If the league number is null, give the value 1.
mysql>
mysql>
mysql> CREATE TABLE PLAYERS
-> (
-> PLAYERNO INTEGER NOT NULL,
-> NAME CHAR(15) NOT NULL,
-> INITIALS CHAR(3) NOT NULL,
-> BIRTH_DATE DATE ,
-> SEX CHAR(1) NOT NULL,
-> JOINED SMALLINT NOT NULL,
-> STREET VARCHAR(30) NOT NULL,
-> HOUSENO CHAR(4) ,
-> POSTCODE CHAR(6) ,
-> TOWN VARCHAR(30) NOT NULL,
-> PHONENO CHAR(13) ,
-> LEAGUENO CHAR(4) ,
-> PRIMARY KEY (PLAYERNO)
-> );
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql> INSERT INTO PLAYERS VALUES (2, 'Everett', 'R', '1948-09-01', 'M', 1975, 'Stoney Road','43', '3575NH', 'Stratford'
, '070-237893', '2411');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO PLAYERS VALUES (6, 'Parmenter', 'R', '1964-06-25', 'M', 1977, 'Haseltine Lane','80', '1234KK', 'Strat
ford', '070-476537', '8467');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO PLAYERS VALUES (7, 'Wise', 'GWS', '1963-05-11', 'M', 1981, 'Edgecombe Way','39', '9758VB', 'Stratford
', '070-347689', NULL);
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO PLAYERS VALUES (8, 'Newcastle', 'B', '1962-07-08', 'F', 1980, 'Station Road','4', '6584WO', 'Inglewoo
d', '070-458458', '2983');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO PLAYERS VALUES (27, 'Collins', 'DD', '1964-12-28', 'F', 1983, 'Long DRay','804', '8457DK', 'Eltham',
'079-234857', '2513');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO PLAYERS VALUES (28, 'Collins', 'C', '1963-06-22', 'F', 1983, 'Old Main Road','10', '1294QK', 'Midhurs
t', '010-659599', NULL);
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO PLAYERS VALUES (39, 'Bishop', 'D', '1956-10-29', 'M', 1980, 'Eaton Square','78', '9629CD', 'Stratford
', '070-393435', NULL);
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO PLAYERS VALUES (44, 'Baker', 'E', '1963-01-09', 'M', 1980, 'Lewis Street','23', '4444LJ', 'Inglewood'
, '070-368753', '1124');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO PLAYERS VALUES (57, 'Brown', 'M', '1971-08-17', 'M', 1985, 'Edgecombe Way','16', '4377CB', 'Stratford
', '070-473458', '6409');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO PLAYERS VALUES (83, 'Hope', 'PK', '1956-11-11', 'M', 1982, 'Magdalene Road','16A', '1812UP', 'Stratfo
rd', '070-353548', '1608');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO PLAYERS VALUES (95, 'Miller', 'P', '1963-05-14', 'M', 1972, 'High Street','33A', '5746OP', 'Douglas',
'070-867564', NULL);
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO PLAYERS VALUES (100, 'Parmenter', 'P', '1963-02-28', 'M', 1979, 'Haseltine Lane','80', '6494SG', 'Str
atford', '070-494593', '6524');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO PLAYERS VALUES (104, 'Moorman', 'D', '1970-05-10', 'F', 1984, 'Stout Street','65', '9437AO', 'Eltham'
, '079-987571', '7060');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO PLAYERS VALUES (112, 'Bailey', 'IP', '1963-10-01', 'F', 1984, 'Vixen Road','8', '6392LK', 'Plymouth',
'010-548745', '1319');
Query OK, 1 row affected (0.00 sec)
mysql>
mysql>
mysql> SELECT INITIALS, NAME, COALESCE(LEAGUENO, '1')
-> FROM PLAYERS;
+----------+-----------+-------------------------+
| INITIALS | NAME | COALESCE(LEAGUENO, '1') |
+----------+-----------+-------------------------+
| R | Everett | 2411 |
| R | Parmenter | 8467 |
| GWS | Wise | 1 |
| B | Newcastle | 2983 |
| DD | Collins | 2513 |
| C | Collins | 1 |
| D | Bishop | 1 |
| E | Baker | 1124 |
| M | Brown | 6409 |
| PK | Hope | 1608 |
| P | Miller | 1 |
| P | Parmenter | 6524 |
| D | Moorman | 7060 |
| IP | Bailey | 1319 |
+----------+-----------+-------------------------+
14 rows in set (0.00 sec)
mysql>
mysql>
mysql> drop table players;
Query OK, 0 rows affected (0.00 sec)
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