当您将'RestaurantName'作为文本字段索引时，“Standard”分析器包含小写过滤器，“lowercase”令牌过滤器使字段不区分大小写，这意味着lucene中的所有令牌都是小写的。
首先，您应该在RestaurantName字段中添加一个额外的关键字类型。

{
    "mappings": {
        "properties": {
            "RestaurantName": {
                "type": "text",
                "fields": {
                    "keyword": {
                        "type": "keyword",
                        "ignore_above": 256
                    }
                }
            }
        }
    }
}

使用通配符搜索，

{
    "query": {
        "bool": {
            "must": [
                {
                    "wildcard": {
                        "RestaurantName.keyword": {
                            "value": "*Pizz*"
                        }
                    }
                }
            ],
            "must_not": [
                {
                    "match": {
                        "RestaurantName": "pizza"
                    }
                },
                {
                    "match": {
                        "RestaurantName": "pizzeria"
                    }
                }
            ]
        }
    }
}

结果是，

{
    "took": 8,
    "timed_out": false,
    "_shards": {
        "total": 1,
        "successful": 1,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": {
            "value": 3,
            "relation": "eq"
        },
        "max_score": 1.0,
        "hits": [
            {
                "_index": "pizza",
                "_type": "_doc",
                "_id": "1L6ob4cB6Rdc8HbDY8vi",
                "_score": 1.0,
                "_source": {
                    "RestaurantName": "Fozzie's Pizzaiolo"
                }
            },
            {
                "_index": "pizza",
                "_type": "_doc",
                "_id": "1b6ob4cB6Rdc8HbDg8tA",
                "_score": 1.0,
                "_source": {
                    "RestaurantName": "PizzaVito"
                }
            },
            {
                "_index": "pizza",
                "_type": "_doc",
                "_id": "1r6ob4cB6Rdc8HbDmMuJ",
                "_score": 1.0,
                "_source": {
                    "RestaurantName": "Pizzalicious"
                }
            }
        ]
    }
}