{
  "$defs": {
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      "oneOf": [
        {
          "required": [
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          ]
        },
        {
          "required": [
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          ]
        },
        {
          "required": [
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          ]
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      ],
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        },
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          "type": [
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            "number",
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        }
      },
      "type": "object"
    },
    "comparison": {
      "additionalProperties": false,
      "properties": {
        "left": {
          "$ref": "#/$defs/expression"
        },
        "op": {
          "enum": [
            "\u003c",
            "\u003c=",
            "==",
            "\u003e",
            "\u003e=",
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          "$ref": "#/$defs/expression"
        }
      },
      "required": [
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        "left",
        "right"
      ],
      "type": "object"
    },
    "condition": {
      "oneOf": [
        {
          "$ref": "#/$defs/comparison"
        },
        {
          "$ref": "#/$defs/group"
        }
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    },
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        {
          "required": [
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          ]
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          "required": [
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      ],
      "properties": {
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      "properties": {
        "alias": {
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          "minLength": 1,
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      "type": "object"
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          "required": [
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      "properties": {
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            "$ref": "#/$defs/condition"
          },
          "type": "array"
        },
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          "items": {
            "$ref": "#/$defs/condition"
          },
          "type": "array"
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      },
      "type": "object"
    },
    "order": {
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          "required": [
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        },
        {
          "required": [
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          "required": [
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  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "additionalProperties": false,
  "description": "YAML serialization of dalgo's dal.StructuredQuery (core relational read-only subset).",
  "properties": {
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      "items": {
        "$ref": "#/$defs/column"
      },
      "type": "array"
    },
    "from": {
      "$ref": "#/$defs/from"
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    "limit": {
      "minimum": 0,
      "type": "integer"
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    "offset": {
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      "type": "integer"
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    "orderBy": {
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        "$ref": "#/$defs/order"
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      "type": "array"
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    "where": {
      "$ref": "#/$defs/condition"
    }
  },
  "required": [
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  "title": "DTQL",
  "type": "object"
}