> For the complete documentation index, see [llms.txt](https://query.docs.doyto.win/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://query.docs.doyto.win/object-concepts.md).

# Object Concepts

- [Query Object](https://query.docs.doyto.win/object-concepts/query-object.md)
- [PageQuery](https://query.docs.doyto.win/object-concepts/query-object/page-query.md)
- [Predicate-Suffix Field](https://query.docs.doyto.win/object-concepts/query-object/predicate-suffix-field.md)
- [Logic-Suffix Field](https://query.docs.doyto.win/object-concepts/query-object/logic-suffix-field.md)
- [Subquery Field](https://query.docs.doyto.win/object-concepts/query-object/subquery-field.md)
- [E-R Query Field](https://query.docs.doyto.win/object-concepts/query-object/er-query-field.md)
- [Custom Condition Field](https://query.docs.doyto.win/object-concepts/query-object/custom-condition-field.md)
- [Entity Object](https://query.docs.doyto.win/object-concepts/entity-object.md)
- [Enum Column](https://query.docs.doyto.win/object-concepts/entity-object/enum-field.md)
- [Foreign Key](https://query.docs.doyto.win/object-concepts/entity-object/foreign-key.md)
- [Sharding](https://query.docs.doyto.win/object-concepts/entity-object/sharding.md)
- [Patch Object](https://query.docs.doyto.win/object-concepts/patch-object.md)
- [View Object](https://query.docs.doyto.win/object-concepts/view-object.md)
- [Column Mapping](https://query.docs.doyto.win/object-concepts/view-object/column-mapping.md)
- [Group By Mapping](https://query.docs.doyto.win/object-concepts/view-object/group-by.md)
- [Inner Join](https://query.docs.doyto.win/object-concepts/view-object/inner-join.md)
- [Outer Join](https://query.docs.doyto.win/object-concepts/view-object/outer-join.md)
- [Having Object](https://query.docs.doyto.win/object-concepts/having-object.md)