Modify rows of a table with an expression : Update « Insert Delete Update « SQL Server / T-SQL

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SQL Server / T-SQL » Insert Delete Update » Update 
Modify rows of a table with an expression


1CREATE TABLE project   (project_no   CHAR(4NOT NULL,
2>                         project_name CHAR(15NOT NULL,
3>                         budget FLOAT NULL)
4>
5insert into project values ('p1', 'Search Engine',        120000.00)
6insert into project values ('p2', 'Programming',          95000.00)
7insert into project values ('p3', 'SQL',                  186500.00)
8>
9select from project
10> GO

(rows affected)

(rows affected)

(rows affected)
project_no project_name    budget
---------- --------------- ------------------------
p1         Search Engine                     120000
p2         Programming                        95000
p3         SQL                               186500

(rows affected)
1>
2> -- Modify rows of a table with an expression.
3>
4UPDATE project SET budget = budget*0.56
5> GO

(rows affected)
1select from project
2> GO
project_no project_name    budget
---------- --------------- ------------------------
p1         Search Engine                      67200
p2         Programming           53200.000000000007
p3         SQL                   104440.00000000001

(rows affected)
1> drop table project
2> GO
1>
           
       
Related examples in the same category
1. Updating Rows Based on Multiple Tables
2. An UPDATE statement can only modify data of a single table
3. Update statement and IN operator
4. Update a single column
5. Change more than one column by adding a comma and the additional column expression
6. Using an expression in our UPDATE statement
7. Update command with where condition
8. Update more than one columns in update clause
9. Update a single row
10. Use CASE in the UPDATE statement
11. Updating a Column Value
12. UPDATE with a Join
13. Reference a declared variable in an update statement
14. Math operator in update statement
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