"trigger before insert" Code Answer's

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trigger before insert sql code

Breakable Barracuda on May 22, 2020

        
            
        
     CREATE TRIGGER trigger_name
    BEFORE INSERT
    ON table_name FOR EACH ROW
trigger_body;

Source: www.mysqltutorial.org

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trigger before insert

Breakable Barracuda on May 24, 2020

        
            
        
     DELIMITER $$

CREATE TRIGGER before_workcenters_insert
BEFORE INSERT
ON WorkCenters FOR EACH ROW
BEGIN
    DECLARE rowcount INT;
    
    SELECT COUNT(*) 
    INTO rowcount
    FROM WorkCenterStats;
    
    IF rowcount > 0 THEN
        UPDATE WorkCenterStats
        SET totalCapacity = totalCapacity + new.capacity;
    ELSE
        INSERT INTO WorkCenterStats(totalCapacity)
        VALUES(new.capacity);
    END IF; 

END $$

DELIMITER ;

Source: www.mysqltutorial.org

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trigger before insert

Breakable Barracuda on May 24, 2020

        
            
        
     INSERT INTO WorkCenters(name, capacity)
VALUES('Mold Machine',100);

Source: www.mysqltutorial.org

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trigger before insert

Breakable Barracuda on May 24, 2020

CREATE TRIGGER trigger_name
BEFORE INSERT
   ON table_name FOR EACH ROW

BEGIN

   -- variable declarations

   -- trigger code

END;

Source: www.techonthenet.com

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