{"record":{"id":"98f0c6e50ed205b2","repo":"chroma-core/chroma","slug":"operator-dict-for-field-field-cannot-be-empty","errorCode":null,"errorMessage":"Operator dict for field '{field}' cannot be empty","messagePattern":"Operator dict for field '(.+?)' cannot be empty","errorType":"validation","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"chromadb/execution/expression/operator.py","lineNumber":153,"sourceCode":"\n        else:\n            # Single field condition\n            if len(data) != 1:\n                raise ValueError(\n                    f\"Where dict must contain exactly one field, got {len(data)}\"\n                )\n\n            field, condition = next(iter(data.items()))\n\n            if not isinstance(field, str):\n                raise TypeError(\n                    f\"Field name must be a string, got {type(field).__name__}\"\n                )\n\n            if isinstance(condition, dict):\n                # Operator-based condition\n                if not condition:\n                    raise ValueError(\n                        f\"Operator dict for field '{field}' cannot be empty\"\n                    )\n                if len(condition) != 1:\n                    raise ValueError(\n                        f\"Operator dict for field '{field}' must contain exactly one operator\"\n                    )\n\n                op, value = next(iter(condition.items()))\n\n                if op == \"$eq\":\n                    return Key(field) == value\n                elif op == \"$ne\":\n                    return Key(field) != value\n                elif op == \"$gt\":\n                    return Key(field) > value\n                elif op == \"$gte\":\n                    return Key(field) >= value\n                elif op == \"$lt\":","sourceCodeStart":135,"sourceCodeEnd":171,"githubUrl":"https://github.com/chroma-core/chroma/blob/aecdd12c8a891610db8653630b066b32ceb678b5/chromadb/execution/expression/operator.py#L135-L171","documentation":"Error \"Operator dict for field '{field}' cannot be empty\" thrown in chroma-core/chroma.","triggerScenarios":"Thrown at chromadb/execution/expression/operator.py:153 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"aecdd12c8a891610db8653630b066b32ceb678b5","analyzedAt":"2026-08-16T21:53:27.228Z","schemaVersion":2},"datasetVersion":"2026-08-16T23:17:17.608Z"}