---
title: Model: Expression
slug: data-platform/api/model-expression
docTags: 
createdAt: 2026-09-04T17:08:55.471Z
---

### Code examples

```json
{
  "combination": {
    "conjunction": "CONJUNCTION_NOT_SET",
    "expressions": [
      {
        "": ""
      }
    ]
  },
  "comparison": {
    "lhs": {
      "": ""
    },
    "comparator": "COMPARATOR_NOT_SET",
    "rhs": {
      "": ""
    }
  },
  "path_reference": {
    "value": ""
  },
  "string_literal": {
    "value": ""
  },
  "number_literal": {
    "value": ""
  },
  "boolean_literal": {
    "value": false
  },
  "is_missing": {
    "source": {
      "": ""
    }
  },
  "is_not_missing": {
    "source": {
      "": ""
    }
  },
  "false_or_missing": {
    "source": {
      "": ""
    }
  },
  "true_or_missing": {
    "source": {
      "": ""
    }
  },
  "coalesce": {
    "sources": [
      {
        "": ""
      }
    ]
  },
  "truncate_time": {
    "source": {
      "": ""
    },
    "unit": "TIME_UNIT_NOT_SET",
    "timezone": {
      "": ""
    }
  },
  "shift_time": {
    "source": {
      "": ""
    },
    "amount": {
      "": ""
    },
    "unit": "TIME_UNIT_NOT_SET",
    "timezone": {
      "": ""
    }
  },
  "any_of_string": {
    "needle": {
      "": ""
    },
    "haystack": [
      ""
    ]
  },
  "any_of_number": {
    "needle": {
      "": ""
    },
    "haystack": [
      ""
    ]
  },
  "none_of_string": {
    "needle": {
      "": ""
    },
    "haystack": [
      ""
    ]
  },
  "none_of_number": {
    "needle": {
      "": ""
    },
    "haystack": [
      ""
    ]
  },
  "like_any_of_string": {
    "needle": {
      "": ""
    },
    "haystack": [
      ""
    ]
  },
  "like_none_of_string": {
    "needle": {
      "": ""
    },
    "haystack": [
      ""
    ]
  },
  "is_list_member": {
    "list": ""
  },
  "is_not_list_member": {
    "list": ""
  }
}
```