I am trying to find out products with duplicate values on the basis of any specific attribute. Suppose I have an attribute MPN, and have to get all the products which are sharing the same MPN. I have designed a query which partially works but I found that it calls few products that were unique with attribute value.
select e.entity_id as ID,n.value as name,e.sku as sku,m.value as mpn from `catalog_product_entity` as e
left join `catalog_product_entity_varchar` as m
on e.entity_id = m.entity_id and m.attribute_id=156
left join `catalog_product_entity_varchar` as n
on e.entity_id = n.entity_id and n.attribute_id=71
group by m.value having count(*)> 1 order by e.entity_id asc
seems my logic is not fair enough to get what i want.
Any database Guru to help me out?
I have resolved this issue by applying another query to filter out the results. this may not be a good solution but it helped me out.
after getting results from above query, I used a foreach loop to find if the attribute value is unique or not.
foreach($QueryCollection as $data){
$query1 = "select * from catalog_product_entity_varchar as cpev where cpev.attribute_id=156 and cpev.value='".$data['mpn']."'";
$IsDuplicate = $_conn2->fetchAll($query1);
if(count($IsDuplicate)>1){
//found this as duplicate
}
}
I have very less products around 200, so it was Ok for me, but I guess this is not good for higher counts.
Related
Hopefully i can explain this well enough. I have a bit of a unique issue where the customer system we use can change a ID in the database in the background based on the products status.
What this means is when i want to report old products we don't use anymore along side active products there ID differs between the two key tables depending on there status. This means Active products in the product table match that of the stock item table with both showing as 647107376 but when the product is no long active the StockItem table will present as 647107376 but the table that holds the product information the id presents as -647107376
This is proving problematic for me when i comes to joining the tables together to get the information needed. Originally i had my query set up like this:
SELECT
Company_0.CoaCompanyName
,SopProduct_0.SopStiStockItemCode AS hbpref
,SopProduct_0.SopStiCustomerStockCode AS itemref
,SopProduct_0.SopDescription AS ldesc
,StockMovement_0.StmOriginatingEntityID AS Goodsin
FROM
SBS.PUB.StockItem StockItem_0
LEFT JOIN SBS.PUB.SopProduct SopProduct_0 ON StockItem_0.StockItemID = SopProduct_0.StockItemID
LEFT JOIN SBS.PUB.Company Company_0 ON SopProduct_0.CompanyID = Company_0.CompanyID
LEFT JOIN SBS.PUB.StockMovement StockMovement_0 ON StockItem_0.StockItemID = StockMovement_0.StockItemID
WHERE
Company_0.CoaCompanyName = ?
AND StockMovement_0.MovementTypeID = '173355'
AND StockMovement_0.StmMovementDate >= ? AND StockMovement_0.StmMovementDate <= ?
AND StockMovement_0.StmQty <> 0
AND StockMovement_0.StockTypeID ='12049886'
Unfortunately though what this means is any of the old product will not show because there is no matching id due to the SopProduct table presenting the StockItemID with a leading -
So from this i thought best to use a case when statement with a nested concat and left in it to bring through the results but this doesn't appear to work either sample of the join below:
LEFT JOIN SBS.PUB.SopProduct SopProduct_0 ON (CASE WHEN LEFT(SopProduct_0.StockItemID,1) = "-" THEN CONCAT("-",StockItem_0.StockItemID) ELSE StockItem_0.StockItemID END) = SopProduct_0.StockItemID
Can anyone else think of a way around this issue? I am working with a Progress OpenEdge ODBC.
Numbers look like numbers. If they are, you can use abs():
ON StockItem_0.StockItemID = ABS(SopProduct_0.StockItemID)
Otherwise a relatively simple method is:
ON StockItem_0.StockItemID IN (SopProduct_0.StockItemID, CONCAT('-', SopProduct_0.StockItemID))
Note that non-equality conditions often slow down JOIN operations.
Using an or in the join should work:
LEFT JOIN SBS.PUB.SopProduct SopProduct_0
ON SopProduct_0.StockItemID = StockItem_0.StockItemID
OR
SopProduct_0.StockItemID = CONCAT("-", StockItem_0.StockItemID)
You might need to cast the result of the concat to a number (if the ids are stored as numbers).
Or you could use the abs function too (assuming the ids are numbers):
LEFT JOIN SBS.PUB.SopProduct SopProduct_0
ON SopProduct_0.StockItemID = abs(StockItem_0.StockItemID)
I am having some trouble with my sql statement.
Here is a picture of the relevant tables:
A product can be in multiple categories.
A single product can have multiple varietycategories (ie: size, color, etc)
a varietycategory can have multiple varietycategoryoptions (ie: small, medium, large)
the table searchcriteria.criterianame loosly relates to varietycategory.category
the table searchcriteriaoption.criteriaoption loosely relates to varietycategoryoption.descriptor.
I get the searchcriteria.criterianame and use that string as the value we want to match with varietycategory.category and we also have to get the various searchcriteriaoption.criteriaoption strings (for that searchcriteria.criterianame) and match that against varietycategoryoption.descriptor for that varietycategory.category.
Here is the sql:
SELECT DISTINCT categories.*, product.*
FROM (categories, product, product_category)
LEFT JOIN varietycategory ON varietycategory.productid = product.id
LEFT JOIN varietycategoryoption ON varietycategoryoption.varietycategoryid = varietycategory.id
WHERE product_category.categoryid=4
AND product.id=product_category.productid
AND categories.category_id=product_category.categoryid
AND (
(varietycategory.category = 'color' AND (varietycategoryoption.descriptor='red' OR varietycategoryoption.descriptor='blue'))
OR
(varietycategory.category = 'size' AND (varietycategoryoption.descriptor = 'small' OR varietycategoryoption.descriptor='medium'))
)
but I get an error:
Unknown column 'varietycategory.id' in 'on clause'
I have tried to figure out what I am doing wrong. I tried simplifying the query a bit (just to try and determine what part of the sql query was causing the problem) to only match the searchcriteria.category string with the varietycategory.category and the query returns the data set correctly.
Here is the working query (this query is simplified and insufficient):
SELECT DISTINCT categories.*, product.*
FROM (categories, product, product_category)
LEFT JOIN varietycategory ON varietycategory.productid = product.id
WHERE product_category.categoryid=4
AND product.id=product_category.productid
AND categories.category_id=product_category.categoryid
AND (varietycategory.category = 'color' OR varietycategory.category = 'size' OR varietycategory.category='shape');
But I also need to be able to match against the varietycategoryoptions as well.
Just to avoid confusion, I am only using searchcriteria to get the field category and use it as a string to match against the varietycategory.category
and I am only using searchcriteriaoption to get the field criteriaoption and use it as a string to match against varietycategoryoption.descriptor
Does anyone know what I am doing wrong with my 1st query?
Please do help as SQL is not expertise.
Thank you!
The error is at:
OR
(varietycategory.category = 'size' (varietycategoryoption.desciptor = 'small' OR varietycategoryoption.descriptor='medium'))
^
|
An operator (AND, OR) is missing here
This has nothing to do with the join syntax, by the way.
Do not mix implicit and explicit joins. Your query should look like:
SELECT DISTINCT c.*, p.*
FROM product_category pc join
categories c
on c.category_id = pc.categoryid join
product p
on p.id = pc.productid join
varietycategory vc
ON vc.productid = p.id
WHERE c.categoryid = 4 AND
vc.category in ('color', 'size', 'shape');
You probably don't need the distinct, but that depends on the data. The left join is unnecessary because you are filtering on the second table in the where.
A simple rule: Never use commas in the from clause. To help, MySQL has scoping rules that can cause queries to break when you mix implicit and explicit join syntax.
The problem was a misspelled field on the table varietycategory, which I named
vcid, when I almost always name my table primary key id's "id".
I was just wondering if I could get some pointers as to where I may be going wrong.
I have been using mysql statements and I am in the process of switching to PDO statements to use with MySQL.
I have been able to get my head around SELECT statements, but I am having a bit of trouble trying to get the insert statement to work.
I have been Googling and tried a couple of different ways to get this to work but to no avail.
This is what I have so far:
$sqlu = $conn->prepare("UPDATE ".PERSON." p
JOIN contact c ON c.personID = p.adbkid
JOIN address a ON a.personID = p.adbkid
JOIN misc m ON m.personID = p.adbkid
JOIN variables v ON v.personID = p.adbkid
SET lastname = :ln
WHERE p.pid = :id");
$sqlu->bindParam(':ln', $ln, PDO::PARAM_STR);
$sqlu->bindParam(':id', $id, PDO::PARAM_STR);
$sqlu->execute();
I have also tried it without using bindParam and using as follows:
$sqlu->execute(array('ln' => $ln, 'id' => $id));
I have also used a '?' instead of ':' and then bound the parameter or used it in the array.
When I hit the update button, I have echoed the query so I can see what is being passed through and this is what I get:
PDOStatement Object ( [queryString] => UPDATE person p JOIN contact c ON c.personID = p.adbkid JOIN address a ON a.personID = p.adbkid JOIN misc m ON m.personID = p.adbkid JOIN variables v ON v.personID = p.adbkid SET lastname = :ln WHERE p.pid = :id ) 1
I just can't see where I am going wrong. Like I say, I have Googled this and come across some answers on here too and I seem to be stuck as to where to go next.
This is a personal project I am working on and I am not looking for someone to figure this out for me, I am just looking for some pointers so I can try to fix and learn myself.
Thanks in advance.
One possibility is that the records do not have matching records in all the tables. You could try using left join. But why are you doing joins at all? Does this work?
UPDATE ".PERSON." p
SET lastname = :ln
WHERE p.pid = :id;
This assumes that lastname is in the Person table, but that seems like a reasonable assumption.
I have gone through everything and it would appear that the echoing of the query is showing the query with the placeholders and it is actually updating the database.
I know this has been asked plenty times before, but I cant find an answer that is close to mine.
I have the following query:
SELECT c.cases_ID, c.cases_status, c.cases_title, ci.custinfo_FName, ci.custinfo_LName, c.cases_timestamp, o.organisation_name
FROM db_cases c, db_custinfo ci, db_organisation o
WHERE c.userInfo_ID = ci.userinfo_ID AND c.cases_status = '2'
AND organisation_name = (
SELECT organisation_name
FROM db_sites s, db_cases c
WHERE organisation_ID = '111'
)
AND s.sites_site_ID = c.sites_site_ID)
What I am trying to do is is get the cases, where the sites_site_ID which is defined in the cases, also appears in the db_sites sites table alongside its organisation_ID which I want to filter by as defined by "organisation_ID = '111'" but I am getting the response from MySQL as stated in the question.
I hope this makes sense, and I would appreciate any help on this one.
Thanks.
As the error states your subquery returns more then one row which it cannot do in this situation. If this is not expect results you really should investigate why this occurs. But if you know this will happen and want only the first result use LIMIT 1 to limit the results to one row.
SELECT organisation_name
FROM db_sites s, db_cases c
WHERE organisation_ID = '111'
LIMIT 1
Well the problem is, obviously, that your subquery returns more than one row which is invalid when using it as a scalar subquery such as with the = operator in the WHERE clause.
Instead you could do an inner join on the subquery which would filter your results to only rows that matched the ON clause. This will get you all rows that match, even if there is more than one returned in the subquery.
UPDATE:
You're likely getting more than one row from your subquery because you're doing a cross join on the db_sites and db_cases table. You're using the old-style join syntax and then not qualifying any predicate to join the tables on in the WHERE clause. Using this old style of joining tables is not recommended for this very reason. It would be better if you explicitly stated what kind of join it was and how the tables should be joined.
Good pages on joins:
http://dev.mysql.com/doc/refman/5.0/en/join.html (for the right syntax)
http://www.codinghorror.com/blog/2007/10/a-visual-explanation-of-sql-joins.html (for the differences between the types of joins)
I was battling this for an hour, and overcomplicated it completely. Sometimes a quick break and writing it out on an online forum can solve it for you ;)
Here is the query as it should be.
SELECT c.cases_ID, c.cases_status, c.cases_title, ci.custinfo_FName, ci.custinfo_LName, c.cases_timestamp, c.sites_site_ID
FROM db_cases c, db_custinfo ci, db_sites s
WHERE c.userInfo_ID = ci.userinfo_ID AND c.cases_status = '2' AND (s.organisation_ID = '111' AND s.sites_site_ID = c.sites_site_ID)
Let me re-write what you have post:
SELECT
c.cases_ID, c.cases_status, c.cases_title, ci.custinfo_FName, ci.custinfo_LName,
c.cases_timestamp, c.sites_site_ID
FROM
db_cases c
JOIN
db_custinfo ci ON c.userInfo_ID = ci.userinfo_ID and c.cases_status = '2'
JOIN
db_sites s ON s.sites_site_ID = c.sites_site_ID and s.organization_ID = 111
I am attempting to update a field on a single table with the results of a sum statement from another table. In order to get the results I have to tie together two tables and sum a qty field in one of those two tables. I then need to set the summed qty to a field in a third table. I've looked around for a solution, and have found some answers, but they weren't super detailed answers and I have been unable to make it work for my situation.
I think I'm fairly close to a solution, but my current MySQL query is unable to run. It is telling me that "Every derived table must have its own alias". Here's my code:
UPDATE `t inventory` i INNER JOIN
(SELECT Sum(p.Qty) AS SumOfQty, p.Category AS Category, p.StockNu AS StockNu
FROM `t purchorderitems` p INNER JOIN `t jobenv` j ON p.`Order Nu` = j.`Auto Number`)
WHERE ((p.PickedUp) Is Null AND (j.`Date In`) Is Null AND (p.StockItem)='Yes' AND p.Return=0 AND p.TradeIn=0 AND ((`Locked`) Is Null Or `TransType`='LW'))
Group By p.Category, p.StockNu) x ON (x.StockNu = i.STOCKNO) AND (x.Category = i.ABR)
SET i.NumHld = x.`SumOfQty`;
In the process of writing this question, I managed to find the solution to my own problem. I was indeed quite close to getting the query to work. Apparently, the only thing I had wrong was that I had placed an extra parentheses after j.`Auto Number`. I removed that parentheses and now the code runs fine.
I thought about not posting since I had managed to figure out my own problem, but since I was having difficulty finding an answer when I searched for this issue, I figured I might as well post my problem and its answer.
Here is the successful code:
UPDATE `t inventory1` i INNER JOIN
(SELECT Sum(p.Qty) AS SumOfQty, p.Category AS Category, p.StockNu AS StockNu
FROM `t purchorderitems` p INNER JOIN `t jobenv` j ON p.`Order Nu` = j.`Auto Number`
WHERE ((p.PickedUp) Is Null AND (j.`Date In`) Is Null AND (p.StockItem)='Yes' AND p.Return=0 AND p.TradeIn=0 AND ((`Locked`) Is Null Or `TransType`='LW'))
Group By p.Category, p.StockNu) x ON (x.StockNu = i.STOCKNO) AND (x.Category = i.ABR)
SET i.NumHld = x.`SumOfQty`;