精华内容
下载资源
问答
  • 1. 报错: ### Cause: java.sql.SQLSyntaxErrorException: ORA-00911: ... nested exception is java.sql.SQLSyntaxErrorException: ORA-00911: 无效字符 2.出错 原因: 1) sql在数据库执行都是OK的。 真...

    前些天发现了一个巨牛的人工智能学习网站,通俗易懂,风趣幽默,忍不住分享一下给大家。点击跳转到教程。

     

    1. 报错:

    ### Cause: java.sql.SQLSyntaxErrorException: ORA-00911: 无效字符
    
    ; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: ORA-00911: 无效字符
    
    

    2.出错 原因:

    1)  sql在数据库执行都是OK的。  

    真正的原因是: 在mybatis 中sql结尾处多了一个" ; " 去掉就可以了。

    2)  mybatis ,我查出的数据在resultMap中没有对应的映射字段来匹配,查到的结果无法全部填充到对象属性才报错的。

    即:

      SELECT 
                  DISTINCT allData.time AS CREATE_DATE,         
                  allData.FORMAT AS FORMAT,           
                  allData.ORDER_TYPE  AS ORDER_TYPE,
                  allData.ORDER_TYPE_DEC  AS ORDER_TYPE_DEC,
                  allData.ACCOUNT  AS ACCOUNT....

    中FORMAT 对应的 <result property="format" column="FORMAT" jdbcType="INTEGER" />  忘了写了。

     

    展开全文
  • <div><p>Nested Avro to Nested ORC conversion support: The added code generates queries to create a nested ORC table (without any modification / flattening to Avro table schema) and insert into the ...
  • Nested Aggregation A special single bucket aggregation that enables aggregating nested documents. 一种特殊的单桶聚合,可聚合嵌套文档。 Reverse nested Aggregation A special single bucket aggregation ...

    ElasticSearch Version:6.2.2

    Nested Aggregation
    A special single bucket aggregation that enables aggregating nested documents.
    一种特殊的单桶聚合,可聚合嵌套文档。

    Reverse nested Aggregation
    A special single bucket aggregation that enables aggregating on parent docs from nested documents. Effectively this aggregation can break out of the nested block structure and link to other nested structures or the root document, which allows nesting other aggregations that aren’t part of the nested object in a nested aggregation.

    The reverse_nested aggregation must be defined inside a nested
    aggregation.
    一种特殊的单桶聚合,支持从嵌套文档中聚合父文档。实际上,这种聚合可以脱离嵌套块结构,并链接到其他嵌套结构或根文档,这允许嵌套不属于嵌套聚合中嵌套对象的其他聚合。reverse_nested聚合必须在嵌套聚合中定义。

    DSL:

    
    {
    	"size": 0,
    	"query": {
    		"bool": {
    			"filter": [{
    				"term": {
    					"params1": {
    						"value": 0,
    						"boost": 1.0
    					}
    				}
    			}, {
    				"nested": {
    					"query": {
    						"bool": {
    							"filter": [{
    								"bool": {
    									"should": [{
    										"bool": {
    											"filter": [{
    												"term": {
    													"nestedObject.params2": {
    														"value": 0,
    														"boost": 1.0
    													}
    												}
    											}],
    											"adjust_pure_negative": true,
    											"boost": 1.0
    										}
    									}, {
    										"bool": {
    											"should": [{
    												"bool": {
    													"filter": [{
    														"term": {
    															"nestedObject.params2": {
    																"value": "1",
    																"boost": 1.0
    															}
    														}
    													}, {
    														"range": {
    															"nestedObject.params2Start": {
    																"from": null,
    																"to": "07:02:26",
    																"include_lower": true,
    																"include_upper": true,
    																"boost": 1.0
    															}
    														}
    													}],
    													"adjust_pure_negative": true,
    													"boost": 1.0
    												}
    											}, {
    												"bool": {
    													"filter": [{
    														"term": {
    															"nestedObject.params2": {
    																"value": 1,
    																"boost": 1.0
    															}
    														}
    													}, {
    														"range": {
    															"nestedObject.params2End": {
    																"from": "07:02:26",
    																"to": null,
    																"include_lower": true,
    																"include_upper": true,
    																"boost": 1.0
    															}
    														}
    													}],
    													"adjust_pure_negative": true,
    													"boost": 1.0
    												}
    											}, {
    												"bool": {
    													"filter": [{
    														"term": {
    															"nestedObject.params2": {
    																"value": 1,
    																"boost": 1.0
    															}
    														}
    													}, {
    														"range": {
    															"nestedObject.params2Start": {
    																"from": null,
    																"to": "07:02:26",
    																"include_lower": true,
    																"include_upper": true,
    																"boost": 1.0
    															}
    														}
    													}, {
    														"range": {
    															"nestedObject.params2End": {
    																"from": "07:02:26",
    																"to": null,
    																"include_lower": true,
    																"include_upper": true,
    																"boost": 1.0
    															}
    														}
    													}],
    													"adjust_pure_negative": true,
    													"boost": 1.0
    												}
    											}],
    											"adjust_pure_negative": true,
    											"boost": 1.0
    										}
    									}],
    									"adjust_pure_negative": true,
    									"boost": 1.0
    								}
    							}, {
    								"bool": {
    									"should": [{
    										"bool": {
    											"filter": [{
    												"range": {
    													"nestedObject.params3": {
    														"from": "2020-05-07 07:02:26",
    														"to": null,
    														"include_lower": true,
    														"include_upper": true,
    														"boost": 1.0
    													}
    												}
    											}, {
    												"range": {
    													"nestedObject.params4": {
    														"from": null,
    														"to": "2020-05-07 07:02:26",
    														"include_lower": true,
    														"include_upper": true,
    														"boost": 1.0
    													}
    												}
    											}, {
    												"term": {
    													"nestedObject.params5": {
    														"value": 4,
    														"boost": 1.0
    													}
    												}
    											}],
    											"adjust_pure_negative": true,
    											"boost": 1.0
    										}
    									}, {
    										"bool": {
    											"should": [{
    												"term": {
    													"nestedObject.params5": {
    														"value": 1,
    														"boost": 1.0
    													}
    												}
    											}, {
    												"term": {
    													"nestedObject.params5": {
    														"value": 2,
    														"boost": 1.0
    													}
    												}
    											}],
    											"adjust_pure_negative": true,
    											"boost": 1.0
    										}
    									}],
    									"adjust_pure_negative": true,
    									"boost": 1.0
    								}
    							}],
    							"should": [{
    								"term": {
    									"nestedObject.params6": {
    										"value": 0,
    										"boost": 1.0
    									}
    								}
    							}, {
    								"term": {
    									"nestedObject.params6": {
    										"value": 1,
    										"boost": 1.0
    									}
    								}
    							}, {
    								"term": {
    									"nestedObject.params6": {
    										"value": 4,
    										"boost": 1.0
    									}
    								}
    							}],
    							"adjust_pure_negative": true,
    							"boost": 1.0
    						}
    					},
    					"path": "nestedObject",
    					"ignore_unmapped": false,
    					"score_mode": "none",
    					"boost": 1.0
    				}
    			}, {
    				"term": {
    					"params7": {
    						"value": "CN"
    					}
    				}
    			}],
    			"adjust_pure_negative": true,
    			"boost": 1.0
    		}
    	},
    	"_source": true,
    	"aggregations": {
    		"params7": {
    			"terms": {
    				"field": "params7",
    				"missing": "",
    				"size": 10000,
    				"min_doc_count": 1,
    				"shard_min_doc_count": 0,
    				"show_term_doc_count_error": false,
    				"order": [{
    					"_count": "desc"
    				}, {
    					"_key": "asc"
    				}],
    				"collect_mode": "breadth_first"
    			},
    			"aggregations": {
    				"params8": {
    					"nested": {
    						"path": "nestedObject"
    					},
    					"aggregations": {
    						"packageType": {
    							"terms": {
    								"field": "nestedObject.params8"
    							},
    							"aggregations": {
    								"params5": {
    									"filter": {
    										"term": {
    											"nestedObject.params5": {
    												"value": 1,
    												"boost": 1.0
    											}
    										}
    									},
    									"aggregations": {
    										"params5sum": {
    											"sum": {
    												"field": "nestedObject.params5"
    											}
    										}
    									}
    
    								},
    								"params9": {
    									"reverse_nested": {},
    									"aggregations": {
    										"params9-1": {
    											"filter": {
    												"term": {
    													"params1": {
    														"value": 0,
    														"boost": 1.0
    													}
    												}
    											}
    										}
    									}
    
    								},
    								"params2": {
    									"filter": {
    										"nested": {
    											"query": {
    												"term": {
    													"nestedObject.params2": {
    														"value": 1,
    														"boost": 1.0
    													}
    												}
    											},
    											"path": "nestedObject",
    											"ignore_unmapped": false,
    											"score_mode": "none",
    											"boost": 1.0
    										}
    									}
    								}
    							}
    						}
    					}
    				}
    			}
    		}
    	}
    }
    
    展开全文
  • nested exception is java.lang.StackOverflowError”的错误。总结一哈:StackOverflowError通常情况下是死循环或者是循环依赖了。Caused by: java.lang.StackOverflowError at com.hry.seckill.servi...

    欢迎大家关注我的公众号,添加我为好友!

    springBoot项目遇到了“Handler dispatch failed; nested exception is java.lang.StackOverflowError”的错误。

    总结一哈:

    StackOverflowError通常情况下是死循环或者是循环依赖了。

    Caused by: java.lang.StackOverflowError
    	at com.hry.seckill.service.impl.GoodsServiceImpl.getGoodsVoList(GoodsServiceImpl.java:17)
    	at com.hry.seckill.service.impl.GoodsServiceImpl.getGoodsVoList(GoodsServiceImpl.java:17)
    	at com.hry.seckill.service.impl.GoodsServiceImpl.getGoodsVoList(GoodsServiceImpl.java:17)
    	at com.hry.seckill.service.impl.GoodsServiceImpl.getGoodsVoList(GoodsServiceImpl.java:17)
    	at com.hry.seckill.service.impl.GoodsServiceImpl.getGoodsVoList(GoodsServiceImpl.java:17)
    	at com.hry.seckill.service.impl.GoodsServiceImpl.getGoodsVoList(GoodsServiceImpl.java:17)

     

    然后检查定位到的位置,发现错误:

     

     

    @Service
    public class GoodsServiceImpl implements GoodsService {
        @Autowired
        private GoodsService goodsService;

    我在Service中没有正确引用编写的Mapper而是引用了Service,所以报错,改正即可。

     

    @Service
    public class GoodsServiceImpl implements GoodsService {
        @Autowired
        private GoodsMapper goodsMapper;

    最后重启项目即可。

    欢迎大家关注我的公众号,添加我为好友!

    展开全文
  • Nested toggler" the entire dropdown collapses. <p><strong>To Reproduce Steps to reproduce the behavior: 1. Add the code from the example 2. Click on the nested menu item "Nested toggler" 3...
  • Nested Query support

    2020-11-30 20:29:33
    <div><p>DSL support for nested queries on the already supported nested type. <p>Nested objects/documents allow to map certain sections in the document indexed as nested allowing to query them as if ...
  • Nested Dolls

    万次阅读 2017-11-30 09:16:43
    Dilworth is the world’s most prominent collector of Russian nested dolls: he literally has thousands of them! You know, the wooden hollow dolls of different sizes of which the smallest doll is

    题目描述

    Dilworth is the world’s most prominent collector of Russian nested dolls: he literally has thousands of them! You know, the wooden hollow dolls of different sizes of which the smallest doll is contained in the second smallest, and this doll is in turn contained in the next one and so forth. One day he wonders if there is another way of nesting them so he will end up with fewer nested dolls? After all, that would make his collection even more magnificent! He unpacks each nested doll and measures the width and height of each contained doll. A doll with width w1 and height h1 will fit in another doll of width w2 and height h2 if and only if w1 < w2 and h1 < h2. Can you help him calculate the smallest number of nested dolls possible to assemble from his massive list of measurements? 

    输入描述:

    On the first line of input is a single positive integer 1 <= t <= 20 specifying the number of test cases to follow. Each test case begins with a positive integer 1 <= m <= 20000 on a line of itself telling the number of dolls in the test case. Next follow 2m positive integers w1, h1,w2, h2, . . . ,wm, hm, where wi is the width and hi is the height of doll number i. 1 <= wi, hi <= 10000 for all i.
           
    

    输出描述:

    For each test case there should be one line of output containing the minimum number of nested dolls possible.
           
    
    示例1

    输入

    4
    3
    20 30 40 50 30 40
    4
    20 30 10 10 30 20 40 50
    3
    10 30 20 20 30 10
    4
    10 10 20 30 40 50 39 51

    输出

    1
    2
    3
    2
    
    #include <iostream>
    #include <cstring>
    using namespace std;
     
    struct node
    {
        int x, y;
    };
    int cmp (const void *a, const void *b)
    {
        node *c = (node *)a;
        node *d = (node *)b;
        if (c -> x != d -> x)
            return c -> x - d -> x;
        else
            return d -> y - c -> y;
    }
     
    int main ()
    {
        node stu[21000];
        int t, n, i, j, k, a[21000];
     
        cin >> t;
     
        while (t--)
        {
            memset (a, 0, sizeof(a));
     
            cin >> n;
     
            for (i=0; i<n; i++)
                cin >> stu[i].x >> stu[i].y;
     
            qsort (stu, n, sizeof (stu[0]), cmp);
     
            a[0] = stu[0].y, k = 1;
            for (i=1; i<n; i++)
            {
                for (j=0; j<k; j++)
                {
                    if (a[j] < stu[i].y)
                    {
                        a[j] = stu[i].y;
                        break;
                    }
                }
                if (j == k)
                    a[k++] = stu[i].y;
            }
            cout << k << endl;
        }
        return 0;
    }


    展开全文
  • <div><p>I have has_one assiociation with nested_attributes enabled. Before including awesome_nested_set everything works just fine. After adding awesome_nested_set the nested attributes for the has_...
  • Nested KVM

    2017-12-24 13:13:55
    Nested KVM在Intel处理器上,KVM使用Intel的vmx(virtual machine eXtensions)来提高虚拟机性能,即硬件辅助虚拟化技术。如果一台虚拟机能够和物理机一样支持”vmx”,那么就可以在这台虚拟机上再次安装虚拟机。...
  • es nested

    2019-01-25 11:57:31
    要想能用父子级联查询 首先 index得设置成 nested 类型,如 PUT my_index { “mappings”: { “_doc”: { "properties": { "manager": { "properties": { "age": { ...
  • <div><p>This PR implements <a href="https://github.com/lotus/validations/issues/35">nested attributes</a> and validations by building an anonymous class with lotus validations included for the nested ...
  • C++ nested class

    2020-01-23 15:29:49
    C++ nested classnested class參考連結 nested class 在TensorRT/samples/common/logging.h中,TestAtom被定義在Logger中: class Logger : public nvinfer1::ILogger { public: //! //! \brief Opaque handle ...
  • <div><p>Currently pyrobuf fails when we reference one nested message definition from another. <p>Let's look at following proto definition: <pre><code> message M { optional string s = 1; ...
  • ElasticSearch关于对数组聚合([nested] nested path is not nested)的问题 记录一下使用ES时对数组类型数据进行聚合处理时的坑: 由于ES官方自己说的对于所有类型的数据都默认支持数组形式,所以我在创建索引时没有...
  • 干货 | Elasticsearch Nested类型深入详解

    万次阅读 多人点赞 2018-10-06 13:08:20
    0、概要 在Elasticsearch实战场景中,我们或多或少会遇到嵌套文档的组合形式,反映在ES中称为父子文档。 父子文档的实现,至少包含以下两种方式: ...2)Nested嵌套类型 本文通过一个例...
  • 通过EXPLAIN发现,extra中有数据是Using join buffer (Block Nested Loop),而其它关联的表都是Using index,最后使用排除法发现当extra为Using join buffer (Block Nested Loop)是最慢的,就算加了索...
  • { "error": { "root_cause": [ { "type": "illegal_argument_exception", "reason": "object mapping [ty_scenic_list] can't be changed from nested to non-nested" } ], "type": "il
  • <p>I would like to use the nested persistent menu, but is it possible in the current fbmq version? <p>Here is what I suggest: <h1>add ButtonPersistentNested(title, buttons) <p>nested = [ Template...
  • 1.什么是Nested-Loop Join? 2.Index Nested-Loop Join怎么优化连接? 3.Block Nested-Loop Join怎么优化连接? Nested-Loop Join 在Mysql中,使用Nested-Loop Join的算法思想去优化join,Nested-Loop Join翻译成...
  • 一.Nested-Loop Join 在Mysql中,使用Nested-Loop Join的算法思想去优化join,Nested-Loop Join翻译成中文则是“嵌套循环连接”。 举个例子: select * from t1 inner join t2 on t1.id=t2.tid (1)t1称为外层表...
  • <div><p>In JS, React renders <code>children</code> that consist of nested arrays by flattening them: <pre><code> js // JS, nested A({}, B({}), [ C({}), C({}), [ D({}), ] ], B({}) ) // ...
  • Nested Type

    2014-07-26 17:22:30
    /* Nested Type 类型定义后的适用范围可以被限定大括号内 尤其是枚举,常常被某个特定的类或结构体使用,则不需要暴露到外部 有些结构体和类也一样只用于特定的context中,这时可以用嵌套类型。 ...
  • <div><p>From Elastic v2.1, if sorting by nested field then the nested_path should always be specified (Elastic 2.1.0 Breaking changes - https://github.com/elastic/elasticsearch/pull/13429). ...
  • nested exception is org.apache.ibatis.exceptions.PersistenceExceptionCause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection;
  • nested classes

    2012-07-26 16:20:15
    Only nested classes can be static. By doing so you can use the nested class without having an instance of the outer class. class OuterClass{   public static class StaticNestedClass{   }
  • <div><p>A mixin definition is the only place that I want to allow nested syntax --- and that is because the limitations of at-rule mixin definitions mean I <em>need</em> to use nesting if I want to ...
  • nested class 例子

    2019-10-08 17:18:20
    #include<iostream> using namespace std; /* start of Enclosing class declaration */ class Enclosing { private: int x; /* start of Nested class decla...
  • <p>IMHO, and from what I have seen from users around me, it is more natural for a new user to write <code>List(Nested)</code> than <code>Nested(many)</code>. Besides, it is consistent with <code>Dict...

空空如也

空空如也

1 2 3 4 5 ... 20
收藏数 55,026
精华内容 22,010
关键字:

nested