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Sql server client statistics not updating with cte
Sql server client statistics not updating with cte




sql server client statistics not updating with cte

of records based upon a Percentage value as shown below. Instead of specifying the numeric value in the TOP clause, we can use the PERCENT option to fetch the no. While using the WITH TIES option, the ORDER BY clause is mandatory and if we are using the WITH TIES option in the SELECT statement without the ORDER BY clause, SQL Server will show the below error. That clearly explains that using the WITH TIES option, we can expect additional records based upon the ORDER BY fields specified out. Using WITH TIES option will fetch all records with Aaron as FirstName and the values before Aaron resulting in 59 records even though we have specified that we need to fetch only TOP 10 records. SELECT TOP 10 WITH TIES FirstName, LastName Let’s use the WITH TIES option to see how many records are fetched out. In the previous result set shown above, we can see a lot of records with Aaron as FirstName but fetched only 10 records by using the TOP 10 clause.

sql server client statistics not updating with cte

The WITH TIES option will fetch more records if the last record fetched as a part of using the TOP statement has tied values. To fetch the TOP 10 records in a specific order for example based upon FirstName, we need to use ORDER BY as shown below. The usage of () brackets while specifying the integer values for the TOP clause is optional, so I use the numeric value without () brackets throughout this article, however () brackets are mandatory for DML operations.Įxecuting the above query will return the below result set.Īs seen above, using TOP 10 doesn’t guarantee that the records are in a specific order and SQL Server just fetches 10 records randomly. In the AdventureWorks database, we can SELECT TOP 10 records from the Person.Person table using the below query. We can see the WITH TIES option in more details with an example. WITH TIES option refers to fetching more records based upon the record value matching the last value.Expression value can also derive its value from a variable as well.of records based upon the expression (a numeric value) or else based upon a Percentage value.

sql server client statistics not updating with cte

Syntax of TOP Clause is as follows: TOP (expression) For DML statements like INSERT, UPDATE, DELETE and MERGE, using the TOP clause limits the no. The TOP clause is the most commonly used option to limit the no. In this article, we can go through the various options provided by SQL Server to limit the number of records fetched by a SELECT query or other DML statements. While executing SELECT queries on tables containing huge records, developers often need to limit the number of records being fetched out to avoid performance issues or just analyze a subset of records for testing purposes.






Sql server client statistics not updating with cte