Pass column as the parameter : Parameter « Procedure Function « SQL Server / T-SQL Tutorial

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SQL Server / T-SQL Tutorial » Procedure Function » Parameter 
21. 13. 11. Pass column as the parameter
6CREATE TABLE titles(
7>    title_id       varchar(20),
8>    title          varchar(80)       NOT NULL,
9>    type           char(12)          NOT NULL,
10>    pub_id         char(4)               NULL,
11>    price          money                 NULL,
12>    advance        money                 NULL,
13>    royalty        int                   NULL,
14>    ytd_sales      int                   NULL,
15>    notes          varchar(200)          NULL,
16>    pubdate        datetime          NOT NULL
17)
18> GO
1>
2insert titles values ('1''Secrets',   'popular_comp', '1389', $20.00, $8000.00, 104095,'Note 1','06/12/94')
3insert titles values ('2''The',       'business',     '1389', $19.99, $5000.00, 104095,'Note 2','06/12/91')
4insert titles values ('3''Emotional', 'psychology',   '0736', $7.99,  $4000.00, 103336,'Note 3','06/12/91')
5insert titles values ('4''Prolonged', 'psychology',   '0736', $19.99, $2000.00, 104072,'Note 4','06/12/91')
6insert titles values ('5''With',      'business',     '1389', $11.95, $5000.00, 103876,'Note 5','06/09/91')
7insert titles values ('6''Valley',    'mod_cook',     '0877', $19.99, $0.00,    122032,'Note 6','06/09/91')
8insert titles values ('7''Any?',      'trad_cook',    '0877', $14.99, $8000.00, 104095,'Note 7','06/12/91')
9insert titles values ('8''Fifty',     'trad_cook',    '0877', $11.95, $4000.00, 141509,'Note 8','06/12/91')
10> GO

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)
1>    CREATE FUNCTION dbo.AveragePrice()
2>    RETURNS money
3>    WITH SCHEMABINDING
4>    AS
5>    BEGIN
6>       RETURN (SELECT AVG(PriceFROM dbo.Titles)
7>    END
8>    GO
1>
2>    CREATE FUNCTION dbo.PriceDifference(@Price money)
3>    RETURNS money
4>    AS
5>    BEGIN
6>       RETURN @Price - dbo.AveragePrice()
7>    END
8> GO
1>    SELECT Title,
2>       Price,
3>       dbo.AveragePrice() AS Average,
4>       dbo.PriceDifference(PriceAS Difference
5>    FROM Titles
6>    WHERE Type='popular_comp'
7> GO
Title                                                                            Price                 Average               Difference
-------------------------------------------------------------------------------- --------------------- --------------------- ---------------------
Secrets                                                                                        20.0000               15.8562                4.1438
Secrets                                                                                        20.0000               15.8562                4.1438
Secrets                                                                                        20.0000               15.8562                4.1438
Secrets                                                                                        20.0000               15.8562                4.1438
Secrets                                                                                        20.0000               15.8562                4.1438
Secrets                                                                                        20.0000               15.8562                4.1438
Secrets                                                                                        20.0000               15.8562                4.1438

(rows affected)
1>
21. 13. Parameter
21. 13. 1. The syntax for declaring parameters
21. 13. 2. Parameterization: @parameter_name [AS] datatype [= default|NULL] [VARYING] [OUTPUT|OUT]
21. 13. 3. Procedure with default parameter value
21. 13. 4. Check parameter value with if statement
21. 13. 5. Procedure with two parameters
21. 13. 6. Passing the ORDER BY Column as a Parameter, Using a Column Number
21. 13. 7. Passing the ORDER BY Column as a Parameter, Using Dynamic Execution
21. 13. 8. Select using value from parameter
21. 13. 9. Call procedure with parameter name
21. 13. 10. Parameter with null default value
21. 13. 11. Pass column as the parameter
21. 13. 12. parameters can be passed explicitly by value
21. 13. 13. stored procedure can be executed with the parameter and assigned value
21. 13. 14. Wildcards in Parameters
21. 13. 15. Check value range for input parameter
21. 13. 16. Code that omits both optional parameters
21. 13. 17. Code that omits one optional parameter
21. 13. 18. Code that passes the parameters by position
21. 13. 19. Code that passes the parameters by name
21. 13. 20. Stored Procedure with Cursor Parameter
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