Regex replace in SQL Server Update Query - sql

I have added a new column to a table and want to prepopulate it.
At the moment I have this:
update Table_A
set packages = 'a:1:{i:0;a:2:{s:4:"name"; s:' + ltrim(str(len(p.name))) + ':"' + p.name + '";'+
's:11:"category_id"; a:1:{i:0;s:1:"0";}}}'
from broker_product as Table_A
join scheme s on Table_A.scheme_id = s.id
join product p on p.id = s.product_ids
where Table_A.packages is null
What I want to do is populate category_id with a value based on the values of a column in product, as opposed to the fixed string that it is now.
An example of what is in product.risks is:
a:2:{i:0;a:5:{s:10:"field_name";s:24:"Gadget Accidental Damage";s:19:"risk_category_value";s:4:"1.00";s:13:"variable_name";s:24:"gadget-accidental-damage";s:11:"description";s:0:"";s:10:"hover_text";s:0:"";}i:1;a:5:{s:10:"field_name";s:32:"Home Emergency Accidental Damage";s:19:"risk_category_value";s:4:"2.00";s:13:"variable_name";s:0:"";s:11:"description";s:0:"";s:10:"hover_text";s:0:"";}}
In this example I would like category_id to be:
a:2:{i:0;s:1:"0";i:1;s:1:"1";}
which is an array of the same length as products.risk, with the values i:0;s:1:"0"; for the size of the array, counting the number of elements in product.risks.
As an example, I am looking for something like this (with correct regex, not the broken stuff I've supplied):
update Table_A
set packages = 'a:1:{i:0;a:2:{s:4:"name"; s:' + ltrim(str(len(p.name))) + ':"' + p.name + '";'
's:11:"category_id"; ' + preg_replace('/a:(\d+):{(i:\d+;)/', 'a:$1:{$2s:1:"0";}', p.risks) + '}}'
from broker_product as Table_A
join scheme s on Table_A.scheme_id = s.id
join product p on p.id = s.product_ids
where Table_A.packages is null

Related

how to use LIKE instead of IN with multiple values?

I want to replace In with Like to make the query work.
SELECT
1 AS coddit, COD_CAT AS cam_cod, DES_CAT AS cam_desc,
LIVELLO_CAT AS livello, COD_CAT_PADRE AS cat_padre,
COD_L1, COD_L2, COD_L3, COD_L4, COD_L5, COD_L6
FROM
dbo.CLASS_ART
WHERE
1=1
AND TIPO_CLASS = 16 --B2B
AND LIVELLO_CAT = '0'
AND COD_CAT IN (SELECT DISTINCT CAT_MERCE.COD_CAT
FROM ART_LIST_PREZZI
INNER JOIN ART_ANA ON ART_LIST_PREZZI.COD_ART = ART_ANA.COD_ART
INNER JOIN CAT_MERCE ON ART_ANA.COD_CAT = CAT_MERCE.COD_CAT
AND ART_LIST_PREZZI.COD_LIST = 'EXPORT_002')
The comparison I would like to do with LIKE otherwise the query doesn't work well
the subquery returns more than one value and it is correct but if I use Like instead of IN I have this error message:
Query return more than 1 values
Using LIKE against a subquery that returns multiple records won't work. A solution would be to turn the IN condition to an EXISTS condition, like:
and exists (
select 1
from ART_LIST_PREZZI
inner join ART_ANA
on ART_LIST_PREZZI.COD_ART = ART_ANA.COD_ART
inner join CAT_MERCE
on ART_ANA.COD_CAT = CAT_MERCE.COD_CAT
and ART_LIST_PREZZI.COD_LIST = 'EXPORT_002'
where COD_CAT like '%' + CAT_MERCE.COD_CAT + '%'
)
Like has to be compared to a single string, so you need to set all your ids on a single string. You can do that using the for xml clause.
(SELECT DISTINCT CAST(CAT_MERCE.COD_CAT AS VARCHAR(32))
FROM ART_LIST_PREZZI
INNER JOIN ART_ANA ON ART_LIST_PREZZI.COD_ART = ART_ANA.COD_ART
INNER JOIN CAT_MERCE ON ART_ANA.COD_CAT = CAT_MERCE.COD_CAT
AND ART_LIST_PREZZI.COD_LIST = 'EXPORT_002'
FOR XML PATH(''))
Now I would delimite your ids by commas, so you don't find false positives, and compare it using like.
AND
(SELECT DISTINCT ',' + CAST(CAT_MERCE.COD_CAT AS VARCHAR(32)) + ','
FROM ART_LIST_PREZZI
INNER JOIN ART_ANA ON ART_LIST_PREZZI.COD_ART = ART_ANA.COD_ART
INNER JOIN CAT_MERCE ON ART_ANA.COD_CAT = CAT_MERCE.COD_CAT
AND ART_LIST_PREZZI.COD_LIST = 'EXPORT_002'
FOR XML PATH('')) LIKE '%,' + COD_CAT + ',%'
This would work, and you would have changed your IN operator with a LIKE operator, but I don't see the point of it, its performance would be worse than your original query.
Use EXISTS:
EXISTS (SELECT 1
FROM ART_LIST_PREZZI LP JOIN
ART_ANA A
ON LP.COD_ART = A.COD_ART JOIN
CAT_MERCE M
ON A.COD_CAT = M.COD_CAT AND
LP.COD_LIST = 'EXPORT_002' AND
CLASS_ART.COD_CAT LIKE M.COD_CAT
)
I assume that the logic you actually want uses wildcards:
CLASS_ART.COD_CAT LIKE CONCAT('%', M.COD_CAT, '%')
If so, it suggests an issue with the data model. Why would two columns with the same name (COD_CAT) need to be joined using LIKE instead of =.

SQL get to select multiple names from select subquery

I am writing select statement in SQL Server. I have to add a select query.
select
acct.AccountID,
acct.Username,
acct.LastNm + ', ' + acct.FirstNm as Name ,
acct.Lastlogin,
acct.email as Email,
(select acct2.FirstNm + ' ' + acct2.LastNm as Name from tblUserAccount acct2
join tblReviewers ra2 on acct2.AccountID = ra2.ReviwerID) as Reviewers
from tblUserAccount acct
I need to get more names from a table called tblReviwers. So 1 user from the tblUserAccount table could be associated with multiple reviews.
The tblReviewers only has 3 column AnalystID, ReviewerID, and Date. When I select on the JOIN between TblUserAccount and TblReviewers on a test AccountID = AnalystID, I can get multiple ReviewerIDs, which their firstname and lastname are located in the tblUserAccount. This is the reason why I use a select subquery
When I run the query, I get the following error
Subquery returned more than 1 value. This is not permitted when the
subquery follows =, !=, <, <= , >, >= or when the subquery is used as
an expression.
I am trying to write a VIEW to get a data.
Any help is greatly appreciated.
A query for a column name can only contain a single record result set. If you have an entry with multiple results causes that error.
I think you are missing disclosure of a possible extra component needed in the reviewers table, the who entered it. This will result in a query similar to the following.
The aliases and relations will appear obvious, but need to be confirmed for your actual structure.
select
EnterBy.AccountID,
EnterBy.Username,
EnterBy.LastNm + ', ' + EnterBy.FirstNm as Name ,
EnterBy.Lastlogin,
EnterBy.email as Email,
ReviewBy.FirstNm + ' ' + ReviewBy.LastNm as ReviewerName
from
tblReviewers r
tblUserAccount EnterBy
on r.AccountID = EnterBy.AccountID
tblUserAccount ReviewBy
on r.ReviwerID = ReviewBy.AccountID
REVISION BASED ON ADDITIONAL DATA
Based on providing the analystID on who entered, you should be good with
select
EnterBy.AccountID,
EnterBy.Username,
EnterBy.LastNm + ', ' + EnterBy.FirstNm as Name ,
EnterBy.Lastlogin,
EnterBy.email as Email,
STUFF(( Select
', [' + ReviewBy.LastNm + ', ' + ReviewBy.FirstNm + '] ' AS [text()]
From
tblReviewers r
JOIN tblUserAccount ReviewBy
on r.ReviwerID = ReviewBy.AccountID
where
r.AnaylstID = EnterBy.AccountID
For XML PATH('')), 1, 2, '' ) as AllReviewers
from
tblUserAccount EnterBy
You cannot have a column that contains multiple rows in a single result set, it just doesn't make sense from SQL perspective. Hence the error.
You should JOIN the tblReviewers table instead of subselecting it. That will yield all Reviewers. Then, JOIN again on the tblUserAccount table to get the name of the Reviewer, and you are all set.
SELECT
acct.AccountID,
acct.Username,
acct.LastNm + ', ' + acct.FirstNm as Name ,
acct.Lastlogin,
acct.email as Email,
acct2.LastNm + ', ' + acct2.FirstNm as ReviewerName ,
FROM tblUserAccount acct
JOIN tblReviewers revi
ON on acct.AccountID = revi.ReviewerID
JOIN tblUserAccount acct2
ON on acct2.AccountID = revi.AnalystID
Starting from Sql Server 2017, You can use something like STRING_AGG function, which combines values from multiple rows into a single string.
Then, your Reviewers column in your query might look like this:
(select STRING_AGG(Name, ',') from
(select acct2.FirstNm + ' ' + acct2.LastNm as Name from tblUserAccount acct2
join tblReviewers ra2 on acct2.AccountID = ra2.ReviwerID
where ra2.AnalystID = acct.AccountID)
) as Reviewers
In this case, names(first name + last name) of the reviewers for the current user will be separated by commas.
Subselects in select lists can only be used to return one value.
In your case, use joins
SELECT
a.AccountID,
a.Username,
a.LastNm + ', ' + a.FirstNm as Name ,
a.Lastlogin,
a.email as Email,
b.LastNm + ', ' + b.FirstNm as ReviewerName
FROM
tblUserAccount a
LEFT JOIN tblReviewers r ON a.AccountID = r.AnalystID
INNER JOIN tblUserAccount b ON r.ReviewerID = b.AccountID
I also used a LEFT JOIN to the reviewers table, in case there is no reviewer defined for an analyst.
You will get several rows per analyst, if more than one reviewer is assigned to it. Usually I solve this problem in the front-end by making a report that puts the main data in a group header (the analyst) and the related date (the reviewers) in the detail section of the report.
Starting with SQL Server 2017, you can also use the STRING_AGG function to concatenate the values of string expressions.
SELECT
a.AccountID,
a.Username,
a.LastNm + ', ' + a.FirstNm AS Name ,
a.Lastlogin,
a.email AS Email,
STRING_AGG(
( SELECT b.LastNm + ' ' + b.FirstNm
FROM
tblReviewers
INNER JOIN tblUserAccount b ON r.ReviewerID = b.AccountID
WHERE
r.AnalystID = a.AccountID ),
', ') AS ReviewerName
FROM
tblUserAccount a
This allows you to return more than one reviewer in one field.

Merging multiple rows of data into same column

I would like to create a table of job ids and a column listing all the different job categories that get matched up, but concatenated into the same column. As an example, right now job 82041 has two categories, but now is returning two rows. I would like for it to say "Retail, Sales Associate", all in one field.
The code that I tried is below, can anybody tell me what I am doing wrong?
EXAMPLE:
jobOrderID (No column name)
82027 Motion Graphics
82029 Other
82030 Product Designer
82041 Retail
82041 Sales Associate
82069 Social Media
EXAMPLE CODE:
select JobOrder.jobOrderID ,
stuff((select distinct ', ' + cast(Category.occupation as nchar(30))
from Category
where Category.categoryID = JobOrderCategories.categoryID
for xml path ('')),1,1,'')
from JobOrder
left outer join JobOrderCategories
on JobOrder.joborderid = JobOrderCategories.jobOrderID
left outer join Category
on Category.categoryID = JobOrderCategories.categoryID
where JobOrder.dateAdded > '2017-5-2' and JobOrder.dateAdded < '2017-5-3'
and joborder.isDeleted = 0
order by joborder.dateAdded asc
Figured it out by altering the left joins
select
JobOrder.jobOrderID,
stuff((select distinct ', ' + cast(Category.occupation as varchar(30))
from Category
left outer join JobOrderCategories on (Category.categoryID = JobOrderCategories.categoryID and joborder.jobOrderID = JobOrderCategories.joborderid)
where Category.categoryID = JobOrderCategories.categoryID
for xml path ('')),1,1,'')
from JobOrder
where JobOrder.dateAdded > '2017-5-2' and JobOrder.dateAdded < '2017-5-3'
and joborder.isDeleted = 0

Concatenated where clause

I cant get this SQL query to update my database activties table. This is my query:-
UPDATE Activities
SET CJSID = CJSEmpNum.StaffNumber
FROM CJSEmpNum
Where Activites.Name = CJSEmpNum.Surname + " " + CJSEmpNum.Forename
I think my problem is the where clause. In activities number Name is stored as Smith John and in CJSEmpNum it is stored in two seperate columns Surname and Forename.
Try this :
UPDATE A
SET CJSID = C.StaffNumber
FROM Activities A
INNER JOIN CJSEmpNum C ON A.Name = RTRIM(LTRIM(C.Surname)) +' '+ RTRIM(LTRIM(C.Forename))
Have you tried making this an inner join? Something like...
UPDATE
A
SET
A.CJSID = CJSEmpNum.StaffNumber
FROM
CJSEmpNum
INNER JOIN
Activities A ON A.Name = CJSEmpNum.Surname + ' ' + CJSEmpNum.Forename

MS SQL Conditional Join

I have a SQL Query :
SELECT * FROM Customer c
LEFT JOIN Invoice I ON I.InvcNum = C.Cust_InvcNum
some thing changed and the join does not work because there is no consistency in the data in the 'Cust_InvcNum'. So now when it does not find the record for the join or if it is null it needs to check for another condition.
LEFT JOIN Invoice I ON I.InvcNum = (SELECT p.InvcPrefix FROM Prefix WHERE p.DealerID = I.DealrID ) + '-' + I.InvcNum
second join I do works but it is taking too long for it get me data. Is there any other way to do this.
Earlier it used to be
Join on I.InvcNum = C.Cust_InvcNum
both the columns has the same data like DlrCd-InvcNum i.e both the columns 1234-A789
but not it could match on the above data or now the column 'InvcNum' in invoice table
can be populated like Dlrd-InvcNum or InvcPrefix-InvcNum
So InvcNum = 1234-A789 but CustNum = I94-A789
so we need to check if the for InvoicePrefix-InvcNum
SELECT *
FROM Customer c
LEFT JOIN (
SELECT i.InvcNum, p.InvcPrefix + '-' + I.InvcNum AS pInvcNum
FROM Invoice i LEFT JOIN Prefix p ON i.DealrID = p.DealrID
) ip ON c.Cust_InvcNum = CASE WHEN c.Cust_InvcNum = ip.InvcNum
THEN ip.InvcNum
ELSE ip.pInvcNum END