> ## Documentation Index
> Fetch the complete documentation index at: https://docs.allium.so/llms.txt
> Use this file to discover all available pages before exploring further.

# Traces

### Table Columns

Unique Key: `trace_id`

| Column Name        | Data Type         | Description                                                                                                                                                                               |
| ------------------ | ----------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| transaction\_hash  | VARCHAR           | Unique identifier of the transaction that this trace belongs to.                                                                                                                          |
| transaction\_index | BIGINT            | The position of this transaction in the block that it belongs to. The first transaction has index 0.                                                                                      |
| from\_address      | VARCHAR           | The address of the sending party of this transaction.                                                                                                                                     |
| to\_address        | VARCHAR           | The address of the receiving party of this transaction, typically a contract address for traces.                                                                                          |
| value              | VARCHAR           | The amount of gas token moved from the `from_address` to `to_address`.                                                                                                                    |
| input              | VARCHAR           | The bytecode of the call that is made to another smart contract.                                                                                                                          |
| output             | VARCHAR           | The bytecode answer the smart contract that was called gives back.                                                                                                                        |
| trace\_type        | VARCHAR           | The value of the method such as `call`, `create`, `create2`, `suicide`.                                                                                                                   |
| call\_type         | VARCHAR           | [The type of method such as `call`, `delegatecall`, `staticcall`. Learn more here.](https://medium.com/coinmonks/delegatecall-calling-another-contract-function-in-solidity-b579f804178c) |
| reward\_type       | VARCHAR           | Populated when `trace_type`=reward. Possible values: `block`, `uncle`.                                                                                                                    |
| gas                | BIGINT            | Gas provided with the trace call, in wei.                                                                                                                                                 |
| gas\_used          | BIGINT            | The amount of gas consumed, in wei.                                                                                                                                                       |
| subtraces          | BIGINT            | Number of children traces.                                                                                                                                                                |
| trace\_address     | VARCHAR           | The address of the trace within the call graph.                                                                                                                                           |
| error              | VARCHAR           | Human-readable developer error message. Examples: "Out of gas", "Reverted", "Bad instruction", "Bad jump destination".                                                                    |
| status             | BIGINT            | Success status of the trace. Either `1` (success) or `0` (failure).                                                                                                                       |
| block\_timestamp   | TIMESTAMP\_NTZ(9) | The time when the block that contains this trace was included on the blockchain.                                                                                                          |
| block\_number      | BIGINT            | The length of the chain, in blocks.                                                                                                                                                       |
| block\_hash        | VARCHAR           | Unique identifier of the block that includes this trace.                                                                                                                                  |
| trace\_id          | VARCHAR           | Unique identifier for this trace. Generated by combining the `trace_type`, `transaction_hash`, and `trace_address`.                                                                       |
| selector           | VARCHAR           | 4-bytes of the input data.                                                                                                                                                                |
| \_created\_at      | TIMESTAMP\_NTZ(9) | Timestamp of the entry creation.                                                                                                                                                          |
| \_updated\_at      | TIMESTAMP\_NTZ(9) | Timestamp of the entry update.                                                                                                                                                            |