[[include-in-all]] === `include_in_all` The `include_in_all` parameter provides per-field control over which fields are included in the <> field. It defaults to `true`, unless <> is set to `no`. This example demonstrates how to exclude the `date` field from the `_all` field: [source,js] -------------------------------- PUT my_index { "mappings": { "my_type": { "properties": { "title": { <1> "type": "text" }, "content": { <1> "type": "text" }, "date": { <2> "type": "date", "include_in_all": false } } } } } -------------------------------- // CONSOLE <1> The `title` and `content` fields will be included in the `_all` field. <2> The `date` field will not be included in the `_all` field. TIP: The `include_in_all` setting is allowed to have different settings for fields of the same name in the same index. Its value can be updated on existing fields using the <>. The `include_in_all` parameter can also be set at the type level and on <> or <> fields, in which case all sub- fields inherit that setting. For instance: [source,js] -------------------------------- PUT my_index { "mappings": { "my_type": { "include_in_all": false, <1> "properties": { "title": { "type": "text" }, "author": { "include_in_all": true, <2> "properties": { "first_name": { "type": "text" }, "last_name": { "type": "text" } } }, "editor": { "properties": { "first_name": { "type": "text" }, <3> "last_name": { "type": "text", "include_in_all": true } <3> } } } } } } -------------------------------- // CONSOLE <1> All fields in `my_type` are excluded from `_all`. <2> The `author.first_name` and `author.last_name` fields are included in `_all`. <3> Only the `editor.last_name` field is included in `_all`. The `editor.first_name` inherits the type-level setting and is excluded. [NOTE] .Multi-fields and `include_in_all` ================================= The original field value is added to the `_all` field, not the terms produced by a field's analyzer. For this reason, it makes no sense to set `include_in_all` to `true` on <>, as each multi-field has exactly the same value as its parent. =================================