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Alter table to add columns

     
mysql>
mysql> CREATE   TABLE TEAMS
    ->         (TEAMNO         INTEGER      NOT NULL,
    ->          EmployeeNO       INTEGER      NOT NULL,
    ->          DIVISION       CHAR(6)      NOT NULL,
    ->          PRIMARY KEY    (TEAMNO)             );
Query OK, 0 rows affected (0.00 sec)

mysql>
mysql>
mysql>
mysql> ALTER   TABLE TEAMS
    -> ADD    (CATEGORY  VARCHAR(20) NOT NULL,
    ->         IMAGE     INTEGER DEFAULT 10);
Query OK, 0 rows affected (0.01 sec)
Records: 0  Duplicates: 0  Warnings: 0

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








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18.The Effect of ALTER TABLE on Null and Default Value Attributes
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24.Two ALTER TABLE statements can be combined
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26.Syntax for Altering a Column
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28.Storing Altered Character Strings
29.To drop a default value, use ALTER col_name DROP DEFAULT:
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31.Use the asterisk to try matching against the name ian or the alternative spelling, iain.
32.Specifying Multiple Alterations
33.Alter table to add an index
34.Alter table to add unique index
35.Alter table to Delete an Index
36.Alter table to add index
37.To drop an index with ALTER TABLE
38.Reduce the number of significant characters per index in the index to the first 16 characters
39.Add IGNORE to the statement, then use SELECT to have a look at the table contents to see how the duplicates ha
40.Change j from INT to BIGINT
41.MODIFY statement should specify the null and default value attributes explicitly
42.Redefine i to be NOT NULL, then try again
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