48 lines
1.4 KiB
Plaintext
48 lines
1.4 KiB
Plaintext
[[mapping-index]]
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=== `index`
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The `index` option controls how field values are indexed and, thus, how they
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are searchable. It accepts three values:
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[horizontal]
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`no`::
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Do not add this field value to the index. With this setting, the field
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will not be queryable.
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`not_analyzed`::
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Add the field value to the index unchanged, as a single term. This is the
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default for all fields that support this option except for
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<<string,`string`>> fields. `not_analyzed` fields are usually used with
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<<term-level-queries,term-level queries>> for structured search.
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`analyzed`::
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This option applies only to `string` fields, for which it is the default.
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The string field value is first <<analysis,analyzed>> to convert the
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string into terms (e.g. a list of individual words), which are then
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indexed. At search time, the query string is passed through
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(<<search-analyzer,usually>>) the same analyzer to generate terms
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in the same format as those in the index. It is this process that enables
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<<full-text-queries,full text search>>.
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For example, you can create a `not_analyzed` string field with the following:
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[source,js]
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--------------------------------------------------
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PUT /my_index
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{
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"mappings": {
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"my_type": {
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"properties": {
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"status_code": {
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"type": "string",
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"index": "not_analyzed"
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}
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}
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}
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}
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}
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--------------------------------------------------
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// AUTOSENSE |