union-union文档介绍内容-阿里云

点聚类系数

out_id,'5' as flow_in_id union all select '1' as flow_out_id,'6' as flow_in_id union all select '2' as flow_out_id,'3' as flow_in_id union all select '3' as flow_out_id,'4' as flow_in_id union all select '4' as flow_out_id...

k-Core

out_id,'3' as flow_in_id union all select '2' as flow_out_id,'4' as flow_in_id union all select '3' as flow_out_id,'4' as flow_in_id union all select '3' as flow_out_id,'5' as flow_in_id union all select '3' as flow_out_id...

ST_UnaryUnion

gridsize 指定网格大小，使得union时在相同网格内的顶点会直接合并，默认值为-1.0。表示不启用。options 如果要开启并行执行，可通过options指定并行度。并行度范围为 1~64，格式为JSON字符串，例如 '{"parallel":4}' 代表开启并行计算同时...

SELECT

UNION UNION把所有结果集两个结果集合并起来。下面是一个最简单的可能使用UNION分句的例子。它选择了值13并且合并了第二个选择的值42，把他们结合起来。SELECT 13 UNION SELECT 42;col0-13 42(2 rows)INTERSECT INTERSECT只返回那些同时在...

正态检验

create table normality_test_input as select*from(select 1 as x from dual union all select 2 as x from dual union all select 3 as x from dual union all select 4 as x from dual union all select 5 as x from dual union all ...

CTE

Recursive CTE包含两部分查询子句，通过UNION ALL或UNION连接：SELECT.-non recursive part,return initial row set UNION[ALL]SELECT.-recursive part,return additional row sets 其中第一个查询子句 non recursive part 负责生成初始...

数据类型

BITMAP列只能通过配套的bitmap_union_count、bitmap_union、bitmap_hash、bitmap_hash64等函数进行查询或使用。QUANTILE_STATE/QUANTILE_STATE是一种计算分位数近似值的类型，在导入时会对相同的Key，不同Value进行预聚合，当Value数量不...

如何快速搭建U2I2I召回服务

id,1672502402 AS logtime UNION SELECT 'B' AS user_id,'10001' AS item_id,1672502403 AS logtime UNION SELECT 'C' AS user_id,'10003' AS item_id,1672502404 AS logtime;写入标识分区 INSERT OVERWRITE TABLE aime_example_u2i ...

单源最短路径

out_id,"d"as flow_in_id,1.0 as edge_weight union all select"b"as flow_out_id,"e"as flow_in_id,2.0 as edge_weight union all select"e"as flow_out_id,"d"as flow_in_id,1.0 as edge_weight union all select"c"as flow_out_id,"e"as...

WITH查询（公共表表达式）

一个递归 WITH 查询的通常形式总是一个非递归项，然后是 UNION（或者 UNION ALL），再然后是一个递归项，其中只有递归项能够包含对于查询自身输出的引用。这样一个查询可以被这样执行：递归查询求值计算非递归项。对 UNION（但不对 UNION ...

INTERSECT 子句

本文介绍INTERSECT子句。语法 INTERSECT 子句具有以下形式：select_statement INTERSECT select_statement 说明 select_statement 是不带 ORDER BY 或 FORUPDATE 子句的...也就是说，A UNION B INTERSECT C 将被读作 A UNION(B INTERSECT C)。

SELECT

DESC][,.]]][GROUP BY { expression|ROLLUP(expr_list)|CUBE(expr_list)|GROUPING SETS(expr_list)}[,.][LEVEL]][HAVING condition[,.]][{ UNION[ALL]|INTERSECT|MINUS } select][ORDER BY expression[ASC|DESC][,.]][FOR UPDATE[WAIT n|...

PS线性回归

'1:0.77 2:0.91 3:0.23 4:4.46 5:0.91' as features union all select cast(2 as BIGINT)as label,'1:0.86 2:0.22 3:0.46 4:0.08 5:0.60' as features union all select cast(1 as BIGINT)as label,'1:0.76 2:0.89 3:1.02 4:0.78 5:0.86' ...

获取Doc

默认值说明 ids Union[Union[str,int],List[Union[str,int]]]-主键或主键list partition（可选）Optional[str]None Partition名称 async_req（可选）bool False 是否异步出参描述说明返回结果为DashVectorResponse对象，...

SELECT

UNION PolarDB-X 支持如下UNION语法：SELECT.UNION[ALL|DISTINCT]SELECT.[UNION[ALL|DISTINCT]SELECT.]说明对于UNION中的每个SELECT，PolarDB-X 暂不支持使用多个同名的列。例如以下SQL的SELECT中存在重复的列名，暂不支持。SELECT id,id,...

SELECT

UNION PolarDB-X 1.0 支持如下UNION语法：SELECT.UNION[ALL|DISTINCT]SELECT.[UNION[ALL|DISTINCT]SELECT.]说明对于UNION中的每个SELECT，PolarDB-X 1.0 暂不支持使用多个同名的列。例如以下SQL的SELECT中存在重复的列名，暂不支持。...

VALUES列表

它实际上等效于：SELECT 1 AS column1,'one' AS column2 UNION ALL SELECT 2,'two' UNION ALL SELECT 3,'three';在默认情况下，本数据库中将 column1、column2 等名字分配给一个 VALUES 表的列。这些列名不是由 SQL 标准指定的，并且不同的...

SELECT

UNION UNION操作符计算所涉及的SELECT语句所返回的行的并集。如果一至少出现在两个结果集中的一个内，它就会在并集中。作为UNION两个操作数的SELECT语句必须产生相同数量的列并且对应位置上的列必须具有兼容的数据类型。UNION的结果不会...

特征编码

5228.2 as nr_employed,0 as y union all select 37 as age,1 as campaign,999 as pdays,0 as previous,-1.8 as emp_var_rate,92.893 as cons_price_idx,-46.2 as cons_conf_idx,1.327 as euribor3m,5099.1 as nr_employed,0 as y union ...

DQL操作

目录 Select Join Join-Cross Join Join-内连接 Inner Join Join-外连接 Outer Join Join-自连接 Join-左半连接 Join-不等值连接 Map Join 去重Union 不去重Uion ALL 去重 INTERSECT 不去重 INTERSECT ALL 去重 EXCEPT 不去重 EXCEPT 说明 ...

最大连通子图

create table MaximalConnectedComponent_func_test_edge as select*from(select '1' as flow_out_id,'2' as flow_in_id union all select '2' as flow_out_id,'3' as flow_in_id union all select '3' as flow_out_id,'4' as flow_in_id ...

用户喜好推荐系统（PostgreSQL近似计算应用）

mod_time=excluded.w5_mod_time,whole=hll_union(coalesce(t_like.whole,hll_empty()),excluded.whole)where hll_union(coalesce(t_like.w5,hll_empty()),excluded.w5)<>coalesce(t_like.w5,hll_empty())or hll_union(coalesce(t_like....

奇异值分解

create table svd_test_input as select*from(select '0:3.9079 2:0.0009 3:0.0416 4:0.17664 6:0.36460 8:0.091330' as col0 from dual union all select '0:0.09229 2:0.4872172 5:0.5267 8:0.4544 9:0.23317' as col0 from dual union ...

物化视图

BITMAP_UNION，BITMAP_UNION的形式必须为：BITMAP_UNION(TO_BITMAP(COLUMN))，且列（COLUMN）的类型只能是整数（largeint 也不支持）。或者为 BITMAP_UNION(COLUMN)且目标表为Aggregate模型。HLL_UNION，HLL_UNION的形式必须为：HLL_UNION...

线性回归

0 as x2,'0:3.89' as sparsecol1 from dual union all select 40 as y,4.19 as x1,0 as x2,'0:4.19' as sparsecol1 from dual union all select 50 as y,5.76 as x1,0 as x2,'0:5.76' as sparsecol1 from dual union all select 60 as y,6....

卡方拟合性检验

默认所有概率值相等示例测试数据 create table pai_chisq_test_input as select*from(select '1' as f0,'2' as f1 from dual union all select '1' as f0,'3' as f1 from dual union all select '1' as f0,'4' as f1 from dual union all...

GROUPING SETS扩展

换句话说，就是执行一项 UNION ALL 运算，将多个分组的结果集合并到一个结果集中。您会看到，UNION ALL 运算以及 GROUPINGSETS 扩展不会从合并在一起的结果集中消除重复行。单个 GROUPINGSETS 扩展的语法如下：GROUPING SETS({ expr_1|...

ST_Collect

函数ST_Collect 和函数ST_Union 经常可以互换使用，除了ST_Collect将始终返回GeometryCollection或Multi类型，而ST_Union溶解边界时可能返回单个Geometry对象。ST_Union还将在节点相交处分割LineString，而ST_Collect则仅仅返回为...

ST_Collect

函数ST_Collect 和函数ST_Union 经常可以互换使用，除了ST_Collect将始终返回GeometryCollection或Multi类型，而ST_Union溶解边界时可能返回单个Geometry对象。ST_Union还将在节点相交处分割LineString，而ST_Collect则仅仅返回为...

ST_Collect

函数ST_Collect 和函数ST_Union 经常可以互换使用，除了ST_Collect将始终返回GeometryCollection或Multi类型，而ST_Union溶解边界时可能返回单个Geometry对象。ST_Union还将在节点相交处分割LineString，而ST_Collect则仅仅返回为...

K近邻

create table pai_knn_test_input as select*from(select 1 as f0,2 as f1,'good' as class from dual union all select 1 as f0,3 as f1,'good' as class from dual union all select 1 as f0,4 as f1,'bad' as class from dual union all...

行列转换

结果：列转行方法一：通过UNION语句 SELECT username,subject,score FROM(SELECT username,'语文' AS subject,yuwen AS score FROM unpivot WHERE yuwen is not null UNION SELECT username,'数学' AS subject,shuxue AS score FROM ...

新建Collection

接口定义 Python Client.create(name:str,dimension:int,dtype:Union[Type[int],Type[float]]=float,fields_schema:Optional[Dict[str,Union[Type[str],Type[int],Type[float],Type[bool]]]]=None,metric:str='cosine',extra_params:Dict...

HLL近似去重

使用示例创建一张含有HLL列的表 CREATE TABLE test_hll(dt date,id int,name char(10),province char(10),os char(10),pv hll hll_union)Aggregate KEY(dt,id,name,province,os)distributed by hash(id)buckets 10 PROPERTIES(...

BITMAP精准去重

orthogonal_Bitmap_union_count 求Bitmap并集count函数，语法同原版Bitmap_union_count，但实现不同。语法 orthogonal_Bitmap_union_count(Bitmap_column)参数说明参数名称参数说明 Bitmap_column 待求并集count的Bitmap列名称。示例 ...

GROUP BY

上述示例等同于：SELECT origin_state,NULL,NULL,sum(package_weight)FROM shipping GROUP BY origin_state UNION ALL SELECT origin_state,origin_zip,NULL,sum(package_weight)FROM shipping GROUP BY origin_state,origin_zip UNION ALL...

皮尔森系数

否示例输入表 create table pai_pearson_test_input as select*from(select 1.0 as f0,0.11 as f1 union all select 2.0 as f0,0.12 as f1 union all select 3.0 as f0,0.13 as f1 union all select 5.0 as f0,0.15 as f1 union all ...

预测

create table pai_rf_test_input as select*from(select 1 as f0,2 as f1,"good"as class from dual union all select 1 as f0,3 as f1,"good"as class from dual union all select 1 as f0,4 as f1,"bad"as class from dual union all ...

三元组转kv

create table triple2kv_test_input as select*from(select '01' as id,'a' as word,10 as count from dual union all select '01' as id,'b' as word,20 as count from dual union all select '01' as id,'c' as word,30 as count from ...

聚类模型评估

create table if not exists pai_cluster_evaluation_test_input as select*from(select 1 as id,1 as f0,2 as f3 from dual union all select 2 as id,1 as f0,3 as f3 from dual union all select 3 as id,1 as f0,4 as f3 from dual ...

union

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