What are the steps to process a single select statement?



What are the steps to process a single select statement?..

Answer / Dherendra Jain

{"answers":[n "1. Parsing: The SQL Parser breaks down the query into tokens and builds an execution plan.n ",n "2. Optimization: The Query Optimizer chooses the most efficient way to execute the query, based on statistics and indexes.n ",n "3. Execution: The Query Executor executes the chosen plan against the data.n ",n "4. Result Set Returned"n ]}

Is This Answer Correct ?    0 Yes 0 No

Post New Answer

More SQL Server Interview Questions

What is checkpoint process in the sql server?

1 Answers  


Can you explain how long are locks retained within the repeatable_read and serializable isolation levels, during a read operation with row-level locking?

1 Answers  


What is a sub-query? When would you use one?

3 Answers  


what are constraints? : Sql server database administration

1 Answers  


Difference between report and query parameter. Why do we need different type of parameter?

1 Answers  


what is the use of database index(apart from the last searching of records) and what is the use of composite key?

1 Answers  


* CREATE TABLE [dbo].[t_Colors]([ColorId] [int] NOT NULL,[ColorName] [varchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL, [ColorDesc] [varchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,[ColorIndex] [int] NULL) ON [PRIMARY] GO * insert into [t_Colors] values(101,'Red','',1) insert into [t_Colors] values(101,'Red1','',2) insert into [t_Colors] values(102,'Blue','',1) insert into [t_Colors] values(102,'Blue1','',2) insert into [t_Colors] values(102,'Blue2','',3) * In this table i need to delete DELETE FROM t_Colors WHERE ColorIndex=1 AND ColorId=102 After delete above condition i need to update the ColorIndex set to 1 for Blue1[ColorName] and 2 for Blue2[ColorName] select * from [t_Colors] Note:- how can i get updates the ColorIndex values after delete. for example we need to update Blue1 ColorIndex set to 1 and Blue2 ColorIndex set to 2

0 Answers  


internal language used in sql server 2000?

2 Answers  


Why main is user defined function?

1 Answers  


What is indexing and its types?

1 Answers  


How to delete all rows with truncate table statement in ms sql server?

1 Answers  


What is measure group, measure? : sql server analysis services, ssas

1 Answers  


Categories