Issue with commas in array field.
For starters: I have a column that has an array in it of varchars like this: ,901,902, or ,901,906,902 or ,,,904,903,
The #parameter I use to select this data needs to be multi-value but I cannot get this to work. The #parameter is named #ArrayType and uses values: 901 to 910.
The WHERE statement I use is this:
WHERE vendorContactTypeArray IN (#ArrayType)
However, the report fails because I do not know how to deal with splitting or dealing with commas in the array.
You can use JOIN function to build multivalue parameter like this
=Join(Parameters!ParameterName.Value)
Related
I have to write a stored procedure where I want to set values for a variable called colorId using IN operator, the parameter can be a list of integer ids or no ids. I am wondering what should be the type of variable in the stored procedure?
where color_id IN (1,2,3,4);
Thanks for the help!
If you send a string like '1,2,3,4' as a single parameter, the query will run as if you had done this:
where color_id IN ('1,2,3,4');
The way MySQL does implicit type casts to integer, this converts the value to an integer using only the leading digits, and ignores everything after the first comma. So it will really run as if you had done this:
where color_id IN (1);
There is no way to "remove" the quotes. The point of query parameters is that they are not combined with the query until after the SQL parsing is done. Therefore the parameter is fixed as a single string value in that expression. You can't convert a parameter into a list of discrete values, because that would change the syntax of the query.
So you must pass multiple parameters, one for each value in your list. Like this:
...where color_id IN (?, ?, ?, ?);
And use some function in your client application to split the string into multiple parameters and then pass them not as a single string value, but as multiple integer values.
Some people try to use tricks like using MySQL's FIND_IN_SET() function, but I don't recommend this, because it cannot be optimized with any index.
You tagged this question stored-procedures from which I infer that you are trying to write a procedures that accepts a string of comma-separated integers and use it in an IN() predicate. This is more inconvenient to do in a stored procedure than in any other programming language, because MySQL's stored procedure language doesn't support arrays or good functions for splitting strings or counting elements. It can be done with enough effort, but the code is awful and you will quickly wish you were using any other language.
Your can pass parameter value like this - '1,2,3,4' and FIND_IN_SET function will be able to search in the provided string:
SELECT *
FROM colors
WHERE FIND_IN_SET(color_id, param); # param --> '1,2,3,4'
i have a code in sql for string comparison which takes two parameters as input works upon it and returns a result. both of the parameters are words, i want to change the parameter from a single word to a database column. how do i do that?
say for example in java its like storing the data in an array and than passing the whole array. can something like this be done in sql?
You can use the Select query for passing each value of a particular column from the table into your function.
like this,
SELECT compare_city_name('baroda',t.cityname) from tablename as t
In this query, you pass all cities name from cityname column to the function compare_city_name one by one.
Pass it as a VARCHAR, then build the query with "prepare" and "execute" it.
I'm just starting developing reports in SSRS and would appreciate some help with this issue if possible! I'm selecting a dataset from a Dynamics database and want to then pass them to a SQL Server stored procedure referenced in another dataset to retrieve data from another database. I have created a report parameter and set it to Allow multiple values and to retrieve its values from a query and set it to the field that I want to retrieve.
The dataset would look like this:
U1234
U5678
U6789
In the dataset that uses the stored procedure I have set up a parameter, #pnum, and in the Parameter Value field I have created an expression using the Join statement like this:
Join(Parameters!pnum.Value, ", ")
When this gets passed to the stored proc it seems to be passing a string formatted like this:
'U1234, U5678, U6789'
Whereas what I would like to achieve is this:
'U1234', 'U5678', 'U6789'
so that I can use them in an IN statement. Is there a way of doing this within SSRS?
Many Thanks!
To anyone else experiencing this issue, the assumption made in the question on how the values are passed to the stored procedure and how they can be used are incorrect.
The value passed from the join expression would be formatted as such, without single quotes at the start and end:
U1234, U5678, U6789
Further to this, when passed to a stored procedure as a single string this can only be used as an in list by using dynamic SQL.
To parse out and filter on the passed values, the string will need to be split on the delimiter and inserted into a table (temporary or otherwise) to be joined to.
A suitable splitting can be found here (though others exist that may better suit your needs) utilising logic as follows:
declare #xml as xml,#str as varchar(100),#delimiter as varchar(10)
set #str='A,B,C,D,E'
set #delimiter =','
set #xml = cast(('<X>'+replace(#str,#delimiter ,'</X><X>')+'</X>') as xml)
select N.value('.', 'varchar(10)') as value from #xml.nodes('X') as T(N)
If you don't have to pass the values to a stored procedure and are using hardcoded datasets (Shared or not) you can actually directly use the parameter value without additional processing either in the query or by adding a join expression to the parameter value in the report:
select cols
from tables
where cols in(#MultiValueParameterName)
You have to add an extra field with the value wrapped in quotes.
Like this:
SELECT field1 AS display, '''' + field1 + '''' AS value
I am using SSRS 2008 R2. And found situation which seems to me a bug.
I have a shared dataset -
SELECT 'value1' AS Value
UNION
SELECT 'value''2'
I bind this DS to multivalue parameter. When I check only value'2 from multivalue drop down - I see that in SQL Profiler such parameter is passed
#Value=N'value''2' -- Two single quotes
When I check both values in profiler I see
#Value=N'value1,value''''2' -- Four single quotes
My Procedure treats first case correctly.
It seems to me that escape happens twice - first for every value, second for whole string?
Does anyone know the source of such behaviour, Thx in advance!
Here is the same thread on MS
I experienced a very similar problem - the weirdest part, as you've seen, is that it worked when one parameter was selected but not for multiple parameters.
Anyway, I solved this by passing the parameter to the stored procedure slightly differently - in the Parameters section of the dataset use the following expression:
=Join(Parameters!Value.Value, ",") substituting your parameter name as appropriate.
This effectively will still pass the same comma delimited string of values but for some reason seems to handle the quotes correctly.
I am trying to pass a parameter to a query, rather than write copious text I have narrowed it down to this simple explanation.
The frament I am trying to insert into is
where pkw_0.keyword in (:kwd)
I have used a String[] to construct a string of the form vals="'AVal','BVal'" which I pass to the query using setParameter("kwd",vals); The query returns zero results. However if I construct the query by hand and use the mysql console the query returns 1 result which is expected.
So I am assuming that either a single string is incorrect for the parameter or there is some conditioning of the values that I need to do prior to passing them via the setParameter call.
Each parameter can only represent a single literal value. You will need to create multiple placeholders in your prepared statement (one for each value) and then provide each value to MySQL as a separate parameter.