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# CategoryQuery

Allows you to query IDOL Server with a category.

## Example

    http://12.3.4.56:9000/action=CategoryQuery&Category=32349987602210557106

This action uses port `9000` to instruct IDOL Server, which is located on a machine with the IP address `12.3.4.56`, to match the category with the ID `32349987602210557106` against all its databases and return results that match the category training.

## Parameters

Parameter | Description | Required
--- | --- | ---
Category | The ID of the category to use to query. | Yes
Databases | Restricts results to certain databases. |
DocCountOnly | Return only the number of available results. |
ExpandBoolean | Whether to expand Boolean category training in the category definition. |
ExpandTopics | Whether to expand VQL topic names in the category definition. |
FieldText | A field restriction to apply to the category results. |
MatchEncoding | Restricts results to documents with the specified encodings. |
MatchLanguage | Restricts results to documents with the specified languages. |
MatchLanguageType | Restricts results to documents with the specified language types. |
NumResults | The number of results to return. |
Params | Add Query action parameters to the category query. |
Predict | Predicts the total number of results. |
PrintFields | The fields to display in the results. |
QueryText | Adds text to the category query, to return only results that match the category and text. |
SecurityInfo | The security details for the user that sends the action. |
Start | The number of the first result to return. |
StoredStateDetail | Whether to return additional elements for result documents, as well as child server details, when the data index is a DAH. |
StoreState | Whether to store results in a state token. |
Threshold | The relevance threshold of results. |
TotalResults | Whether to display the total number of hits found. |
UserName | The name of the user that sends the action. |
Values | Values for the specified Params. |

This action accepts the following standard ACI action parameters.

Parameter | Description
--- | ---
ActionID | A string to use to identify an ACI action.
EncryptResponse | Encrypt the output.
FileName | The file to write output to.
ForceTemplateRefresh | Forces the server to load the template from disk.
Output | Writes output to a file.
ResponseFormat | The format of the action output.
Template | The template to use for the action output.
TemplateParamCSVs | A list of variables to use for the specified template.

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