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d684119618
Together with types removal, any mention of "fields with the same name in the same index" doesn't make sense anymore. (cherry picked from commit c5190106cbd4c007945156249cce462956933326)
89 lines
2.0 KiB
Plaintext
89 lines
2.0 KiB
Plaintext
[[coerce]]
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=== `coerce`
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Data is not always clean. Depending on how it is produced a number might be
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rendered in the JSON body as a true JSON number, e.g. `5`, but it might also
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be rendered as a string, e.g. `"5"`. Alternatively, a number that should be
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an integer might instead be rendered as a floating point, e.g. `5.0`, or even
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`"5.0"`.
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Coercion attempts to clean up dirty values to fit the datatype of a field.
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For instance:
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* Strings will be coerced to numbers.
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* Floating points will be truncated for integer values.
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For instance:
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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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"properties": {
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"number_one": {
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"type": "integer"
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},
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"number_two": {
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"type": "integer",
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"coerce": false
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}
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}
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}
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}
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PUT my_index/_doc/1
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{
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"number_one": "10" <1>
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}
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PUT my_index/_doc/2
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{
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"number_two": "10" <2>
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}
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--------------------------------------------------
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// CONSOLE
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// TEST[catch:bad_request]
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<1> The `number_one` field will contain the integer `10`.
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<2> This document will be rejected because coercion is disabled.
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TIP: The `coerce` setting value can be updated on existing fields
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using the <<indices-put-mapping,PUT mapping API>>.
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[[coerce-setting]]
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==== Index-level default
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The `index.mapping.coerce` setting can be set on the index level to disable
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coercion globally across all mapping types:
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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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"settings": {
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"index.mapping.coerce": false
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},
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"mappings": {
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"properties": {
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"number_one": {
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"type": "integer",
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"coerce": true
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},
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"number_two": {
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"type": "integer"
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}
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}
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}
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}
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PUT my_index/_doc/1
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{ "number_one": "10" } <1>
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PUT my_index/_doc/2
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{ "number_two": "10" } <2>
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--------------------------------------------------
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// CONSOLE
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// TEST[catch:bad_request]
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<1> The `number_one` field overrides the index level setting to enable coercion.
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<2> This document will be rejected because the `number_two` field inherits the index-level coercion setting.
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