Insert data from a table into another table when a trigger fires - mysql

Question

I have 4 tables :
pacienti
cabinete
tmp
vizite.
DROP SCHEMA IF EXISTS tr;
CREATE SCHEMA IF NOT EXISTS tr;
USE tr;
CREATE TABLE IF NOT EXISTS pacienti
(
id_pac INT NOT NULL AUTO_INCREMENT PRIMARY KEY
Nume VARCHAR(40) DEFAULT 'anonim',
Prenume VARCHAR(40) DEFAULT 'anonim',
UNIQUE (Nume,Prenume)
) ENGINE=INNODB;
CREATE TABLE IF NOT EXISTS cabinete
(
id_cab INT NOT NULL AUTO_INCREMENT PRIMARY KEY
Denumire VARCHAR(40) DEFAULT 'nespecificat',
UNIQUE (Denumire)
) ENGINE=INNODB;
CREATE TABLE IF NOT EXISTS tmp
(
id_tmp INT(5) NOT NULL AUTO_INCREMENT PRIMARY KEY,
DataVizita VARCHAR(10),
OraIntrare TIME,
ComplDate DATETIME,
NumePacient VARCHAR(40) DEFAULT 'anonim',
PrenumePacient VARCHAR(40) DEFAULT 'anonim',
NumeMedic VARCHAR(40) DEFAULT 'nespecificat',
PrenumeMedic VARCHAR(40) DEFAULT 'nespecificat',
Cabinet VARCHAR(30) DEFAULT 'nespecificat'
);
CREATE TABLE IF NOT EXISTS vizite
(
id_viz INT(5) NOT NULL AUTO_INCREMENT PRIMARY KEY,
Data_viz DATETIME,
Medic_id INT(5) NOT NULL,
Pacient_id INT(5) NOT NULL,
Cabinet_id INT(5) NOT NULL,
FOREIGN KEY (`Medic_id`) REFERENCES `tr`.`medici`(`id_med`)
ON UPDATE RESTRICT ON DELETE CASCADE,
FOREIGN KEY (`Pacient_id`) REFERENCES `tr`.`pacienti`(`id_pac`)
ON UPDATE RESTRICT ON DELETE CASCADE,
FOREIGN KEY (`Cabinet_id`) REFERENCES `tr`.`cabinete`(`id_cab`)
ON UPDATE RESTRICT ON DELETE CASCADE
) ENGINE=INNODB;
I have a file from which I have to import the data into the tmp table.
The file (*.txt) have the next fields:
DataVizita | OraIntrare | NumePacient | PrenumePacient | NumeMedic | PrenumeMedic | Cabinet
--------------------------------------------------------------------------------------------
22/04/2005 | 01:52:34 | Huruiala |Carmen Alexandra| Garbeata | Panait | 1
05/12/2005 | 04:16:02 | Schornig | Petre | Rusu | Dragos Mihai | 2
07/11/2004 | 11:24:27 | Graur |Alexandra-Cris. | Soarece | Dan-Cristian | 4
07/05/2008 | 06:35:44 | Rudnitchi | Marian | Galescu |George Valentin| 5
.
.
.
etc…
AFTER / BEFORE I made the import in the tmp table, I have to do some operations :
Create a trigger which must concat the DataVizita and OraIntrare into a DATETIME field (I succed by creating a function which convert DataVizita to the right format and concatenate it with OraIntrare and place the result in ComplDate from tmp table.
Here is what I already did and it works:
CREATE FUNCTION formdate(ziua VARCHAR(10), timpul TIME)RETURNS DATETIME
DERMINISTIC
RETURN
CONCAT (DATE_FORMAT(STR_TO_DATE(ziua, '%d/%m/%Y' ) , '%Y-%m-%d' ),' ',timpul);
DELIMITER $$
CREATE TRIGGER upd_date BEFORE INSERT ON tmp
FOR EACH ROW
BEGIN
SET new.ComplDate = formdate(new.DataVizita,new.OraIntrare);
END$$
DELIMITER ;
The second thing I have to do is to fill the pacienti and cabinete tables with data from this file.
And this one I need it because I can’t figure it out how to do it :(
Sorry for this long presentation, but I was thinking that someone will need all the details in order to understand my question.

Answer 1

I have realized that actually is very simple :). The final trigger should look like this :
DROP TRIGGER IF EXISTS upd_date;
DELIMITER $$
CREATE TRIGGER upd_date BEFORE INSERT ON tmp
FOR EACH ROW
BEGIN
SET new.ComplDate=formdate(new.DataVizita,new.OraIntrare);
INSERT INTO pacienti(nume,prenume) VALUES(new.NumePacient,new.PrenumePacient)
ON DUPLICATE KEY UPDATE nume=new.NumePacient, prenume=new.PrenumePacient;
INSERT INTO cabinete(Denumire) VALUES(new.Cabinet)
ON DUPLICATE KEY UPDATE Denumire=new.Cabinet;
END$$
DELIMITER ;
Hope that helped somebody !