The OUTPUT clause returns the values of each row that was affected by an INSERT, UPDATE or DELETE statements. It even supports with a MERGE statement, which was introduced in SQL Server 2008 version. The result from the OUTPUT clause can be inserted into a separate table during the execution of the query.
How do you take output in SQL?
The OUTPUT clause has access to two temporary or in-memory SQL tables, called INSERTED and DELETED tables. These tables are populated when an INSERT/UPDATE/DELETE operation is done on a table. As a result, the OUTPUT clause can provide us the affected records by referencing these tables.
What does clause mean in SQL?
A clause in SQL is a part of a query that lets you filter or customizes how you want your data to be queried to you.
How do I display output in SQL Server?
PRINT Statement in Sql Server
- [ALSO READ] PRINT/SELECT Statement messages within WHILE LOOP or BATCH of statement is not displayed immediately after it’s execution- Sql Server.
- Example 4.1: PRINT statement displaying integer variable value.
- Example 4.2: PRINT statement printing XML type variable value.
What is top clause in SQL?
The SQL TOP clause is used to fetch a TOP N number or X percent records from a table. … For example MySQL supports the LIMIT clause to fetch limited number of records while Oracle uses the ROWNUM command to fetch a limited number of records.
How do I get the rows inserted in SQL?
INSERT INTO table(column1, column2,…) VALUES (value1, value2,…); To insert a row into a table, you need to specify three things: First, the table, which you want to insert a new row, in the INSERT INTO clause. Second, a comma-separated list of columns in the table surrounded by parentheses.
What is output by the SQL query select 2 * 4?
The answer is 8.
Can we use 2 With clause in SQL?
However, a statement can contain multiple WITH clauses if they occur at different levels: WITH cte1 AS (SELECT 1) SELECT * FROM (WITH cte2 AS (SELECT 2) SELECT * FROM cte2 JOIN cte1) AS dt; A WITH clause can define one or more common table expressions, but each CTE name must be unique to the clause.
How do you explain a clause?
A clause is a group of words that contain a subject (the noun or pronoun about which something is being said, usually the doer of the action) and a verb (a doing word). An example of a clause is: The fast, red squirrel darted up a tree. The subject of this clause is the fast, red squirrel and the verb is ‘darted’.
Which clause is used in SQL?
The HAVING Clause enables you to specify conditions that filter which group results appear in the results. The WHERE clause places conditions on the selected columns, whereas the HAVING clause places conditions on groups created by the GROUP BY clause.
How do you display in SQL?
The DISPLAY command must be placed immediately after the query statement on which you want it to take effect. For example: SELECT pno, pname FROM part WHERE color=’BLUE’; DISPLAY; When the system encounters this DISPLAY command, it displays the Result window containing the part number and name for all blue parts.
How do I display a table in SQL?
Then issue one of the following SQL statement:
- Show all tables owned by the current user: SELECT table_name FROM user_tables;
- Show all tables in the current database: SELECT table_name FROM dba_tables;
- Show all tables that are accessible by the current user:
How do you do if else in SQL?
Any T-SQL statement can be executed conditionally using IF… ELSE. If the condition evaluates to True, then T-SQL statements followed by IF condition in SQL server will be executed. If the condition evaluates to False, then T-SQL statements followed by ELSE keyword will be executed.