What Is a SELECT Query Statement in SQL Server

Q

What Is a SELECT Query Statement in SQL Server?

✍: FYIcenter.com

A

The SELECT statement is also called the query statement. It is the most frequently used SQL statement in any database application. SELECT statements allows you to retrieve data from one or more tables or views, with different selection criteria, grouping criteria and sorting orders.

A SELETE statement has the following basic syntax:

SELECT select_list 
   FROM table_source 
   WHERE search_condition
   GROUP BY group_by_expression 
   HAVING search_condition
   ORDER BY order_by_expression

Here is an example of a SELECT statement with all clauses mentioned above:

SELECT SalesOrderID, SUM(LineTotal) AS TotalPrice
   FROM SalesLT.SalesOrderDetail
   WHERE ModifiedDate > '2004-05-01'
   GROUP BY SalesOrderID
   HAVING COUNT(*) > 30
   ORDER BY TotalPrice DESC

⇒ Testing Table for SELECT Statements in SQL Server

⇐ Using SELECT Statements and GROUP BY Clauses in SQL Server

⇑ Using SELECT Statements and GROUP BY Clauses in SQL Server

⇑⇑ SQL Server Database Tutorials

2016-10-26, 2865🔥, 0💬

Selecting Some Specific Columns from a Table in SQL Server
How To Select Some Specific Columns from a Table in a Query in SQL Server? If you want explicitly tell the query to return some specific columns, you can specify the column names in the SELECT clause. The following select statement returns only three columns, "id", "created" and "url" from the table... 2016-10-26, 3404🔥, 0💬

Selecting Some Specific Rows from a Table in SQL Server
How To Select Some Specific Rows from a Table in SQL Server? If you don't want select all rows from a table, you can specify a WHERE clause to tell the query to return only the rows that meets the condition defined in the WHERE clause. The WHERE clause condition is a normal Boolean expression. If an... 2016-10-26, 2914🔥, 0💬

Using ORDER BY with UNION Operators in SQL Server
How To Use ORDER BY with UNION Operators in SQL Server? If you need to sort the output from two queries grouped together with a UNION operator, you need to apply the ORDER BY clause at the group level, not at the subquery level. Note that SQL Server and MySQL react differently to the ORDER BY clause... 2016-10-26, 2913🔥, 0💬

What Is a SELECT Query Statement in SQL Server
What Is a SELECT Query Statement in SQL Server? The SELECT statement is also called the query statement. It is the most frequently used SQL statement in any database application. SELECT statements allows you to retrieve data from one or more tables or views, with different selection criteria, groupi... 2016-10-26, 2866🔥, 0💬

Using SELECT Statements and GROUP BY Clauses in SQL Server
Where to find answers to frequently asked questions on Using SELECT Statements and GROUP BY Clauses in SQL Server? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on Using SELECT Statements and GROUP BY Clauses in SQL Server. Clear answers are provid... 2016-10-26, 2757🔥, 0💬

Testing Table for SELECT Statements in SQL Server
How To Create a Testing Table with Test Data to try with SELECT statements in SQL Server? If you want to follow the tutorial exercises presented in this collection, you need to create a testing table and insert some test data, as shown in the following sample script: CREATE TABLE fyi_links (id INTEG... 2016-10-26, 2716🔥, 0💬

Returning the Second 5 Rows from a Query in SQL Server
How To Return the Second 5 Rows in SQL Server? If you want to display query output in multiple pages with 5 rows per page, and the visitor wants to see the output for the second page, you need to display query output from row 6 to row 10. If you are using MySQL server, you can use the "LIMIT startRo... 2016-10-29, 2700🔥, 0💬

UNION - Merging Outputs from Two Queries Together in SQL Server
How To Use UNION to Merge Outputs from Two Queries Together in SQL Server? If you have two queries that returns the same row fields, you can merge their outputs together with the UNION operator. The following tutorial exercise shows you how to use the UNION operator: SELECT * FROM fyi_links WHERE ta... 2016-10-26, 2546🔥, 0💬

"TOP" - Return the Top 5 Rows from a SELECT Query in SQL Server
How To Return the Top 5 Rows from a SELECT Query in SQL Server? If you want the query to return only the first 5 rows, you can use the "TOP 5" clause. The TOP clause takes one parameter to indicate how many top rows to return. The following statements returns the first 5 rows and 3 rows from the fyi... 2016-10-29, 2510🔥, 0💬

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