# StructuredQueryOutputParser

> **Class** in `langchain_classic`

📖 [View in docs](https://reference.langchain.com/python/langchain-classic/chains/query_constructor/base/StructuredQueryOutputParser)

Output parser that parses a structured query.

## Signature

```python
StructuredQueryOutputParser()
```

## Extends

- `BaseOutputParser[StructuredQuery]`

## Properties

- `ast_parse`

## Methods

- [`parse()`](https://reference.langchain.com/python/langchain-classic/chains/query_constructor/base/StructuredQueryOutputParser/parse)
- [`from_components()`](https://reference.langchain.com/python/langchain-classic/chains/query_constructor/base/StructuredQueryOutputParser/from_components)

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[View source on GitHub](https://github.com/langchain-ai/langchain/blob/f0c5a28fa05adcda89aebcb449d897245ab21fa4/libs/langchain/langchain_classic/chains/query_constructor/base.py#L44)