Warning I'm a Newbie so Sorry if there is anything wrong with the question or the explanation ...
I have a table 'XYZ' with a list of Attachments (OrigFileName) and a field UniqueAttchID that is also on the header table 'ABC' to record the link so you can query which Attachments relate to the record.
I need to bring the results of all records where UniqueAttchID is equal on the Header and add them back into the header 'ABC' a field called 'udAttch' which is a Memo field formatted with a , separator
This is to get around a limitation of the reporting functionality available to me as I can only use an actual field from the Database not a related table.
Current Setup:-
XYZ Table
UniqueAttchID OrigFileName
---------- -------------
18181818181 | Filename1
18181818181 | Filename2
18181818181 | Filename3
18181818182 | Filename1
ABC Table -
Description|Field2|UniqueAttchID|
test item |test |18181818181
Test item 2|test2 |18181818182
Desired result:-
(XYZ table would remain unchanged)
ABC Table -
Description|Field2|UniqueAttchID|udAttch|
test item |test |18181818181 |Filename1, Filename2, Filename3|
Test item 2|test2 |18181818182 |Filename1|
I've tried using COALESCE however this doesn't give me a separate record for each UniqueAttchID just one for all records, and SELECT DISTINCT only produced the first record in OrigFileName
I can then generate a Stored Procedure to run as required and update the record when new files are added as attachments.
Please try:
select
*,
STUFF((SELECT ',' + OrigFileName
FROM XYZ b WHERE b.UniqueAttchID=a.UniqueAttchID
FOR XML PATH(''),type).value('.','nvarchar(max)'),1,1,'') AS [udAttch]
From ABC a
Related
Let’s say I am passing the input as input=2021-01-21,CGT for an sql query. CGT will be the common keyword in the database but the dates keep changing. I want the records which contain CGT and all the other dates except the date mentioned in the input parameter.
Don’t answer it as retrieve all the records that contain CGT and filter it out in Excel as the records for the particular date is huge in number. So I want the other dates which are less in count which can be handled.
Example query :-
select records from tablename where var_name=‘input’;
Based on your question, I assume that this is what you want.
Given:
| input |
---------------
2021-01-21,CGT
2021-01-22,CGT
2021-01-23,CGT
2021-01-25,CGT
2021-01-26,CGT
2021-01-27,CGT
2021-01-28,CGT
If you specify '2021-01-23' you expect to get:
| input |
---------------
2021-01-21,CGT
2021-01-22,CGT
2021-01-25,CGT
2021-01-26,CGT
2021-01-27,CGT
2021-01-28,CGT
You did not specify the database you are using. However, the concept should be similar regardless of the database platform.
SELECT *
FROM sample
WHERE SUBSTRING_INDEX(input,',',1) <> '2021-01-22'
[MySQL]
In [DB2], Given that you wish to pass in the input string and extract
the date, do the following:
SELECT *
FROM sample
WHERE SUBSTRING(input,1, (LOCATE(',',input) - 1)) <> '2021-01-22'
I have data that looks like this:
ID RowType Col_1 Col_2 Col_3 ... Col_n
1 HDR FirstName LastName Birthdate
2 DTL Steve Bramblet 1989-01-01
3 DTL Bob Marley 1967-03-12
4 DTL Mickey Mouse 1921-04-25
And I want to return a table or dataset that looks like this:
ID FirstName LastName Birthdate
2 Steve Bramblet 1989-01-01
3 Bob Marley 1967-03-12
4 Mickey Mouse 1921-04-25
where n = 255 (so there's a limit of 255 Col_ fields)
***EDIT: The data in the HDR row is arbitrary so I'm just using FirstName, LastName, Birthdate as examples. This is why I thought it will need to be dynamic SQL since the column names I want to end up with will change based on the values in the HDR row. THX! ***
If there's a purely SQL solution that is what I'm after. It's going into an ETL process (SSIS) so I could use a Script task if all else fails.
Even if I could return a single row that would be a solution. I was thinking there might be a dynamic sql solution for something like this:
select Col_1 as FirstName, Col_2 as LastName, Col_3 as Birthdate
Not sure if your first data snippet is already in a oracle table or not but it is in a CSV file then you have option during loading to skip headers.
If data is already in table then you can use UNION to get desired result
Select * from table name where rowtype=‘HRD’
union
select * from table name where rowtype=‘DTL’
If you need First Name etc as Column header then you need not to do anything. Design destination table columns as per your requirement.
Sorry, posted an answer but I completely misread that you had your desired column headers as data in the source table.
One trivial solution (though it requires more IO) would be to dump the table data to a flat file without headers, then read it back in, but this time tell SSIS that the first row has headers, and ignore the RowType column. Make sure you sort the data correctly before writing it out to the intermediate file!
To dump to a file without headers, you have to set ColumnNamesInFirstDataRow to false. Set this in the properties window, not by editing the connection. More info in this thread
If you have a lot of data, this is obviously very inefficient.
Try the following using row_number. Here is the demo.
with cte as
(
select
*,
row_number() over (order by id) as rn
from myTable
)
select
ID,
Col_1 as FirstName,
Col_2 as LastName,
Col_3 as Birthdate
from cte
where rn > 1
output:
| id | firstname | lastname | birthdate |
| --- | --------- | -------- | ---------- |
| 2 | Steve | Bramblet | 1989-01-01 |
| 3 | Bob | Marley | 1967-03-12 |
| 4 | Mickey | Mouse | 1921-04-25 |
Oh, well. There is a pure SSIS approach, assumed the source is a SQL table. Here it is, rather sketchy.
Create a Variable oColSet with type Object, and 255 variables of type String and names sColName_1, sColName_2 ... sColName_255.
Create a SQL Task with query like select top(1) Col_1, Col_2, ... Col_255 from Src where RowType = 'HDR', set task properties ResultSet = Full Result Set, on result set tab - set Result Name to 0 and Variable Name to oColSet.
Add ForEach Loop enumerator, set it as ForEach ADO Enumerator, ADO object source variable - set to oColSet, Enumeration mode = Rows in the first table. Then, on the Variable Mappings tab - define as such example (Variable - Index) - sColName_1 - 0, sColName_2 - 1, ... sColName_255 - 254.
Create a variable sSQLQuery with type String and Variable Expression like
"SELECT Col_1 AS ["+#[User::sColName_1]+"],
Col_2 AS ["+#[User::sColName_2]+"],
...
Col_255 AS ["+#[User::sColName_255]+"]
FROM Src WHERE RowType='DTL'"
In the ForEach Loop - add your dataflow, in the OLEDB Source - set Data access mode to SQL command from variable and provide variable name User::sSQLQuery. On the Data Flow itself - set DelayValidation=true.
The main idea of this design - retrieve all column names and store it in temp variable (step 2). Then step 3 does parsing and places all results into corresponding variables, 1 column (0th) - into sColName_1 etc. Step 4 defines a SQL command as an expression, which is evaluated every time when the variable is read. Finally, in the ForEach Loop (where parsing is done) - you perform your dataflow.
Limitations of SSIS - data types and column names should be the same at runtime as at design time. If you need to further store your dataset into SQL - let me know, so I could adjust the proposed solution.
I am having an issue and I'm not sure how to solve it.
I have an SSRS report that pulls from a table. I want a parameter filter to show de-duplicated values based on available options in one of the columns.
So my dataset with a query like:
SELECT * FROM table1 WITH (NOLOCK) WHERE col1 IN (#param)
Then I want a parameter called param that gets its available and default values from col1 in the above data set and I want them to be de-duplicated.
From reading online I learned I have to create a dummy param and use VBA code to de-duplicate that list.
So I have these params:
param_dummy that gets its available and default values from col1 in the above dataset
param that gets a de-duplicate list from param_dummy using Code.RemoveDuplicates
But I'm having an issue with circular logic. param gets its value from param_default which gets its value from the dataset/query which uses param.
How can I solve this?
One thought is to remove the WHERE col1 IN (#param) and instead use a filter on the Tablix table in the SSRS report. This works but I am wondering how efficient it is.
And/or if anyone has any other suggestions I am all ears.
Updated to add more details...
So let us say I have a table in my DB like so:
| id | col1 | col2 |
|----|------|--------|
| 1 | a | hello |
| 2 | b | how |
| 3 | a | are |
| 4 | c | you |
| 5 | d | on |
| 6 | a | this |
| 7 | b | lovely |
| 8 | c | day |
What I want is:
a Tablix to show all the fields from the table
a filter where the user can select between the available dropdowns in col1 (de-duplicated)
a text filter that allows nulls where a user can filter on col2
the parameters will have default values so the table will load on page load
So I have a dataset with a query like so:
SELECT
*
FROM dbo.table1
WHERE col1 IN (#col1options) AND (#col2value IS NULL OR col2 = #col2value)
Then for col1options I would make available and default options be Get values from a query and I would use the above dataset and col1.
But this won't work since the query/dataset depends on col1options which gets its default values from the query/dataset.
I can use a second dataset but that means making multiple calls to the SQL server and I want to avoid that.
I'm not sure I understand your issue so this is a guess...
If you mean you want to be able to filter your data by choosing one or more entries from a specific column in the table, but this column has duplicates and you want your parameter list to not show duplicates then this is what do to.
Create a new report
Add dataset dsMain as SELECT * FROM myTable WHERE myColumn IN (#myParam)
Add dataset dsParamValues as SELECT DISTINCT myColumn FROM myTable ORDER BY myColumn
Edit the #myParam parameter properties and set the available and default values to a query, then choose dsParamValues
Add you table/matrix control and set it's dataset property to dsMain
Found an easier solution.
Follow this link to build the "dummy" hidden parameter, the visible paramter and the de-dupe VBA code
Add a tablix properties filter where param is in the visible / non-hidden parameter from above VBA (FYI double click to add parameter)
Adding via double click will append a (0) at the end, remove the (0)
It should work as expected at that point! You should be able to select one, some or all parameters and your report should update accordingly.
I have a fake_apps table:
id INTEGER
name TEXT
category TEXT
downloads INTEGER
price REAL
I need to return the name and category of the app that has been downloaded the most amount of times.
A possible solution is:
SELECT name, category, max(downloads)
FROM fake_apps;
which will return something like this
name | category | max(downloads)
------------------------------------------
xyz | abc | 100000
Now my question is: is there a way to use max(downloads) to filter the result without displaying it (net: I don't want max(downloads) to be displayed in the resulting table).
Do you mean something like that:
SELECT name, category FROM fake_apps WHERE downloads = (SELECT max(downloads) FROM fake_apps);
I've searched high and low for the answer to this, but I can't figure it out. I'm relatively new to SQL Server and don't quite have the syntax down yet. I have this datastructure (simplified):
Table "Users" | Table "Tags":
UserID UserName | TagID UserID PhotoID
1 Bob | 1 1 1
2 Bill | 2 2 1
3 Jane | 3 3 1
4 Sam | 4 2 2
-----------------------------------------------------
Table "Photos": | Table "Albums":
PhotoID UserID AlbumID | AlbumID UserID
1 1 1 | 1 1
2 1 1 | 2 3
3 1 1 | 3 2
4 3 2 |
5 3 2 |
I'm looking for a way to get the all the photo info (easy) plus all the tags for that photo concatenated like CONCAT(username, ', ') AS Tags of course with the last comma removed. I'm having a bear of a time trying to do this. I've tried the method in this article but I get an error when I try to run the query saying that I can't use DECLARE statements... do you guys have any idea how this can be done? I'm using VS08 and whatever DB is installed in it (I normally use MySQL so I don't know what flavor of DB this really is... it's an .mdf file?)
Ok, I feel like I need to jump in to comment about How do you concat multiple rows into one column in SQL Server? and provide a more preferred answer.
I'm really sorry, but using scalar-valued functions like this will kill performance. Just open SQL Profiler and have a look at what's going on when you use a scalar-function that calls a table.
Also, the "update a variable" technique for concatenation is not encouraged, as that functionality might not continue in future versions.
The preferred way of doing string concatenation to use FOR XML PATH instead.
select
stuff((select ', ' + t.tag from tags t where t.photoid = p.photoid order by tag for xml path('')),1,2,'') as taglist
,*
from photos
order by photoid;
For examples of how FOR XML PATH works, consider the following, imagining that you have a table with two fields called 'id' and 'name'
SELECT id, name
FROM table
order by name
FOR XML PATH('item'),root('itemlist')
;
Gives:
<itemlist><item><id>2</id><name>Aardvark</a></item><item><id>1</id><name>Zebra</name></item></itemlist>
But if you leave out the ROOT, you get something slightly different:
SELECT id, name
FROM table
order by name
FOR XML PATH('item')
;
<item><id>2</id><name>Aardvark</a></item><item><id>1</id><name>Zebra</name></item>
And if you put an empty PATH string, you get even closer to ordinary string concatenation:
SELECT id, name
FROM table
order by name
FOR XML PATH('')
;
<id>2</id><name>Aardvark</a><id>1</id><name>Zebra</name>
Now comes the really tricky bit... If you name a column starting with an # sign, it becomes an attribute, and if a column doesn't have a name (or you call it [*]), then it leaves out that tag too:
SELECT ',' + name
FROM table
order by name
FOR XML PATH('')
;
,Aardvark,Zebra
Now finally, to strip the leading comma, the STUFF command comes in. STUFF(s,x,n,s2) pulls out n characters of s, starting at position x. In their place, it puts s2. So:
SELECT STUFF('abcde',2,3,'123456');
gives:
a123456e
So now have a look at my query above for your taglist.
select
stuff((select ', ' + t.tag from tags t where t.photoid = p.photoid order by tag for xml path('')),1,2,'') as taglist
,*
from photos
order by photoid;
For each photo, I have a subquery which grabs the tags and concatenates them (in order) with a commma and a space. Then I surround that subquery in a stuff command to strip the leading comma and space.
I apologise for any typos - I haven't actually created the tables on my own machine to test this.
Rob
I'd create a UDF:
create function GetTags(PhotoID int) returns #tags varchar(max)
as
begin
declare #mytags varchar(max)
set #mytags = ''
select #mytags = #mytags + ', ' + tag from tags where photoid = #photoid
return substring(#mytags, 3, 8000)
end
Then, all you have to do is:
select GetTags(photoID) as tagList from photos
Street_Name ; Street_Code
west | 14
east | 7
west+east | 714
If want to show two different row concat itself , how can do it?
(I mean last row i want to show from select result. My table had first and secord record)