union_all-union_all文档介绍内容-阿里云

三元组转kv

create table triple2kv_test_input as select*from(select '01' as id,'a' as word,10 as count union all select '01' as id,'b' as word,20 as count union all select '01' as id,'c' as word,30 as count union all select '02' as id...

与标准SQL的主要区别及解决方法

本文为您列举MaxCompute SQL与标准SQL的区别及常见问题解决方法。...UNION ALL 参与UNION ALL运算的所有表必须列数一致，否则会报错。参与UNION ALL运算的所有列的数据类型、列个数和列名称必须完全一致。UNION ALL需要再嵌套一层子查询。无。

PageRank

create table PageRankWithWeight_func_test_edge as select*from(select 'a' as flow_out_id,'b' as flow_in_id,1.0 as weight union all select 'a' as flow_out_id,'c' as flow_in_id,1.0 as weight union all select 'b' as flow_out_...

解决SQL Server表中的中文乱码问题

INSERT INTO temp SELECT '䅇' UNION ALL SELECT '库';SELECT*FROM temp;显示结果如下，“䅇”（su）字并未正确显示，而是出现了问号?分析原因 SQL Server采用Unicode编码格式的数据类型（例如NCHAR、NVARCHAR）来支持包含亚洲语言（包括...

COMMON TABLE EXPRESSION（CTE）

使用示例假设现有如下代码：insert overwrite table srcp partition(p='abc')select*from(select a.key,b.value from(select*from src where key is not null)a join(select*from src2 where value>0)b on a.key=b.key)c union all select...

双样本T检验

memSizePerCore=max(1024,int(kOneCoreDataSize*2))return coreNum,memSizePerCore 使用示例测试数据 create table pai_test_input as select*from(select 1 as f0,2 as f1 union all select 1 as f0,3 as f1 union all select 1 as f0,4 ...

COMMON TABLE EXPRESSION（CTE）

使用示例假设现有如下代码：insert overwrite table srcp partition(p='abc')select*from(select a.key,b.value from(select*from src where key is not null)a join(select*from src2 where value>0)b on a.key=b.key)c union all select...

PMI

命令如下：create table maple_test_pmi_basic_input as select*from(select"w1 w2 w3 w4 w5 w6 w7 w8 w8 w9"as doc union all select"w1 w3 w5 w6 w9"as doc union all select"w0"as doc union all select"w0 w0"as doc union all select...

DQL操作

IN SUBQUERY 是 NOT EXISTS SUBQUERY 是 SCALAR SUBQUERY 是交集、并集和补集支持 intersect 不支持 intersect all 不支持 intersect distinct 并集支持 union all 支持 union[distinct]补集支持 except 支持 except all 支持 minus 不...

逻辑回归二分类

cast(0 as double)as f2,cast(0 as double)as f3,cast(0 as bigint)as label union all select cast(0 as double)as f0,cast(0 as double)as f1,cast(1 as double)as f2,cast(0 as double)as f3,cast(1 as bigint)as label union all ...

DQL操作

IN SUBQUERY 是 NOT EXISTS SUBQUERY 是 SCALAR SUBQUERY 是交集、并集和补集支持 intersect 不支持 intersect all 不支持 intersect distinct 并集支持 union all 支持 union[distinct]补集支持 except 支持 except all 支持 minus 不...

标签传播分类

create table LabelPropagationClassification_func_test_edge as select*from(select 'a' as flow_out_id,'b' as flow_in_id,0.2 as edge_weight union all select 'a' as flow_out_id,'c' as flow_in_id,0.8 as edge_weight union all ...

协同过滤etrec

create table etrec_test_input as select*from(select cast(0 as string)as user,cast(0 as string)as item union all select cast(0 as string)as user,cast(1 as string)as item union all select cast(1 as string)as user,cast(0 as ...

SQL使用限制

UNION ALL 256个数量限制 UNION ALL 场景，最多允许合并256个表。MAPJOIN 128个数量限制 MAPJOIN 场景，最多允许连接128个小表。MAPJOIN 内存限制 512 MB 数量限制 MAPJOIN 场景，所有小表的内存不能超过512 MB。窗口函数 5个数量限制 ...

Table2KV

create table test as select*from(select 0 as rowid,1 as col0,1.1 as col1,2 as col2 union all select 1 as rowid,0 as col0,1.2 as col1,3 as col2 union all select 2 as rowid,1 as col0,2.3 as col1,4 as col2 union all select 3 ...

归一化

cast('2016-07-03 10:00:00' as datetime)as col_datetime union all select '03' as col_string,12 as col_bigint,cast(null as double)as col_double,False as col_boolean,cast('2016-07-04 10:00:00' as datetime)as col_datetime ...

PS-SMART多分类

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

PS-SMART二分类训练

1 as label union all select-0.2 as f0,-0.55 as f1,-1.28 as f2,0.48 as f3,-1.7 as f4,1.13 as f5,1 as label union all select 1.24 as f0,-0.68 as f1,1.82 as f2,1.57 as f3,1.18 as f4,0.2 as f5,0 as label union all select-0.85 ...

SQL使用限制

UNION ALL 256个数量限制 UNION ALL 场景，最多允许合并256个表。MAPJOIN 128个数量限制 MAPJOIN 场景，最多允许连接128个小表。MAPJOIN 内存限制 512 MB 数量限制 MAPJOIN 场景，所有小表的内存不能超过512 MB。ptinsubq 1000行数量...

1.0数据类型版本

1.0数据类型版本：SELECT*FROM t1 UNION ALL SELECT*FROM(SELECT*FROM t2 LIMIT 10)t2;2.0数据类型版本：SELECT*FROM(SELECT*FROM t1 UNION ALL SELECT*FROM t2)t LIMIT 10;1.0数据类型版本的IN表达式与2.0数据类型版本不同。例如 a IN(1,2...

GBDT回归

cast(0 as double)as f2,cast(0 as double)as f3,cast(0 as bigint)as label union all select cast(0 as double)as f0,cast(0 as double)as f1,cast(1 as double)as f2,cast(0 as double)as f3,cast(1 as bigint)as label union all ...

标准化

cast('2016-07-03 10:00:00' as datetime)as col_datetime union all select '03' as col_string,12 as col_bigint,cast(null as double)as col_double,False as col_boolean,cast('2016-07-04 10:00:00' as datetime)as col_datetime ...

PS-SMART回归

'1:0.77 2:0.91 3:0.23 4:4.46 5:0.91' as features union all select 2.0 as label,'1:0.86 2:0.22 3:0.46 4:0.08 5:0.60' as features union all select 1.0 as label,'1:0.76 2:0.89 3:1.02 4:0.78 5:0.86' as features union all ...

SQL使用限制项

UNION ALL 256个数量限制 UNION ALL 场景，最多允许合并256个表。MAPJOIN 128个数量限制 MAPJOIN 场景，最多允许连接128个小表。MAPJOIN 内存限制 512 MB 数量限制 MAPJOIN 场景，所有小表的内存不能超过512 MB。ptinsubq 1000行数量...

GBDT二分类

cast(0 as double)as f2,cast(0 as double)as f3,cast(0 as bigint)as label union all select cast(0 as double)as f0,cast(0 as double)as f1,cast(1 as double)as f2,cast(0 as double)as f3,cast(1 as bigint)as label union all ...

K均值聚类

使用其他初始质心的方式 create table pai_kmeans_test_input as select*from(select 'id1' as id,1 as f0,2 as f1 union all select 'id2' as id,1 as f0,3 as f1 union all select 'id3' as id,1 as f0,4 as f1 union all select 'id4' ...

开发ODPS MR任务

insert overwrite table wc_in select*from(select 'project','val_pro' from dual union all select 'problem','val_pro' from dual union all select 'package','val_a' from dual union all select 'pad','val_a' from dual)b;...

开发ODPS MR任务

insert overwrite table wc_in select*from(select 'project','val_pro' from dual union all select 'problem','val_pro' from dual union all select 'package','val_a' from dual union all select 'pad','val_a' from dual)b;...

离散值特征分析

string,0 as col_bigint,1.0 as col_double union all select '01' as col_string,1 as col_bigint,cast(null as double)as col_double union all select '01' as col_string,1 as col_bigint,1.0 as col_double union all select '00' as ...

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...

Quick BI如何根据排名大小给数据分组

(select city,count(distinct order_id)order_num,'top1-10' as rank_num from company_sales_record group by city order by count(distinct order_id)desc limit 10)union all(select b1.city,b1.order_num,'top11-20' as rank_num from...

计算成本控制

SELECT t.id,SUM(t.val)AS val FROM(SELECT id,SUM(col3)AS val FROM table3 GROUP BY id UNION ALL SELECT id,SUM(col4)AS val FROM table4 GROUP BY id)t GROUP BY t.id;可以优化为-SELECT t.id,SUM(t.val)AS val FROM(SELECT id,col3 AS...

Quick BI如何通过筛选条件控制展示不同的度量值趋势

您可参考如下操作通过SQL创建数据集，参考语句如下 select report_date,'金额'as flag,sum(order_amt)as show_index from company_sales_record_copy group by report_date union all select report_date,'数量'as flag,sum(order_number)...

逻辑回归多分类

cast(0 as double)as f2,cast(0 as double)as f3,cast(0 as bigint)as label union all select cast(0 as double)as f0,cast(0 as double)as f1,cast(1 as double)as f2,cast(0 as double)as f3,cast(2 as bigint)as label union all ...

查询优化建议

如果Join的where条件中的第一级谓词是OR，并且cond1 OR cond2的条件有左表也有右表，业务上应该考虑rewrite成join where cond1 union all join where cond2的形式，这样性能会更好。outer join的on和where作用域不同。on是作用于join的过程...

使用 MULTISET UNION 运算符

特征为：coll_1 MULTISET UNION[ALL|DISTINCT]coll_2 coll_1和coll_2指定要合并的集合的名称。包含ALL关键字将指定重复元素（coll_1和coll_2中都存在的元素）应包含在结果中，它们每次存在于原始集合中时都应包含一次。这是 MULTISET UNION...

MSSQL中如何查看行锁等待

go WITH CTE_SID(BSID,SID,sql_handle)AS(SELECT[Blocking_Session_ID],[Session_ID],sql_handle FROM sys.dm_exec_requests WHERE[Blocking_Session_ID]<>0 UNION ALL SELECT A.[Blocking_Session_ID],A.[Session_ID],A.sql_handle FROM ...

VALUES

它实际等效于：SELECT 1 AS column1,'one' AS column2 UNION ALL SELECT 2,'two' UNION ALL SELECT 3,'three';更常用的，VALUES 可以被用在一个大型 SQL 命令中。在 INSERT 中最常用：INSERT INTO films(code,title,did,date_prod,kind)...

多分类评估

'A' as label,'A' as prediction,'{"A":0.7,"B":0.3}' as detail union all select '3' as id,'A' as label,'A' as prediction,'{"A":0.9,"B":0.1}' as detail union all select '4' as id,'B' as label,'B' as prediction,'{"A":0.2,"B":0...

SQL 修饰

name LIMIT 5 是是 JOIN INNER JOIN LEFT JOIN RIGHT JOIN FULL JOIN SELECT col_name1,col_name2 FROM tb1_name JOIN tb2_name ON tb1_name.col_name1=tb2_name.col_name1 是否 UNION UNION ALL SELECT INTO SELECT col_name1,col_name2...

union_all

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