Function: `QuerySlice`

Returns a subset of rows from an existing query

Method Signature

QuerySlice(query=[query], offset=[integer], length=[integer])

Argument	Type	Required	Description	Default
`query`	`query`	`true`	The query object to which the rows should be returned.
`offset`	`integer`	`true`	The first row to include in the new query.
`length`	`integer`	`false`	The number of rows to include, defaults to all remaining rows.	`0`