pub struct ColumnDefinition {
    pub name: String,
    pub data_type: DataType,
    pub nullable: bool,
    pub default: Option<DefaultValue>,
    pub primary_key: bool,
    pub unique: bool,
    pub autoincrement: bool,
    pub references: Option<ForeignKeyRef>,
    pub check: Option<String>,
    pub collation: Option<String>,
}

Column name.

Data type.

Whether the column is nullable.

Default value.

Whether this is a primary key.

Whether this column is unique.

Whether this column auto-increments.

Foreign key reference, if any.

Check constraint expression, if any.

Collation for string columns.