AQL如何将文件以其收集名称收集到数组中?

问题描述

回答了先前的问题，该指南显示了如何使用其集合名称来收集文档，但是该查询存在明显的限制每个集合仅返回一个文档.

In answer to previous questions was shown how to collect documents under their collection names but there was a clear constraint that query returns only one document for each collection.

@CoDEmanX问查询是否返回相同集合的许多文档?

@CoDEmanX asked what if the query returns many documents of the same collection?

推荐答案

将不得不重做查询以使用聚合:

Will have to rework query to use aggregation:

FOR doc IN ANY "vertex/key" edge_collection
COLLECT collection = PARSE_IDENTIFIER(doc).collection INTO collected
RETURN MERGE({
    [collection]: collected[*].doc
})

• 按集合名称COLLECT collection = PARSE_IDENTIFIER(doc).collection INTO collected
对文档进行分组
• 以收集名称作为属性的表单文档，将收集的文档数组作为值{ [collection]: collected[*].doc }
• 将结果合并到单个文档中
• Group documents by their collection name COLLECT collection = PARSE_IDENTIFIER(doc).collection INTO collected
• Form document with collection name as property and array of collected documents as value { [collection]: collected[*].doc }
• Merge results into single document

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