Why we use outer apply in SQL Server?

OUTER APPLY returns both rows that produce a result set, and rows that do not, with NULL values in the columns produced by the table-valued function. OUTER APPLY work as LEFT OUTER JOIN. Above both query produce same result.Click to see full answer. In this manner, when to use Cross Apply and Outer Apply?It retrieves those records from the table valued function and the table being joined, where it finds matching rows between the two. On the other hand, OUTER APPLY retrieves all the records from both the table valued function and the table, irrespective of the match. why would you use a cross join? A cross join is used when you wish to create combination of every row from two tables. All row combinations are included in the result; this is commonly called cross product join. A common use for a cross join is to create obtain all combinations of items, such as colors and sizes. Consequently, what are cross apply and outer apply in SQL Server? SQL Server APPLY operator has two variants; CROSS APPLY and OUTER APPLY. The CROSS APPLY operator returns only those rows from the left table expression (in its final output) if it matches with the right table expression. In other words, the right table expression returns rows for the left table expression match only.What is difference between cross join and cross join?1. A cross join that does not have a WHERE clause produces the Cartesian product of the tables involved in the join. 1. The APPLY operator allows you to invoke a table-valued function for each row returned by an outer table expression of a query.

ncG1vNJzZmivp6x7pLHLnpmroaSesrSu1LOxZ5ufonuotI6wn7Jlp5p6tr%2FEZqaurJWneqK8z6WwZqGeYsCyuIysnKuulad8