| Name | Type | Optional | ByRef | Description |
|---|---|---|---|---|
| tableName | String | The name of the table to alter. | ||
| columnName | String | The name of the column to alter. | ||
| columnType | iseColumnType | The new column type. | ||
| required | Boolean | The new required property of the column. | ||
| size | Integer | Optional | The new size of the column. If omitted, a value of 1 is assumed. | |
| identity | Boolean | Optional | Indicates whether the column should become an Identity (autonumber) column. If omitted, a value of False is assumed. |
A String value.