Calculation in INSERT clause : Insert « Insert Delete Update « SQL / MySQL

1. SQL / MySQL
2. Insert Delete Update
3. Insert

Calculation in INSERT clause

  
/*
mysql> Drop table Inventory;
Query OK, 0 rows affected (0.02 sec)

mysql> CREATE TABLE Inventory
    -> (
    ->    ID SMALLINT NOT NULL PRIMARY KEY,
    ->    InStock SMALLINT NOT NULL,
    ->    OnOrder SMALLINT NOT NULL,
    ->    Reserved SMALLINT NOT NULL
    -> );
Query OK, 0 rows affected (0.05 sec)

mysql> INSERT INTO Inventory VALUES (104, 16, 25-InStock, 0);
Query OK, 1 row affected (0.00 sec)

mysql> select * from Inventory;
+-----+---------+---------+----------+
| ID  | InStock | OnOrder | Reserved |
+-----+---------+---------+----------+
| 104 |      16 |       9 |        0 |
+-----+---------+---------+----------+
1 row in set (0.00 sec)


*/

Drop table Inventory;

CREATE TABLE Inventory
(
   ID SMALLINT NOT NULL PRIMARY KEY,
   InStock SMALLINT NOT NULL,
   OnOrder SMALLINT NOT NULL,
   Reserved SMALLINT NOT NULL
);



INSERT INTO Inventory VALUES (104, 16, 25-InStock, 0);


select * from Inventory;
           
         
    
  

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