How to use Wildcards for Multi-Index Search In Databases
You can also use wildcards to search across multiple indices that follow a certain naming pattern.
Example: Searching Indices with Wildcards
Let’s search all indices starting with log_data for entries containing the term “error“.
GET /log_data*/_search
{
"query": {
"match": {
"message": "error"
}
}
}
In this example:
- The wildcard log_data* matches indices like log_data_2023, log_data_2024, etc.
- The match query searches for the term “error” in the message field across all matching indices.
Elasticsearch Multi Index Search
In Elasticsearch, multi-index search refers to the capability of querying across multiple indices simultaneously. This feature is particularly useful when you have different types of data stored in separate indices and need to search across them in a single query. In this article, we’ll explore what multi-index search is, why it’s important, and how to use it effectively with practical examples.
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