mirror of https://gitee.com/bigwinds/arangodb
44 lines
1.3 KiB
Plaintext
44 lines
1.3 KiB
Plaintext
!CHAPTER AQL Examples
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This page contains some examples how to write queries in AQL. For better
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understandability the query results are also included directly below each query.
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!SECTION Simple queries
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Following is a query that returns a string value. The result string is contained in an array
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because the result of every valid query is an array:
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```js
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RETURN "this will be returned"
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[
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"this will be returned"
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]
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```
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Here is a query that creates the cross products of two arrays and runs a projection
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on it, using a few of AQL's built-in functions:
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```js
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FOR year in [ 2011, 2012, 2013 ]
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FOR quarter IN [ 1, 2, 3, 4 ]
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RETURN {
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"y" : "year",
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"q" : quarter,
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"nice" : CONCAT(TO_STRING(quarter), "/", TO_STRING(year))
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}
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[
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{ "y" : "year", "q" : 1, "nice" : "1/2011" },
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{ "y" : "year", "q" : 2, "nice" : "2/2011" },
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{ "y" : "year", "q" : 3, "nice" : "3/2011" },
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{ "y" : "year", "q" : 4, "nice" : "4/2011" },
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{ "y" : "year", "q" : 1, "nice" : "1/2012" },
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{ "y" : "year", "q" : 2, "nice" : "2/2012" },
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{ "y" : "year", "q" : 3, "nice" : "3/2012" },
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{ "y" : "year", "q" : 4, "nice" : "4/2012" },
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{ "y" : "year", "q" : 1, "nice" : "1/2013" },
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{ "y" : "year", "q" : 2, "nice" : "2/2013" },
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{ "y" : "year", "q" : 3, "nice" : "3/2013" },
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{ "y" : "year", "q" : 4, "nice" : "4/2013" }
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]
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```
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