delete or update information in a database. Usually, a query response returns data from different tables within the database, but this does not apply every time (for example, a delete query will not return
The Microsoft SQL Server max degree of parallelism (MAXDOP) configuration option controls the number of processors that are used for the execution of a query in a parallel plan. This option determines the computing and threads resources that are used for the query plan operators that perform the ...
COMMIT, SET TRANSACTION, ROLLBACK, SAVEPOINT are examples of TCL commands. DQL: Data Query Language is used to retrieve data from databases using the SELECT statement. 9. Difference between Drop, Delete, and Truncate commands? The DROP, DELETE, and TRUNCATE commands in SQL are used for ...
COMMIT, SET TRANSACTION, ROLLBACK, SAVEPOINT are examples of TCL commands. DQL: Data Query Language is used to retrieve data from databases using the SELECT statement. 9. Difference between Drop, Delete, and Truncate commands? The DROP, DELETE, and TRUNCATE commands in SQL are used for ...
System: You are an agent designed to interact with a SQL database. Given an input question, create a syntactically correct clickhouse query to run, then look at the results of the query and return the answer. Unless the user specifies a specific number of examples they wish to obtain, alwa...
The API responsible for doing this might be called from SQLClient, OLE DB, ODBC, or DB-Library, but ultimately they all resolve to the same thing: a TDS that instructs the server to terminate the current user's query.Note that this does nothing to the thread per se, and this doesn'...
The plans are represented graphically where each operator is represented with an icon In this article, we will show a series of examples for basic T-SQL queries, explain the SQL Server query execution plan, and its components for each example. We will show why indexing is important and how ...
Most Commonly Asked SQL Interview Questions and Answers for 2025 Skip Introduction SQL stands for Structured Query Language. It is used to maintain communication with a database. SQL is also considered a standard language for relational database management systems. ...
With the clustered index: Besides that, the singleton seeks principle can also work multiple times for some queries as we can see in the below query. 1 2 3 4 SELECT * FROM Cars WHERE Id = 6 OR Id = 20; The following image illustrates how the multiple singleton seek process works...
For example, if a select query returns duplicate rows with aggregations, the result may be wrong. This can be fixed by a hotfix. Interview Questions for SQL Server Experienced 11. Suppose, there is a trigger defined for INSERT operations on a table in an OLTP system. The trigger is ...