09 Aug 18 · dan-irving · #teradata ·   Bookmark   ×

How to pass a parameter into a sql query in Teradata

Solution:

Create a Macro in Teradata. A Macro is pretty much just a parameterized view, 

CREATE MACRO myMacro (parameter1 VARCHAR(20), parameter2 DATE)
AS
(
    SELECT t1.* 
    FROM table1 t1
    LEFT JOIN
    (
        SELECT t2.col1, t3.col2, SUM(t3.col3)
        FROM table2 t2
        INNER JOIN table3 t3
        WHERE t3.col2 NOT LIKE :parameter1
        GROUP BY 1,2
        QUALIFY ROW_NUMBER() OVER(PARTITION BY t2.col1 ORDER BY t3.col1) = 1
    ) x
    ON t1.col1 = x.col1
    WHERE t1.START_DATE >= :parameter2;
);

To call it:

Exec myMacro('Harold', DATE '2015-01-01');

dan-irving

posted on 09 Aug 18

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