CONCAT() är nyckeln.
INNAN:
mysql> CREATE PROCEDURE `getMonthlyTotalScore`(IN ninjaId int, IN month int, IN year int)
-> BEGIN
-> DECLARE startDate DATE;
-> DECLARE endDate DATE;
-> DECLARE maxDay INTEGER;
->
-> SELECT year + '-' + month + '-01'; #NOTE THIS
->
->
-> END;
-> |
Query OK, 0 rows affected (0.00 sec)
mysql> call getMonthlyTotalScore(1,5,2012);
-> |
+----------------------------+
| year + '-' + month + '-01' |
+----------------------------+
| 2016 |
+----------------------------+
1 row in set (0.00 sec)
EFTER:
mysql> CREATE PROCEDURE `getMonthlyTotalScore`(IN ninjaId int, IN month int, IN year int)
-> BEGIN
-> DECLARE startDate DATE;
-> DECLARE endDate DATE;
-> DECLARE maxDay INTEGER;
->
-> SELECT CONCAT(year,'-',month,'-01'); # NOTE THIS
->
->
-> END; |
Query OK, 0 rows affected (0.00 sec)
mysql> call getMonthlyTotalScore(1,5,2012);
-> |
+------------------------------+
| CONCAT(year,'-',month,'-01') |
+------------------------------+
| 2012-5-01 |
+------------------------------+
1 row in set (0.00 sec)
Query OK, 0 rows affected (0.00 sec)