Selecting Records from the Beginning or End of a Result Set : Limits « Select Clause « SQL / MySQL






  1. SQL / MySQL
  2. Select Clause
  3. Limits

Selecting Records from the Beginning or End of a Result Set

      
mysql>
mysql> CREATE TABLE mytable
    -> (
    ->  id              INT UNSIGNED NOT NULL AUTO_INCREMENT,
    ->  name    CHAR(20) NOT NULL,
    ->  birth   DATE,
    ->  color   ENUM('blue','red','green','brown','black','white'),
    ->  foods   SET('lutefisk','burrito','curry','eggroll','fadge','pizza'),
    ->  cats    INT,
    ->  PRIMARY KEY (id)
    -> );
Query OK, 0 rows affected (0.00 sec)

mysql> INSERT INTO mytable
    ->  VALUES
    ->          (NULL,'Jack','1970-04-13','black','eggroll,pizza,fadge',0),
    ->          (NULL,'Tom','1969-09-30','white','curry,eggroll,burrito',3),
    ->          (NULL,'Mary','1957-12-01','red','burrito,pizza,curry',1),
    ->          (NULL,'Jane','1973-11-02','red','pizza,eggroll',4),
    ->          (NULL,'Sean','1963-07-04','blue','burrito,curry',5),
    ->          (NULL,'Alan','1965-02-14','red',',curry,eggroll',1),
    ->          (NULL,'March','1968-09-17','green','fadge,lutefisk',1),
    ->          (NULL,'Shane','1975-09-02','black','pizza,curry',2),
    ->          (NULL,'Dan','1952-08-20','green','fadge,lutefisk',0),
    ->          (NULL,'Tony','1960-05-01','white','pizza,burrito',0)
    -> ;
Query OK, 10 rows affected, 1 warning (0.00 sec)
Records: 10  Duplicates: 0  Warnings: 1

mysql>
mysql> SELECT * FROM mytable;
+----+-------+------------+-------+-----------------------+------+
| id | name  | birth      | color | foods                 | cats |
+----+-------+------------+-------+-----------------------+------+
|  1 | Jack  | 1970-04-13 | black | eggroll,fadge,pizza   |    0 |
|  2 | Tom   | 1969-09-30 | white | burrito,curry,eggroll |    3 |
|  3 | Mary  | 1957-12-01 | red   | burrito,curry,pizza   |    1 |
|  4 | Jane  | 1973-11-02 | red   | eggroll,pizza         |    4 |
|  5 | Sean  | 1963-07-04 | blue  | burrito,curry         |    5 |
|  6 | Alan  | 1965-02-14 | red   | curry,eggroll         |    1 |
|  7 | March | 1968-09-17 | green | lutefisk,fadge        |    1 |
|  8 | Shane | 1975-09-02 | black | curry,pizza           |    2 |
|  9 | Dan   | 1952-08-20 | green | lutefisk,fadge        |    0 |
| 10 | Tony  | 1960-05-01 | white | burrito,pizza         |    0 |
+----+-------+------------+-------+-----------------------+------+
10 rows in set (0.00 sec)

mysql>
mysql>
mysql> SELECT * FROM mytable LIMIT 1;
+----+------+------------+-------+---------------------+------+
| id | name | birth      | color | foods               | cats |
+----+------+------------+-------+---------------------+------+
|  1 | Jack | 1970-04-13 | black | eggroll,fadge,pizza |    0 |
+----+------+------------+-------+---------------------+------+
1 row in set (0.00 sec)

mysql> SELECT * FROM mytable LIMIT 5;
+----+------+------------+-------+-----------------------+------+
| id | name | birth      | color | foods                 | cats |
+----+------+------------+-------+-----------------------+------+
|  1 | Jack | 1970-04-13 | black | eggroll,fadge,pizza   |    0 |
|  2 | Tom  | 1969-09-30 | white | burrito,curry,eggroll |    3 |
|  3 | Mary | 1957-12-01 | red   | burrito,curry,pizza   |    1 |
|  4 | Jane | 1973-11-02 | red   | eggroll,pizza         |    4 |
|  5 | Sean | 1963-07-04 | blue  | burrito,curry         |    5 |
+----+------+------------+-------+-----------------------+------+
5 rows in set (0.00 sec)

mysql>
mysql>
mysql> drop table mytable;
Query OK, 0 rows affected (0.00 sec)








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