Tag : query hint


The join order has been enforced because a local join hint is used – Warning in SQL Server 3

When we use a local JOIN hint in T-SQL query, sometimes, SQL Server throws a warning message as “Warning: The join order has been enforced because a local join hint is used.“. For example, below is a query with a local join hint:

After execution, we will get below warning message with result set:

In above code, we are using a local JOIN hint “INNER MERGE JOIN” which forces this query to override the physical join (which could be nested loop or merge or hash join) chosen by SQL Server with the physical join given in the query hint (which is MERGE join in this case). If you want to read more about the physical joins, visit my post “Nested loop, Merge, and Hash Joins in SQL Server“.

Here, SQL Server enforces a join order during query execution because a local join hint has … More


Convert a comma separated list into table 4

In this post, we are going to learn “how we can convert a comma separated list into a table using a recursive CTE”. Below is the code:

Why OPTION MAXRECURSION?

Hint OPTION(MAXRECURSION 32767) is a query hint which instructs to compiler to iterate 32767 times. Default, max recursion of a loop in SQL is 100 and in case we will not put this hint at the end, any string which requires more loop than 100 will raise an error.
To avoid the error we have used OPTION(MAXRECURSION 32767).

Thanks for reading.… More