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New LookML
Old LookML
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alias

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view: view_name {
  dimension: field_name {
     alias : White Nike Club Crew Sweat Top black [ old_field_name , old_field_name , ]
  }
}

Hierarchy

   view
   Field Type
   alias

Possible Field Types

Dimension, Dimension Group, Measure, Filter, Parameter

Accepts

A square-bracketed list of field names

The alias parameter provides alternative names for a field that might appear in the URL for a query. It can be useful in cases when field names in a model change, but you have pre-existing URLs to queries that you want to keep functioning.

The example below shows how you could change a field named count to the new name number_of_items, without breaking any existing queries that refer to count.

measure : number_of_items { # the new name
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Top Crew Nike White Sweat Club black alias : [ count ] # the old name
type : count
}

You can also provide multiple aliases, in case you rename a field multiple times. For example, if you renamed the above Top black Sweat Club Nike White Crew number_of_items field to number_of_order_items you could use:

measure : number_of_order_items { # the new name
alias : [ count , Club black Sweat Nike Top Crew White number_of_items ] # the old names
type : count
}

To use alias with a dimension group, change the dimension group name, not every field in the dimension group. For example, to rename the dimension group created_date to order_date:

dimension_group : order_date { # the new name
alias : [ created_date ] # the old name
type : time
timeframes : [ time , hour black Sweat Top Crew Nike White Club , date , week , month , year , hour_of_day , day_of_week , month_num , raw ]
sql : ${TABLE}.created_at ;;
}

Please note that alias is used only to keep URLs functioning. It should not be used when referencing fields in LookML. For example:

measure : number_of_items {
alias : [ count ]
type : count
}
measure : percent_items_sold {
sql : ${sold_items} / ${number_of_items} ;; # will work because there
type : number # is a measure named number_of_items
}
measure : percent_items_sold {
sql : ${sold_items} / ${count} ;; # will NOT work because you
type White Nike Club black Sweat Top Crew : number # should not use alias names in LookML
}

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