EXAMEN 1.3
mysql>
create database materia_prima;
Query OK, 1 row affected (0.49 sec)
mysql> use materia_prima;
Database changed
mysql>
create table productos(codigo varchar(5) primary key,nombre varchar (15),
precio
integer,fecha_de_compra integer);
Query OK, 0 rows affected (0.14 sec)
mysql> insert into productos
values('a01','vinos',250,2009/11/03);
Query OK, 1 row affected (0.02 sec)
mysql> insert into productos
values('a02','silla modelo.xax',400,2009/11/03);
Query OK, 1 row affected, 1 warning
(0.00 sec)
mysql> insert into productos
values('a03','silla modelo.xax',200,2009/11/03);
Query OK, 1 row affected, 1 warning
(0.00 sec)
mysql> insert into productos
values('a04','silla modelo.zaz',200,2007/11/02);
Query OK, 1 row affected, 1 warning
(0.00 sec)
mysql> insert into productos
values('a05','afilador',25,2007/11/02);
Query OK, 1 row affected (0.00 sec)
mysql>
select*from productos;
+--------+-----------------+--------+-----------------+
|
codigo | nombre | precio |
fecha_de_compra |
+--------+-----------------+--------+-----------------+
|
a01 | vinos |
250 | 61 |
|
a02 | silla modelo.xa | 400 | 61 |
|
a03 | silla modelo.xa | 200 | 61 |
|
a04 | silla modelo.za | 200 | 91 |
| a05 | afilador |
25 | 91 |
+--------+-----------------+--------+-----------------+
5 rows in set (0.00 sec)
mysql> select*from productos
where nombre='vinos';
+--------+--------+--------+-----------------+
|
codigo | nombre | precio | fecha_de_compra |
+--------+--------+--------+-----------------+
| a01 | vinos
| 250 | 61 |
+--------+--------+--------+-----------------+
1 row in set (0.00 sec)
mysql> select*from productos
where nombre like 's%';
+--------+-----------------+--------+-----------------+
|
codigo | nombre | precio |
fecha_de_compra |
+--------+-----------------+--------+-----------------+
|
a02 | silla modelo.xa | 400 | 61 |
|
a03 | silla modelo.xa | 200 | 61 |
| a04 | silla modelo.za | 200 | 91 |
+--------+-----------------+--------+-----------------+
3 rows in set (0.00 sec)
mysql>
select nombre, precio from productos where precio <433;
+-----------------+--------+
|
nombre | precio |
+-----------------+--------+
|
vinos | 250 |
|
silla modelo.xa | 400 |
|
silla modelo.xa | 200 |
| silla modelo.za | 200 |
| afilador |
25 |
+-----------------+--------+
5 rows in set (0.00 sec)
mysql> select avg(precio) from
productos where left (nombre,15) ='silla';
+-------------+
| avg(precio) |
+-------------+
| NULL |
+-------------+
1 row in set (0.00 sec)
mysql> alter table productos add
categoria varchar(10);
Query OK, 5 rows affected (0.04 sec)
Records: 5 Duplicates: 0
Warnings: 0
mysql> update productos set
categoria='utensilio' where left(nombre,5)='vinos';
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1
Warnings: 0
mysql> update productos set
categoria='mueble' where left(nombre,5)='silla';
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3 Changed: 3
Warnings: 0
mysql> select*from productos;
+--------+-----------------+--------+-----------------+-----------+
|
codigo | nombre | precio |
fecha_de_compra | categoria |
+--------+-----------------+--------+-----------------+-----------+
|
a01 | vinos |
250 | 61 | utensilio
|
|
a02 | silla modelo.xa | 400 | 61 | mueble |
|
a03 | silla modelo.xa | 200 | 61 | mueble |
|
a04 | silla modelo.za | 200 | 91 | mueble |
| a05 | afilador |
25 | 91 | NULL |
+--------+-----------------+--------+-----------------+-----------+
5 rows in set (0.00 sec)
mysql> update productos set
categoria='mueble' where left(nombre,5)='afilador';
Query OK, 0 rows affected (0.00 sec)
Rows matched: 0 Changed: 0
Warnings: 0
mysql> select*from productos;
+--------+-----------------+--------+-----------------+-----------+
|
codigo | nombre | precio |
fecha_de_compra | categoria |
+--------+-----------------+--------+-----------------+-----------+
|
a01 | vinos |
250 | 61 | utensilio
|
|
a02 | silla modelo.xa | 400 | 61 | mueble |
|
a03 | silla modelo.xa | 200 | 61 | mueble |
|
a04 | silla modelo.za | 200 | 91 | mueble |
| a05 | afilador |
25 | 91 | NULL |
+--------+-----------------+--------+-----------------+-----------+
5 rows in set (0.00 sec)
mysql> update productos set
categoria='mueble' where left(nombre,8)='afilador';
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1
Warnings: 0
mysql> select*from productos;
+--------+-----------------+--------+-----------------+-----------+
|
codigo | nombre | precio |
fecha_de_compra | categoria |
+--------+-----------------+--------+-----------------+-----------+
|
a01 | vinos |
250 | 61 | utensilio
|
|
a02 | silla modelo.xa | 400 | 61 | mueble |
|
a03 | silla modelo.xa | 200 | 61 | mueble |
|
a04 | silla modelo.za | 200 | 91 | mueble |
| a05 | afilador |
25 | 91 | mueble |
+--------+-----------------+--------+-----------------+-----------+
5 rows in set (0.00 sec)
ejercicio numero 3
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'\c' to clear the buffer.
mysql> create database
productus1;
Query OK, 1 row affected (0.00 sec)
mysql>
use productus1;
Database
changed
mysql>
create table productos(codigo varchar(3),nombre varchar(30),precio decima
l(6,2),fechaalta date,primary
key(codigo));
Query OK, 0 rows affected (0.07 sec)
mysql> insert into productos
values('a01','afilador',2.50,'2007/11/02');
Query OK, 1 row affected (0.00 sec)
mysql> insert into productos
values('s01','silla mod.zaz',20,'2007/11/03');
Query OK, 1 row affected (0.00 sec)
mysql> insert into productos
values('s02','silla mod.xax',25,'2007/11/03');
Query OK, 1 row affected (0.00 sec)
mysql>
select*from productos;
+--------+---------------+--------+------------+
|
codigo | nombre | precio |
fechaalta |
+--------+---------------+--------+------------+
|
a01 | afilador |
2.50 | 2007-11-02 |
|
s01 | silla mod.zaz | 20.00 | 2007-11-03 |
| s02 | silla mod.xax | 25.00 | 2007-11-03 |
+--------+---------------+--------+------------+
3 rows in set (0.00 sec)
mysql> select*from productos
where nombre='afilador';
+--------+----------+--------+------------+
|
codigo | nombre | precio |
fechaalta |
+--------+----------+--------+------------+
|
a01 | afilador | 2.50 | 2007-11-02 |
+--------+----------+--------+------------+
1 row in set (0.00 sec)
mysql> select*from productos
where nombre like 's%';
+--------+---------------+--------+------------+
|
codigo | nombre | precio |
fechaalta |
+--------+---------------+--------+------------+
|
s01 | silla mod.zaz | 20.00 | 2007-11-03 |
| s02 | silla mod.xax | 25.00 | 2007-11-03 |
+--------+---------------+--------+------------+
2 rows in set (0.00 sec)
mysql>
select nombre,precio from productos where precio >22;
+---------------+--------+
|
nombre | precio |
+---------------+--------+
| silla mod.xax | 25.00 |
+---------------+--------+
1 row in set (0.00 sec)
mysql> alter table productos add
categoria varchar(10);
Query OK, 3 rows affected (0.10 sec)
Records: 3 Duplicates: 0
Warnings: 0
mysql> update productos set
categoria='utensilio';
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3 Changed: 3
Warnings: 0
mysql> update productos set
categoria='silla' where left(nombre,5)='silla';;
Query OK, 2 rows affected (0.00 sec)
Rows matched: 2 Changed: 2
Warnings: 0
mysql> use productus1;
Database changed
mysql> update productos set
categoria="silla" where left(nombre,5)='silla';
Query OK, 0 rows affected (0.00 sec)
Rows matched: 2 Changed: 0
Warnings: 0
mysql> select distinct categoria
from productos;
+-----------+
| categoria |
+-----------+
| utensilio |
| silla |
+-----------+
2 rows in set (0.00 sec)
mysql> select categoria, count(*)
from productos group by categoria;
+-----------+----------+
| categoria | count(*) |
+-----------+----------+
| silla |
2 |
| utensilio | 1 |
+-----------+----------+
2 rows in set (0.00 sec)
