33 lines
2 KiB
JSON
33 lines
2 KiB
JSON
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{
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"db_name": "PostgreSQL",
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"query": "WITH RECURSIVE item_class_children AS (\n SELECT\n item_classes.id,\n array_remove(array_agg(children.id), NULL) AS \"children\"\n FROM item_classes\n LEFT JOIN item_classes AS \"children\"\n ON item_classes.id = children.parent\n GROUP BY item_classes.id\n ),\n cte AS (\n SELECT\n item_classes.id,\n item_classes.name,\n item_class_children.children,\n 0 AS \"reverse_level\"\n FROM item_classes\n JOIN item_class_children\n ON item_classes.id = item_class_children.id\n WHERE item_class_children.children = '{}'\n\n UNION\n\n SELECT\n item_classes.id,\n item_classes.name,\n item_class_children.children,\n cte.reverse_level + 1\n FROM item_classes\n JOIN item_class_children\n ON item_classes.id = item_class_children.id\n JOIN cte\n ON cte.id = ANY (item_class_children.children)\n )\n SELECT\n id AS \"id!\",\n name AS \"name!\",\n children AS \"children!\"\n FROM cte\n GROUP BY id, name, children\n ORDER BY max(reverse_level)",
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"describe": {
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"columns": [
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{
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"ordinal": 0,
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"name": "id!",
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"type_info": "Uuid"
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},
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{
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"ordinal": 1,
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"name": "name!",
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"type_info": "Varchar"
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},
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{
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"ordinal": 2,
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"name": "children!",
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"type_info": "UuidArray"
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}
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],
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"parameters": {
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"Left": []
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},
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"nullable": [
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null,
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null,
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null
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]
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},
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"hash": "689a5177bdbc4ac788579a47fe033eb6b9639a356fe7ec543691e385ffef51e7"
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}
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