77 lines
1.3 KiB
Plaintext
77 lines
1.3 KiB
Plaintext
[[mapping-size-field]]
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=== `_size` field
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The `_size` field, when enabled, indexes the size in bytes of the original
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<<mapping-source-field,`_source`>>. In order to enable it, set
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the mapping as follows:
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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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"_size": {
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"enabled": true
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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
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The value of the `_size` field is accessible in queries, aggregations, scripts,
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and when sorting:
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[source,js]
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--------------------------
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# Example documents
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PUT my_index/my_type/1
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{
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"text": "This is a document"
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}
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PUT my_index/my_type/2
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{
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"text": "This is another document"
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}
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GET my_index/_search
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{
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"query": {
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"range": {
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"_size": { <1>
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"gt": 10
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}
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}
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},
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"aggs": {
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"Sizes": {
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"terms": {
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"field": "_size", <2>
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"size": 10
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}
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}
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},
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"sort": [
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{
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"_size": { <3>
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"order": "desc"
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}
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}
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],
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"script_fields": {
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"Size": {
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"script": "doc['_size']" <4>
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}
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}
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}
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--------------------------
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// AUTOSENSE
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<1> Querying on the `_size` field
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<2> Aggregating on the `_size` field
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<3> Sorting on the `_size` field
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<4> Accessing the `_size` field in scripts (inline scripts must be <<enable-dynamic-scripting,enabled>> for this example to work)
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