I've done the difficult bit for you (writing the function) I...

Create this function

CREATE FUNCTION dbo.TitleCase
(
    @String nvarchar(MAX)
)
RETURNS nvarchar(MAX)
AS
BEGIN
RETURN stuff(replace(replace(replace(replace(replace(replace(replace(replace(replace(replace(replace(replace(replace(replace(
       replace(replace(replace(replace(replace(replace(replace(replace(replace(replace(replace(replace(
       lower(@String),' A','...

SELECT *
  FROM ParentTable p
 OUTER APPLY(SELECT TOP(1) *
               FROM ChildTable c
...

Just like to say congratulations to Jeff for reaching 1 million points:

I assume, therefore, that none of your reports aren't already in an SSRS project? If so, how are the existing reports maintained? What happens when someone asks for a...

SSIS comes with something called CHECKPOINT. This allows a process to be restarted from the point of failure. I think you should be using this.

https://docs.microsoft.com/en-us/sql/integration-services/packages/restart-packages-by-using-checkpoints?view=sql-server-ver15

I use Faker, you might need to install Python to use it

https://faker.readthedocs.io/en/master/

Thank...

Install the table valued function in this script: https://www.sqlservercentral.com/scripts/a-daterange-table-valued-function

IF OBJECT_ID('[dbo].[DateRange]','IF') IS NULL BEGIN
    PRINT 'CREATE FUNCTION [dbo].[DateRange]' 
    EXEC ('CREATE FUNCTION...

If you have a query that is taking a long time to execute. Just paste it into SSMS and press the estimated execution plan button in the menu: 

If you have a query that is taking a long time to execute. Just paste it into SSMS and press the estimated execution plan button in the menu: 

i know this one.

the situation is little bit different.

so the query is can we use "with cte" or recursion  inside following clauses like  exists  or cross apply or outer...

You cannot union two WITH statements together. You also cannot have an order by within a union all unless you also use TOP to limit the rows though you could...

You can also get the query plan as text

SELECT TOP(10)
       d.name          ...

When you execute dynamic SQL in a stored procedure you need to have the permissions to execute the SQL inside the dynamic SQL.

This is not true for non-dynamic SQL as...