DbQueryColumn

DbQueryColumn is a class representing a column present in the DbQuery's SELECT, WHERE or ORDER BY clauses.

Properties

Name	Type	Description
`query`	DbQuery	The query this column is selected by
`sql`	String	The expression to be selected (left to the `AS` keyword in the `SELECT` clause)
`alias`	String	The name of this column in the resulting dataset (right to the `AS` keyword in the `SELECT` clause)
`qName`	String	Copy of `alias`, safely quoted for interpolation in SQL
`desc`	Boolean	If `true` and this column is included in the DbQuery's `order` list, the corresponding `sql` in the `ORDER BY` will be followed by the `DESC` keyword.

const myColumn = new DbQueryColumn (myQuery, 'NOW()', 'time_stamp')

For DbRelation columns described in the DbModel, the DbColumn.toQueryColumn convenience method is provided.