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

# 预测市场

> PredictionTrades、PredictionManagements 与 PredictionSettlements Cubes 的查询示例

## 概述

ChainStream GraphQL 提供三个用于预测市场数据的 Cube，主要覆盖 Polygon。这些 Cube 覆盖预测市场从创建、交易到结算的完整生命周期。

<Note>
  预测市场 Cube 位于 **EVM** 链组中，通常与 `network: polygon` 一起使用。
</Note>

***

## PredictionTrades

### 近期预测市场交易

```graphql theme={null}
query {
  EVM(network: polygon) {
    PredictionTrades(
      limit: {count: 20}
      orderBy: {descending: Block_Time}
    ) {
      Block { Time }
      Transaction { Hash }
      Trade {
        Buyer
        Seller
        Amount
        Price
        Fee
      }
      Prediction {
        Condition { Id Outcomes }
        Question { Id }
        Outcome
        Marketplace { ProtocolName }
      }
    }
  }
}
```

### 指定条件的交易

```graphql theme={null}
query {
  EVM(network: polygon) {
    PredictionTrades(
      conditionId: {is: "CONDITION_ID"}
      limit: {count: 50}
      orderBy: {descending: Block_Time}
    ) {
      Block { Time }
      Trade { Buyer Seller Amount Price }
      Prediction { Outcome OutcomeToken { SmartContract } }
    }
  }
}
```

### 按交易平台的成交量

```graphql theme={null}
query {
  EVM(network: polygon) {
    PredictionTrades(
      marketplace: {is: "Polymarket"}
      limit: {count: 100}
      orderBy: {descending: Block_Time}
    ) {
      Block { Time }
      Trade { Amount Price }
      Prediction {
        Question { Id }
        Marketplace { ProtocolName }
      }
      count
      sum(of: Trade_Amount)
    }
  }
}
```

***

## PredictionManagements

### 市场创建与结算事件

```graphql theme={null}
query {
  EVM(network: polygon) {
    PredictionManagements(
      limit: {count: 20}
      orderBy: {descending: Block_Time}
    ) {
      Block { Time }
      Transaction { Hash }
      Management {
        EventType
        Description
        Group
        Prediction {
          Condition { Id }
          Question { Id }
          Marketplace { ProtocolName }
        }
      }
    }
  }
}
```

### 按事件类型筛选

```graphql theme={null}
query {
  EVM(network: polygon) {
    PredictionManagements(
      eventType: {is: "ConditionResolution"}
      limit: {count: 20}
      orderBy: {descending: Block_Time}
    ) {
      Block { Time }
      Management {
        EventType
        Description
        Prediction { Condition { Id Outcomes } }
      }
    }
  }
}
```

***

## PredictionSettlements

### 近期结算

```graphql theme={null}
query {
  EVM(network: polygon) {
    PredictionSettlements(
      limit: {count: 20}
      orderBy: {descending: Block_Time}
    ) {
      Block { Time }
      Transaction { Hash }
      Settlement {
        EventType
        Holder
        OutcomeTokenIds
        Amounts
        Prediction {
          Condition { Id }
          CollateralToken { SmartContract Symbol }
          Marketplace { ProtocolName }
        }
      }
    }
  }
}
```

### 指定持有人的结算

```graphql theme={null}
query {
  EVM(network: polygon) {
    PredictionSettlements(
      holder: {is: "0xHOLDER_ADDRESS"}
      limit: {count: 50}
      orderBy: {descending: Block_Time}
    ) {
      Block { Time }
      Settlement {
        EventType
        Amounts
        Prediction { Condition { Id } }
      }
    }
  }
}
```

***

## 相关文档

<CardGroup cols={2}>
  <Card title="数据 Cube" icon="cubes" href="/cn/graphql/schema/cubes">
    预测市场 Cube 的详细字段结构。
  </Card>

  <Card title="链组" icon="layer-group" href="/cn/graphql/schema/chain-groups">
    预测类 Cube 仅支持 EVM，主要在 Polygon 上。
  </Card>
</CardGroup>