gt; {$ Result} & lt; / A & gt;   
  at $ of  statement gives you status, that means you want the counter to start with 0, but always in the XQuery view Position 1 starts at, so we use the code  - 1    
. You have to keep XQuery function calls or variables in curly braces, what you did for  $ P , but  not for local: prod2ndDigit () .  
 This code is  let's $ C: = 0 back to $ C = $ C + 1  return  false  is correct. You are using the  =  operator, which means the equivalent in XQuery. You probably wanted to write an assignment, which is : =  for the operator. Also, it seems that you want to increase the counter. Keep in mind that XQuery is a functional language, as I said earlier , So that you can always  manipulate a variable   you can always create a new  $ counter  variable and the old value of the shadow, but you can use other languages ​​such as Viareb while doing c, Java, Python and so on and in other languages Can not change.  
 I do not mind what you want to achieve with your function  local: prod2ndDigit () . It gives a sequence of items, but I do not see the use case here.