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Questions tagged [cross-apply]

The tag has no usage guidance.

0
votes
1answer
37 views

Refactor SQL to left join on TVF requiring input variable

I would like to join two tables and a table-valued function. The TVF take a date as input variable. The expected output is: Date, LimitName, Exposure, ProductValueEligible, ProductValueNonEligible ...
7
votes
1answer
108 views

How to get cross apply to operate row by row on a view?

We have a view that is optimized for single item queries (200ms no parallelism): select * from OptimizedForSingleObjectIdView e2i where ObjectId = 3374700 It also works on small sets of ...
2
votes
1answer
154 views

Refactoring subquery to JOIN and CROSS APPLY, get only one row for each record in parent table

Given the following query: SELECT p.ProductName, CASE WHEN EXISTS(SELECT 1 FROM Product WHERE ProductSuperID = p.ProductSuperID AND HasImage = 1) THEN 1 ELSE 0 END ...
1
vote
1answer
58 views

is there a way to improve this query by not re calculating functions? cross apply?

when I set up replication I like to take a count of each table in the publisher, then I go to the subscriber I do the same thing in order to compare both pictures. this is the picture from the ...
5
votes
3answers
1k views

Using CROSS APPLY OPENJSON causes Azure to hang

I have a table with around 8 million rows with a schema of: CREATE TABLE [dbo].[Documents]( [Id] [uniqueidentifier] NOT NULL, [RemoteId] [int] NOT NULL, [Json] [nvarchar](max) NULL, [...
4
votes
1answer
156 views

Convert columns into rows for use with indexed/materalized view

I'd like to convert columns into rows for a given SQL Server table. The table effectively is an audit table; it stores a given old and new value in separate columns for a given user attribute (e.g. ...
3
votes
1answer
327 views

Speed Up Cross Apply Without Index Hint

I have a very small table with 12 rows in it that can be created with the following statement: CREATE TABLE dbo.SmallTable(ScoreMonth tinyint NOT NULL PRIMARY KEY, ...
0
votes
0answers
215 views

Using clustered columnstore indexes in conjunction with non-clustered columnstore indexes

Table A has approximately 500 million records in it and is of the form similar to the following | ID | FirstName | LastName | MiddleName | ------------------------------------------ | 1 | John |...
3
votes
2answers
149 views

Return batches of rows based on one row

Say I have a table like this in SQL Server 2008: id | name | qty ------------------- 1 | john | 1 2 | bill | 3 3 | mary | 2 4 | jill | 5 I would like to query this ...
6
votes
3answers
1k views

How does this derived table with cross apply work?

I borrowed some code on how to compact and uncompact a string of diagnosis codes in order to build a bridge table for my data warehouse. It works well. However, I just do not understand how it is ...
2
votes
1answer
1k views

Performance improvement Outer Apply

I have a query which runs little slower. SELECT b.BreakdownClassificationId, k.IsinCode, k.SedolCode, ClassificationDate, NAME, InstrumentType, ...
5
votes
1answer
4k views

Using CROSS APPLY with GROUP BY and TOP 1 with duplicate data

I have a table that contains Status information about Product items over time. Each row has a Modified DATETIME. I want to get the latest Status row, using the MODIFIED field, for each ProductNumber ...
1
vote
1answer
621 views

Issue with SUM OVER PARTITION BY in conjunction with GROUP BY

I am getting a typical group by error that one would see when a field is not in a group by or an aggregate in the select. Column 'v.EDTAmount' is invalid in the select list because it is not ...
4
votes
1answer
1k views

While using Cross Apply, can I force “empty” records to appear?

I have a query that is working fantastically, except that I would like to force some records to appear. I am using SqlServer 2016, and this query will ultimately be used in a VIEW and used by SSRS ...
1
vote
1answer
94 views

Where and how to add selective totals in SSRS

I need to get some totals output in SSRS that I am having difficulty putting together. I am not sure if I should do the totals for the below query within the query, or in SSRS. The output is going to ...
1
vote
2answers
92 views

TSQL help my feeble mind grasp Pivot/Unpivot on two columns

I've been trying to wrap my feeble mind around this one for some time, but I am having difficulty. I have looked at a few other examples like this SE.DBA answer, but I am having difficulty applying it ...
4
votes
1answer
129 views

Does the apply operator use row by row processing?

I'm working with 2 of the same datasets. However, one is derived from a temp table and the other is from a derived table (cross apply operator). The derived table takes much longer to process and it ...
0
votes
1answer
1k views

CROSS APPLY query with CASE and running totals [closed]

I'm trying to make this business logic make sense, but I'm not having any luck. The rule is I can have a sale with discounts from percentage and value. But the value is to be subtracted after ...
0
votes
1answer
51 views

How to use reference to another table in aggregate function

I have following easy-to-explain task: we have a table, and we should calculate total count of rows grouped by columns. Column number is fixed so we write: SELECT [GroupId] = cr.[GroupId], [...
7
votes
1answer
731 views

Cross Apply Fails When DateTime Added

In trying to achieve a Pivot-ed goal for a two row data table into one row, my first thought was to use a Cross Apply. By using the Cross Apply one can identify/generate each of the rows with a ...
1
vote
2answers
2k views

How to keep row ordering with DISTINCT command or how to add row number to cross apply

I have problem that after distinct, order direction of Variable column change. Here is example Data Source DECLARE @Table TABLE ( FirstName NVARCHAR(255), LastName NVARCHAR(255), ...
3
votes
1answer
239 views

Translate query using APPLY to run under compatibility level 80

I want to use the following query: SELECT SUBSTRING(qt.TEXT, ( qs.statement_start_offset / 2 ) + 1, ( ( CASE qs.statement_end_offset WHEN -1 THEN DATALENGTH(qt.TEXT) ...
8
votes
2answers
178 views

Most efficient way to generate a diff

I have a table in SQL server that looks like this: Id |Version |Name |date |fieldA |fieldB ..|fieldZ 1 |1 |Foo |20120101|23 | ..|25334123 2 |2 |Foo ...
6
votes
3answers
8k views

No advantage of using Cross Apply or CTE over inline sub-query

I came across a query like this: SELECT (SELECT COUNT(1) FROM Orders o WHERE i.ItemId = o.ItemId) [C] FROM Items i I changed it to following ;WITH cte_count AS ( SELECT COUNT(1) c, OrderId FROM ...
3
votes
1answer
1k views

Insert a range of numbers from a call to sp_sequence_get_range

Given the following code: CREATE SEQUENCE dbo.NextTestId AS [bigint] START WITH 10 INCREMENT BY 2 NO CACHE GO DECLARE @variableNumberOfIdsNeeded INT = 7, -- This will change for each call @...
5
votes
1answer
11k views

CROSS APPLY on Scalar function

I have this: SELECT A ,B ,dbo.Func(C) ,dbo.Func(D) ,dbo.Func(E) ,F FROM abcdef WHERE 0 = dbo.Func(C) + dbo.Func(D) I have read that this is not good practice because the function is called million ...
0
votes
1answer
2k views

Pivoting some row data into columns (SQL Server 2008 R2)

Sorry if this has been answered before but I'm exhausted and on a time line. Maybe I'm just an idiot. I'm designing a data export from One application to import into another. Full-Disclosure: I did ...
29
votes
2answers
55k views

Outer Apply vs Left Join Performance

I am Using SQL SERVER 2008 R2 I just came across APPLY in SQL and loved how it solves query problems for so many cases, Many of the tables I was using 2 left join to get the result, I was able to ...
4
votes
1answer
566 views

How Can the Same Query in Two Nearly Identical Instances Generate Two Different Execution Plans?

Server A and Server B have identical hardware and instance configurations (A is Production, B is QA). B's DBs were restored from A's backups from one week ago. I was provided this query by the ...
3
votes
1answer
876 views

Cross Apply without a function

I would like to run a query very similar to this on one of my production databases: -- Setup the table (Already there in my real scenario) create table dbo.MyTable(MyValue int, MyGroup varchar(5)) ...
0
votes
3answers
137 views

How to convert query results into groups of common results

I have a query that returns results like this: MyValue MyGroup _______________|_______________ 56 | I _______________|_______________ 12 | I ...
5
votes
1answer
970 views

Build a three table join with a recusive table in the middle?

I have three relevant tables: Parts, PartGroup, and MarkupGroup. Parts is simple. PartID artificial primary key Part part number PartGroupID Foreign key sample data: 1 ...
3
votes
1answer
2k views

CROSS APPLY-ing a parameterised function

Given the following definitions: CREATE TABLE MyTable ( col1 int, col2 int, col3 int, col4 int ) CREATE FUNCTION fn_MyFunction ( @Param1 int, @Param2 int ) RETURNS TABLE AS ...