[
  {
    "description": "Lineage: the self-referential base edge (entity.parent_id -> entity) is always read from the parent down",
    "database": {
      "puncs": [],
      "enums": [],
      "relations": [
        {
          "id": "44444444-4444-4444-4444-444444444441",
          "type": "relation",
          "constraint": "fk_entity_parent",
          "source_type": "entity",
          "source_columns": [
            "parent_id"
          ],
          "destination_type": "entity",
          "destination_columns": [
            "id"
          ]
        }
      ],
      "types": [
        {
          "name": "entity",
          "hierarchy": [
            "entity"
          ],
          "fields": [
            "id",
            "type",
            "archived",
            "created_at",
            "parent_id",
            "ancestors"
          ],
          "grouped_fields": {
            "entity": [
              "id",
              "type",
              "archived",
              "created_at",
              "parent_id",
              "ancestors"
            ]
          },
          "field_types": {
            "id": "uuid",
            "type": "text",
            "archived": "boolean",
            "created_at": "timestamptz",
            "parent_id": "uuid",
            "ancestors": "uuid[]"
          },
          "schemas": {
            "entity": {
              "type": "object",
              "properties": {
                "id": {
                  "type": "string",
                  "format": "uuid"
                },
                "type": {
                  "type": "string"
                },
                "archived": {
                  "type": "boolean"
                },
                "created_at": {
                  "type": "string",
                  "format": "date-time"
                },
                "created": {
                  "type": "boolean"
                },
                "parent_id": {
                  "type": [
                    "string",
                    "null"
                  ],
                  "format": "uuid"
                },
                "ancestors": {
                  "type": "array",
                  "items": {
                    "type": "string",
                    "format": "uuid"
                  }
                }
              }
            }
          },
          "lookup_fields": [],
          "historical": true,
          "relationship": false,
          "variations": [
            "entity",
            "invoice",
            "invoice_line"
          ]
        },
        {
          "name": "invoice",
          "hierarchy": [
            "entity",
            "invoice"
          ],
          "fields": [
            "id",
            "type",
            "total",
            "archived",
            "created_at",
            "parent_id",
            "ancestors"
          ],
          "grouped_fields": {
            "invoice": [
              "id",
              "type",
              "total"
            ],
            "entity": [
              "id",
              "type",
              "archived",
              "created_at",
              "parent_id",
              "ancestors"
            ]
          },
          "field_types": {
            "id": "uuid",
            "type": "text",
            "archived": "boolean",
            "created_at": "timestamptz",
            "parent_id": "uuid",
            "ancestors": "uuid[]",
            "total": "numeric"
          },
          "schemas": {
            "invoice": {
              "type": "entity",
              "properties": {
                "total": {
                  "type": "number"
                },
                "lines": {
                  "type": "array",
                  "items": {
                    "type": "invoice_line"
                  }
                },
                "first_line": {
                  "type": "invoice_line"
                }
              }
            }
          },
          "lookup_fields": [],
          "historical": true,
          "relationship": false,
          "variations": [
            "invoice"
          ]
        },
        {
          "name": "invoice_line",
          "hierarchy": [
            "entity",
            "invoice_line"
          ],
          "fields": [
            "id",
            "type",
            "price",
            "archived",
            "created_at",
            "parent_id",
            "ancestors"
          ],
          "grouped_fields": {
            "invoice_line": [
              "id",
              "type",
              "price"
            ],
            "entity": [
              "id",
              "type",
              "archived",
              "created_at",
              "parent_id",
              "ancestors"
            ]
          },
          "field_types": {
            "id": "uuid",
            "type": "text",
            "archived": "boolean",
            "created_at": "timestamptz",
            "parent_id": "uuid",
            "ancestors": "uuid[]",
            "price": "numeric"
          },
          "schemas": {
            "invoice_line": {
              "type": "entity",
              "properties": {
                "price": {
                  "type": "number"
                }
              }
            }
          },
          "lookup_fields": [],
          "historical": true,
          "relationship": false,
          "variations": [
            "invoice_line"
          ]
        }
      ]
    },
    "tests": [
      {
        "description": "An array of children joins child.parent_id = parent.id, never the other way",
        "action": "query",
        "schema_id": "invoice",
        "expect": {
          "success": true,
          "sql": [
            [
              "((SELECT jsonb_strip_nulls((",
              "  SELECT jsonb_build_object(",
              "    'id', invoice_2.id,",
              "    'type', invoice_2.type,",
              "    'archived', entity_1.archived,",
              "    'created_at', entity_1.created_at,",
              "    'parent_id', entity_1.parent_id,",
              "    'ancestors', entity_1.ancestors,",
              "    'total', invoice_2.total,",
              "    'lines', (",
              "      SELECT COALESCE(jsonb_agg(jsonb_build_object(",
              "        'id', invoice_line_4.id,",
              "        'type', invoice_line_4.type,",
              "        'archived', entity_3.archived,",
              "        'created_at', entity_3.created_at,",
              "        'parent_id', entity_3.parent_id,",
              "        'ancestors', entity_3.ancestors,",
              "        'price', invoice_line_4.price",
              "      )), '[]'::jsonb)",
              "      FROM agreego.entity entity_3",
              "      JOIN agreego.invoice_line invoice_line_4 ON invoice_line_4.id = entity_3.id",
              "      WHERE",
              "        NOT entity_3.archived",
              "        AND entity_3.parent_id = entity_1.id",
              "    ),",
              "    'first_line', (",
              "      SELECT jsonb_build_object(",
              "        'id', invoice_line_6.id,",
              "        'type', invoice_line_6.type,",
              "        'archived', entity_5.archived,",
              "        'created_at', entity_5.created_at,",
              "        'parent_id', entity_5.parent_id,",
              "        'ancestors', entity_5.ancestors,",
              "        'price', invoice_line_6.price",
              "      )",
              "      FROM agreego.entity entity_5",
              "      JOIN agreego.invoice_line invoice_line_6 ON invoice_line_6.id = entity_5.id",
              "      WHERE",
              "        NOT entity_5.archived",
              "        AND entity_5.parent_id = entity_1.id",
              "      LIMIT 1",
              "    )",
              "  )",
              "  FROM agreego.entity entity_1",
              "  JOIN agreego.invoice invoice_2 ON invoice_2.id = entity_1.id",
              "  WHERE",
              "    NOT entity_1.archived",
              "))))"
            ]
          ]
        }
      }
    ]
  }
]