原文地址: https://www.elastic.co/guide/en/elasticsearch/reference/7.7/sql-getting-started.html, 原文档版权归 www.elastic.co 所有
IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Getting Started with SQLedit
To start using Elasticsearch SQL, create an index with some data to experiment with:
PUT /library/book/_bulk?refresh
{"index":{"_id": "Leviathan Wakes"}}
{"name": "Leviathan Wakes", "author": "James S.A. Corey", "release_date": "2011-06-02", "page_count": 561}
{"index":{"_id": "Hyperion"}}
{"name": "Hyperion", "author": "Dan Simmons", "release_date": "1989-05-26", "page_count": 482}
{"index":{"_id": "Dune"}}
{"name": "Dune", "author": "Frank Herbert", "release_date": "1965-06-01", "page_count": 604}
And now you can execute SQL using the SQL REST API right away:
POST /_sql?format=txt
{
"query": "SELECT * FROM library WHERE release_date < '2000-01-01'"
}
Which should return something along the lines of:
author | name | page_count | release_date ---------------+---------------+---------------+------------------------ Dan Simmons |Hyperion |482 |1989-05-26T00:00:00.000Z Frank Herbert |Dune |604 |1965-06-01T00:00:00.000Z
You can also use the SQL CLI. There is a script to start it shipped in x-pack’s bin directory:
$ ./bin/elasticsearch-sql-cli
From there you can run the same query:
sql> SELECT * FROM library WHERE release_date < '2000-01-01';
author | name | page_count | release_date
---------------+---------------+---------------+------------------------
Dan Simmons |Hyperion |482 |1989-05-26T00:00:00.000Z
Frank Herbert |Dune |604 |1965-06-01T00:00:00.000Z