I have an sql query like the following
select *
from register_bs
INNER JOIN spouse_details ON register_bs.reg = spouse_details.reg
WHERE country NOT IN('Australia', 'USA', 'Germany', 'Canada');
This query is displaying correct values for all fields except the 'id' field, it's giving some random id for every data. for example the below data:
when i click on any button of the above data it is going to edit page with different data like below
because the id got is wrong
As there are 900 columns in my register_bs table, I cant use field alias instead of *. Can anyone please tell me how to correct my statement to get the correct id? Thanks in advance
First execute the below query in server and check the values of ID
SELECT register_bs.ID AS ValidateedID, register_bs.*, spouse_details.*
FROM register_bs INNER JOIN spouse_details ON register_bs.reg = spouse_details.reg
WHERE country NOT IN('Australia', 'USA', 'Germany', 'Canada');
Kindly check if the two tables that you have joined have the same column name for their id.
If yes, specify the table first and then the column of the id you want to retrieve.
e.g. register_bs.id
I have written the following function to display a table consisting of
recipe name, description, cusine , ........ ..., ingredients AND LIKES.
Everything works fine but the likes column doesnot show the no. of likes bu instead sows the no. of ingredients of the recipe
public function rec(){
$ing = inglist::all();
$rcusine=recipecusine::all();
$rtype=recipetype::all();
$rec = DB::table('recipe_list')
->select('recipe_list.recipe_id','recipe_list.Recipe_name',
'recipe_list.Recipe_desc','recipe_list.Recipe_duration',
DB::raw('group_concat(ing_list.Ing_name separator ",") as recipe_ingredients'),
'recipe_cusine.Cusine_name', 'recipe_type.Recipe_type_name','recipe_list.image',
DB::raw('count(likerecipes.likecount) as likes'))
->join('recipe_inglist', 'recipe_list.recipe_id','=','recipe_inglist.Recipe_id')
->join('ing_list', 'recipe_inglist.Ing_id','=','ing_list.ing_id')
->join('recipe_cusine', 'recipe_list.Recipe_cusine_id','=','recipe_cusine.cusine_id')
->join('recipe_type', 'recipe_list.Recipe_type_id','=','recipe_type.Recipe_typeID')
->join( 'likerecipes', 'recipe_list.recipe_id', '=', 'likerecipes.recipe_id')
->where('recipe_list.recipe_id','>=','1')
->groupBy('recipe_list.recipe_id', 'recipe_list.recipe_name','recipe_list.recipe_desc','recipe_list.recipe_duration', 'recipe_cusine.Cusine_name','recipe_type.Recipe_type_name','recipe_list.image' )->get() ;
/* var_dump($rec);
die();*/
return view('recipe', ['ingredients'=>$ing, 'cusine'=>$rcusine, 'type'=>$rtype,'recipe'=>$rec]);
}
the output i get is
and this is my likerecipes table
can anyone help me where i am wrong.
Because of the joins, your data is duplicated through the records. Since the likerecipes table seems to store like votes casted one by one identified by an id field uniquely, I would count the distinct likerecipes.id values per group:
'count(distinct likerecipes.id) as likes'
I would also introduce the distinct to the group_concat() to make sure that multiple like votes do not make the same ingridients appear multiple times:
'group_concat(distinct ing_list.Ing_name separator ",") as recipe_ingredients'
I am trying to group rows in MySQL but end up with a wrong result.
My DB looks like this:
I'm using this query:
SELECT
r_id, va_id,va_klasse,va_periode,
1va_mer,1va_hjem,1va_mot,1va_bil,1va_fit,1va_hand,1va_med,1va_fra,
2va_mer,2va_hjem,2va_trae,2va_bil,2va_sty,2va_mus,2va_med,2va_fra,
3va_mer,3va_hjem,3va_mot,3va_bil,3va_pima,3va_nat,3va_med,3va_fra,
va_lock, va_update
FROM o6hxd_valgfag
WHERE va_klasse IN('7A','7B','7C','8A','8B','8C','9A','9B','9C')
GROUP BY va_id
ORDER BY va_klasse,va_name
This produces a wrong result, where one row is returned with only the first three numbers 123 and not the ones from row two and three.
What I would like is a result where the numbers 123, 321 and 132 are gathered in one line.
I can explain more detailed if this isn't sufficient.
If across those fields there should only be ever one value, you should really have them all in the same record and go about fixing it to insert and update the same record.
Ie I am aware that you database isn't designed correctly
However
To dig you out, you could give this a crack, I suppose.
SELECT
r_id, va_id,va_klasse,va_periode,
MAX(1va_mer),MAX(1va_hjem),MAX(1va_mot),MAX(1va_bil),MAX(1va_fit),MAX(1va_hand),MAX(1va_med),MAX(1va_fra),
MAX(2va_mer),MAX(2va_hjem),MAX(2va_trae),MAX(2va_bil),MAX(2va_sty),MAX(2va_mus),MAX(2va_med),MAX(2va_fra),
MAX(3va_mer),MAX(3va_hjem),MAX(3va_mot),MAX(3va_bil),MAX(3va_pima),MAX(3va_nat),MAX(3va_med),MAX(3va_fra),
va_lock, va_update
FROM o6hxd_valgfag
WHERE va_klasse IN('7A','7B','7C','8A','8B','8C','9A','9B','9C')
GROUP BY va_id
ORDER BY va_klasse,va_name
Your query will not work as intended. Think about this use-case:
what if for row1 (r_id =9), the fields 2va_sty, 2va_mus, 2va_med are not empty and has values?
In such case what should your desired output be? It certainly cannot be the numbers 123, 321 and 132 gathered in one line. Group by is usually used if you want to use aggregate functions executed against a certain field value, in your case va_id.
Not a solution to your problem but i think a better query would be like this (because of the not named columns in the group by clause https://dev.mysql.com/doc/refman/5.5/en/group-by-handling.html):
SELECT
aa.r_id, aa.va_id, aa.va_klasse, aa.va_periode,
aa.1va_mer, aa.1va_hjem, aa.1va_mot, aa.1va_bil, aa.1va_fit, aa.1va_hand, aa.1va_med, aa.1va_fra,
aa.2va_mer, aa.2va_hjem, aa.2va_trae, aa.2va_bil, aa.2va_sty,2va_mus, aa.2va_med, aa.2va_fra,
aa.3va_mer, aa.3va_hjem, aa.3va_mot, aa.3va_bil, aa.3va_pima, aa.3va_nat, aa.3va_med, aa.3va_fra,
aa.va_lock, aa.va_update
FROM o6hxd_valgfag AS aa
INNER JOIN (
SELECT va_id
FROM o6hxd_valgfag
GROUP BY va_id
) AS _aa
ON aa.va_id = _aa.va_id
WHERE aa.va_klasse IN ('7A','7B','7C','8A','8B','8C','9A','9B','9C')
ORDER BY aa.va_klasse, aa.va_name;
I have one table named task_assignment.It has following 6 fields named as:
testId,quesId,evaluatorId,studId and marks
Actually this table is used to store marks for each test including each evaluators marks for each students by question id wise.
I have testId=1, quesId=Q1 and studId=S1 as a input. So, i want to get the following information in the select query.ie,Both evaluators(E1,E2) marks for the given input.
The sql query don't written more than one row for this...I want query output is :20,15 in a single row.
Please guide me to get out of this issue...
I think you won't be able to get your desired output 20, 15, since there is only one record which satisfies your criteria testId = 1, quesId = Q1, studId = S1.
But to answer your question, here's my query:
SELECT GROUP_CONCAT(marks)
FROM task_assignment
WHERE testId = 1
AND quesId = 'Q1'
AND studId = 'S1';
I've tried it in SQL Fiddle.
EDIT 1
If you want to parse the output of the query in your C# code to store them in separate variables, you can use the Split function:
string marks = "20, 15"; //Suppose that this value came from database
int mark1 = Convert.ToInt32(marks.Split(',')[0]);
int mark2 = Convert.ToInt32(marks.Split(',')[1]);
The code is still error-prone depending on the value of the marks variable, just make sure you have validated the value.
This might be unrelated to the question, but still to help you on your task, that's my answer.
First of all I'm rather new to SQL and so even though I believe a similar question was asked in this thread ( SQL Query - Copy Values in Same Table ) I literally can't understand it well enough to utilize the information. For that I apologize.
Now, I have a table that looks something like this:
company id | parameter name | parameter title
P | Parameter One | First Parameter
P | Parameter Two | Second Parameter
P | Parameter Three| Third Parameter
W | Parameter One | NULL
W | Parameter Two | NULL
Except that my table obviously has quite a lot of rows. I already went through filling in all the parameter titles where the company id was 'P' and would like to avoid manually doing the same for those with company id 'W'. My question is what SQL statement (this is in Microsoft SQL Server 2008) can I use to copy the values in the column "parameter title" where the company id is 'P' to the values in the same column where the company id is 'W' and both parameter names match up (W has less parameters than P)?
Using the previously linked thread I was able to come up with the following, but it spits out an error and I know it's not done correctly:
UPDATE COMP_PARAMETER_COPY
SET PARAM_TITLE=(SELECT PARAM_TITLE FROM COMP_PARAMETER_COPY P
WHERE P.COMP_ID = 'P' AND P.PARAM_TITLE=PARAM_TITLE)
WHERE COMP_ID='W'
(I'm playing around with a copy of the table instead of the actual table)
The error I get is "Msg 512, Level 16, State 1, Line 1
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.
The statement has been terminated."
Thank you for your help and advice,
-Asaf
You need to ensure that your subquery is only returning one result. Right now that error message is telling you that you're getting more than one record returned.
UPDATE W
SET PARAM_TITLE = (
SELECT PARAM_TITLE FROM COMP_PARAMETER_COPY P
WHERE P.COMP_ID = 'P' AND P.PARAM_NAME = W.PARAM_NAME
)
FROM COMP_PARAMETER_COPY W
WHERE W.COMP_ID = 'W'
Try giving the above SQL a whirl. This could still give you more than one result, but without knowing what your table looks like and what the data constraints are it's hard to give you something guaranteed to work.
Try adding the DISTINCT keyword to your query:
UPDATE COMP_PARAMETER_COPY
SET PARAM_TITLE=(SELECT DISTINCT PARAM_TITLE FROM COMP_PARAMETER_COPY P
WHERE P.COMP_ID = 'P' AND P.PARAM_TITLE=PARAM_TITLE)
WHERE COMP_ID='W'