Use the CONCAT( ) expression with MAX( ) to find the value with the largest population part: : MAX « Aggregate Functions « SQL / MySQL






  1. SQL / MySQL
  2. Aggregate Functions
  3. MAX

Use the CONCAT( ) expression with MAX( ) to find the value with the largest population part:

       
mysql>
mysql> CREATE TABLE states
    -> (
    ->  name            VARCHAR(30) NOT NULL,   # state name
    ->  abbrev          CHAR(2) NOT NULL,               # 2-char abbreviation
    ->  statehood       DATE,                                   # date of entry into the Union
    ->  pop                     BIGINT,                                 # population as of 4/1990
    ->  PRIMARY KEY (abbrev)
    -> );
Query OK, 0 rows affected (0.00 sec)

mysql> SELECT MAX(CONCAT(LPAD(pop,8,' '),name)) FROM states;
+-----------------------------------+
| MAX(CONCAT(LPAD(pop,8,' '),name)) |
+-----------------------------------+
| NULL                              |
+-----------------------------------+
1 row in set (0.00 sec)

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








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