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Altering Tables ( Remove Columns )



To drop a column, use a DROP clause that names the column to be removed:

ALTER TABLE eu_countries DROP id;

The above ALTER TABLE/DROP statement changes the table structure as follows:

+----------------+---------------+------+-----+---------+-------+
| Field                 | Type                | Null   | Key | Default    | Extra   |
+----------------+---------------+------+-----+---------+-------+
| name                 | char(52)          | NO   |          | NULL    |           |
| new_population | decimal(12,1)  | NO   |          | 0.0         |           |
+----------------+---------------+-----+------+---------+-------+
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