What is the problem with the logic in my UPDATE statement? - sql-server

I would appreciate some help with an UPDATE statement.
I want to update tblOrderHead with the content from tblCustomer where the intDocumentNo corresponds to the parameter #intDocumentNo. But when I run the my statement, the order table is only updated with the content from the first row of the customer table.
What is the problem with my logic?
I use Microsoft SQL Server.
Thanks,
Stefan
UPDATE dbo.tblOrderHead
SET dbo.tblOrderHead.intCustomerNo = #intCustomerNo ,
dbo.tblOrderHead.intPaymentCode = dbo.tblCustomer.intPaymentCode,
dbo.tblOrderHead.txtDeliveryCode = dbo.tblCustomer.txtDeliveryCode,
dbo.tblOrderHead.txtRegionCode = dbo.tblCustomer.txtRegionCode,
dbo.tblOrderHead.txtCurrencyCode = dbo.tblCustomer.txtCurrencyCode,
dbo.tblOrderHead.txtLanguageCode = dbo.tblCustomer.txtLanguageCode
FROM dbo.tblOrderHead
INNER JOIN dbo.tblCustomer ON dbo.tblOrderHead.intOrderNo = #intDocumentNo
Solution
If anyone as stupid as me out there thing the same thing, this is how you solve it:
UPDATE dbo.tblOrderHead
SET dbo.tblOrderHead.intCustomerNo = #intCustomerNo ,
dbo.tblOrderHead.intPaymentCode = dbo.tblCustomer.intPaymentCode,
dbo.tblOrderHead.txtDeliveryCode = dbo.tblCustomer.txtDeliveryCode,
dbo.tblOrderHead.txtRegionCode = dbo.tblCustomer.txtRegionCode,
dbo.tblOrderHead.txtCurrencyCode = dbo.tblCustomer.txtCurrencyCode,
dbo.tblOrderHead.txtLanguageCode = dbo.tblCustomer.txtLanguageCode
FROM dbo.tblOrderHead
INNER JOIN dbo.tblCustomer ON dbo.tblOrderHead.intCustomerNo = dbo.tblCustomer.intCustomerNo
AND dbo.tblOrderHead.intOrderNo = #intDocumentNo

Problem is that, you are not specifying the condition on which the 2 tables tblOrderHead, tblCustomer need to be joined!
you need something like
INNER JOIN dbo.tblCustomer
ON dbo.tblOrderHead.someColumn = dbo.tblCustomer.someColumn
and dbo.tblOrderHead.intOrderNo = #intDocumentNo

Related

SQL Query for list within select where field = value and otherfield = othervalue

I need to fudge an existing SQL Server procedure rather quickly. It's a bit of a hack job but needs must.
I need for the following to return a list of voucher codes and invoice numbers rather than just one row of data where the comment is (in the WHERE clause):
SELECT TOP 10
IH.INH_Voucher AS [ID], IH.COY_ID AS COY_ID,
IH.INH_DateSupInv AS ORD_UpdatedOn,
V.VES_ID, V.VES_IMOnumber, IH.INH_Order,
IH.INH_ID AS ORD_ID, IH.INH_INDID
FROM
InvoiceHDR IH (NOLOCK)
INNER JOIN
VESSACCOMP VA ON IH.COY_ID = VA.COY_ID
INNER JOIN
Vessel V ON VA.VES_ID = V.VES_ID
WHERE
v.VSS_ID IN ('01') AND
(IH.INH_Status >= 20 AND IH.INH_Status <= 40) AND
--IH.INH_Voucher = '170CH' AND IH.INH_SupInv = '1532' NEED LIST
IH.INH_INDID IS NOT NULL
So I would need
Voucher = '1700CH' AND SupInv = '1235' AND
Voucher = '180CH' AND SupInv = '1111' AND
And so on for many matching VoucherCodes and InvoiceCodes.
I hope this is clear?
Thanks.
You can apply the following WHERE clause to your query:::
WHERE
v.VSS_ID IN ('01') AND
(IH.INH_Status BETWEEN 20 AND 40) AND
((IH.INH_Voucher = '170CH' AND IH.INH_SupInv = '1532')
OR (IH.INH_Voucher = '180CH' AND IH.INH_SupInv = '1111'))
AND IH.INH_INDID IS NOT NULL

SQL Query Help - searching on multiple 'pairs' or data

I'm struggling to work out how to do a SQL query on a database that I have.
I have a view (which can be changed) which shows the relationships between the tables.
This creates a view as follows:
What I need to be able to do is search on one or more 'Attribute Pairs'
for example
I want to search for records with:
(
(AttributeName='FileExtension' AND AttributeValue='.pdf')
AND (AttributeName='AccountNumber' AND AttributeValue='ABB001'
)
As you can tell, this is not working as AttributeName cant be two things at once. I have this working with an OR filter, but I want it to find records that have all attribute pairs
SELECT
dbo.SiconDMSDocument.SiconDMSDocumentID,
dbo.SiconDMSAttribute.SiconDMSAttributeID,
dbo.SiconDMSAttribute.AttributeFriendlyName,
dbo.SiconDMSAttribute.AttributeName,
dbo.SiconDMSDocumentAttribute.AttributeValue,
dbo.SiconDMSAttribute.DataType,
dbo.SiconDMSDocumentType.SiconDMSDocumentTypeID,
dbo.SiconDMSDocumentType.DocumentTypeName,
dbo.SiconDMSDocumentType.DocumentTypeFriendlyName,
dbo.SiconDMSModule.SiconDMSModuleID,
dbo.SiconDMSModule.ModuleName,
dbo.SiconDMSModule.ModuleFriendlyName,
dbo.SiconDMSDocument.SiconDMSDocumentTypeModuleID
FROM dbo.SiconDMSDocument
INNER JOIN dbo.SiconDMSDocumentAttribute ON dbo.SiconDMSDocument.SiconDMSDocumentID = dbo.SiconDMSDocumentAttribute.SiconDMSDocumentID
INNER JOIN dbo.SiconDMSAttribute ON dbo.SiconDMSDocumentAttribute.SiconDMSAttributeID = dbo.SiconDMSAttribute.SiconDMSAttributeID
AND
(
(dbo.SiconDMSAttribute.AttributeName = 'Reference' AND dbo.SiconDMSDocumentAttribute.AttributeValue='12345')
OR (dbo.SiconDMSAttribute.AttributeName = 'AccountNumber' AND dbo.SiconDMSDocumentAttribute.AttributeValue='ABB001')
)
INNER JOIN dbo.SiconDMSDocumentTypeModule ON dbo.SiconDMSDocument.SiconDMSDocumentTypeModuleID = dbo.SiconDMSDocumentTypeModule.SiconDMSDocumentTypeModuleID
INNER JOIN dbo.SiconDMSDocumentType ON dbo.SiconDMSDocumentTypeModule.SiconDMSDocumentTypeID = dbo.SiconDMSDocumentType.SiconDMSDocumentTypeID
INNER JOIN dbo.SiconDMSModule ON dbo.SiconDMSDocumentTypeModule.SiconDMSModuleID = dbo.SiconDMSModule.SiconDMSModuleID
WHERE
(dbo.SiconDMSDocument.Deleted = 0)
AND (dbo.SiconDMSDocumentAttribute.Deleted = 0)
AND (dbo.SiconDMSAttribute.Deleted = 0)
AND (dbo.SiconDMSDocumentType.Deleted = 0)
AND (dbo.SiconDMSDocumentTypeModule.Deleted = 0)
AND (dbo.SiconDMSModule.Deleted = 0)
Are there any SQL functions that will allow me to do something like this?
I'm not sure what your complicated query has to do with the question of searching for attribute pairs.
Assuming you want the document ids that have both attributes:
select SiconDMSDocumentID
from yourview y
where (AttributeName = 'FileExtension' AND AttributeValue = '.pdf') or
(AttributeName = 'AccountNumber' AND AttributeValue = 'ABB001'
group by SiconDMSDocumentID
having count(*) = 2;
Or, if the attributes could have multiple values:
having count(distinct AttributeName) = 2

SQL update using join impacting performance

Please help me in tuning below mentioned update statement,
UPDATE t_cust
SET cust_name = td.cust_name,
cust_desc = td.cust_desc
FROM t_cust tc
JOIN t_data_cust td ON tc.cust_nr = td.cust_nr
AND tc.start_validity_date = ISNULL(#execution_date,td.start_validity_date)
AND (td.adj_id = #adj_id OR #adj_id IS NULL)
AND ( td.ln_status = '0')
WHERE td.cust_name <> tc.cust_name
OR td.cust_desc <> tc.cust_desc
Move the WHERE statement into the JOIN conditions.
Otherwise it should run well, if it still doesn't, please provide more information.

Translating a QueryExpression into SQL: what's a Natural join?

I am trying to translate a QueryExpression that is in some existing code into a T-SQL select statement.
I've run across the following statement and I'm having trouble understanding what they mean by a Natural Join:
linkEntity1.JoinOperator = JoinOperator.Natural;
Would this be equivalent to an Inner Join in T-SQL? Googling has not been much help.
Here's the rest of the QueryExpression Code:
QueryExpression query = new QueryExpression();
query.EntityName = "showinfo";
ColumnSet columns = new ColumnSet();
columns.Attributes = new String[] { "company" };
query.ColumnSet = columns;
query.Criteria = new FilterExpression();
query.Criteria.FilterOperator = LogicalOperator.And;
ConditionExpression condition1 = new ConditionExpression();
condition1.AttributeName = "company";
condition1.Operator = ConditionOperator.NotNull;
query.Criteria.Conditions = new ConditionExpression[] { condition1 };
LinkEntity linkEntity1 = new LinkEntity();
linkEntity1.JoinOperator = JoinOperator.Natural;
linkEntity1.LinkFromEntityName = "show";
linkEntity1.LinkFromAttributeName = "showid";
linkEntity1.LinkToEntityName = "showintegration";
linkEntity1.LinkToAttributeName = "showcode";
linkEntity1.LinkCriteria = new FilterExpression();
linkEntity1.LinkCriteria.FilterOperator = LogicalOperator.And;
ConditionExpression condition2 = new ConditionExpression();
condition2.AttributeName = "showend";
condition2.Operator = ConditionOperator.Null;
linkEntity1.LinkCriteria.Conditions = new ConditionExpression[] { condition2 };
query.LinkEntities = new LinkEntity[] { linkEntity1 };
There is no equivalent in SQL Server of a natural join where table intersect is based on column names by the RDBMS.
I'm glad of that because it is at best ambiguous and at worst dangerous. JOINs should be explicit. Examples why:
having a InsertedBy column in both tables (quite common): should we have to prefix with the table name to remove ambiguity?
future DDL that add columns that change JOIN semantics
See
Natural join in SQL Server
SQL Server - lack of NATURAL JOIN / x JOIN y USING(field)
Edit:
It looks like natural join means "don't repeat the column in the output" (like USING in MySQL would do) according to the JoinOperator Enumeration.
If I understand this (debatable!) it's misleading. Especially when I read the "LeftOuter" narrative..
A natural join compares all columns in the two tables that have the same column names. It's equivalent to an inner join with the matching columns explicitly listed.
Yes - the natural join is inner join - so you can write:
select * from tab1, tab2 where tab1.col1 = tab2.col1
as
select * from tab1 inner join tab2 on tab1.col1 = tab2.col1

Update field from another table

Is there a better way to write the following simple SQL Server 2005 update statement? This just seems a bit messy inefficient.
UPDATE QuotationItem
SET Recurring_Cost =
(SELECT TOP (1) Recurring_Cost
FROM Products
WHERE (Remote_ID = QuotationItem.Product_ID))
WHERE (Quotation_ID = 115)
Thanks,
Nick
How About using a join
UPDATE QuotationItem
SET Recurring_Cost = p.recurring_cost
FROM QuotationItem q join Products p on q.Product_ID = p.Remote_ID
WHERE q.Quotation_ID = 115
Is your TOP 1 really needed? If it is, since you don't specify an ordering, you've got pretty random results from your query anyway! If it is not really necessary, this will do:
UPDATE q
SET Recurring_Cost = p.RecurringCost
FROM QuotationItem q
INNER JOIN
Products p
ON p.Remote_ID = q.Product_ID
WHERE q.Quotation_ID = 115

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