Hybrid Search with Multiple Keyword Fields in the Book Store Schema

Kishore Nallan i want to use hybrid search with multiple keyword field like book_title,author ,publication can you suggest me what i should pass in query_by

 "searches": [
        {
          "query_by": "product_name,embedding",
          "q": "desktop copier",
          "collection": "products",
          "prefix": "false",
          "exclude_fields": "embedding",
          "per_page": 2
        }

There can be only one embedding field but can have multiple string fields for keyword search.

Kishore Nallan only one embedding field means

You can refer to the docs here

https://typesense.org/docs/0.25.1/api/vector-search.html#index-embeddings

Kishore Nallan books_schema = {
'name': collection_name,
'fields': [
{'name': 'bookId', 'type': 'int32','facet': True},
{'name': 'id', 'type': 'string'},
{'name': 'isbn', 'type': 'string','facet': True,'optional':True},
{'name': 'title', 'type': 'string'},
{'name': 'slug', 'type': 'string'},
{'name': 'isOutOfStock', 'type': 'string', 'facet': True},
{'name': 'author', 'type': 'string', 'facet': True},
{'name': 'bookCondition', 'type': 'string[]', 'facet': True, 'optional':True},
{'name': 'subject', 'type': 'string', 'facet': True, 'optional':True},
{'name': 'publication','type': 'string', 'facet': True,'optional':True},
{'name': 'category', 'type': 'string', 'facet': True},
{'name': 'qty', 'type': 'int32'},
{'name': 'bookDescription', 'type': 'string', 'optional':True},
{'name': 'binding', 'type': 'string', 'facet': True},
{'name': 'language', 'type': 'string', 'facet': True},
{'name': 'keywords', 'type': 'string', 'facet': True, 'optional':True},
{'name': 'bookType', 'type': 'int32', 'facet': True},
{'name': 'iDate', 'type': 'int32'},
{'name': 'parentCategory', 'type': 'string', 'facet': True},
{'name': 'num_is_out_of_stack', 'type': 'int32'},
{'name': 'uDate', 'type': 'int32'},
{'name': 'mrp', 'type': 'int32', 'facet': True},
{'name': 'price', 'type': 'int32', 'facet': True},
{'name': 'discounPercent', 'type': 'int32', 'facet': True, 'optional':True},
{'name': 'cashbackPercent', 'type': 'int32', 'facet': True, 'optional':True},
{'name': 'agedGroup', 'type': 'string', 'facet': True , 'optional':True},
{'name': 'imageUrl', 'type': 'string', 'facet': False},
{'name': 'categorySuggestion', 'type': 'string', 'facet': False , 'optional':True},
{'name': 'categoryPathId', 'type': 'string[]', 'facet': False,'optional':True},


],
"symbols_to_index": ["(", ")", "+", "?" ],

'default_sorting_field': 'bookId'
} this is book store schema i want to embeded title , categorySuggestion