null is returned.Examples Return all keys in a map based on the data in the t_table_map table that contains the c1(BIGINT)and t_map(MAP STRING,BIGINT)columns.Data in the table:+-+-+|c1|t_map|+-+-+|1000|{k11:86,k21:15}|1001...
Converts key-value pairs in Map a into a struct array.Syntax array struct K,V map_entries(map K,V a):Parameters a:required.This parameter specifies a map.K and V in map K,V specify the keys and values of a map.Return value...
Filters the elements in map input based on the predicate condition.Syntax map K,V map_filter(map K,V input,function K,V,boolean predicate)Parameters input:required.A value of the MAP type.K and V in map K,V specify the ...
对输入Map进行Union操作构造输出Map，如果某一个Key在多个输入Map中都存在，则会随机只保留其中的一个。注意事项 升级到MaxCompute 2.0后，产品扩展了部分函数。如果您用到的函数涉及新数据类型（TINYINT、SMALLINT、INT、FLOAT、VARCHAR、...
使用输入的两个字段分别作为Key和Value来构造Map，以第一个字段作为Map的Key，以第二个字段作为Map的Value。如果key为NULL，则被忽略。如果Key的取值有重复，则会随机只保留其中的一个。注意事项 升级到MaxCompute 2.0后，产品扩展了部分...
This topic uses a basic flat map as an example to describe how to use the Regional Thermal Layer widget to customize map boundaries.Procedure Go to the DataV console.On the My Visualizations page,click Edit above the ...
This topic describes the GCJ-02 coordinate system and the GeoJSON data format used by DataV map widgets.You can obtain the GCJ-02 coordinate of a location on the map.GCJ-02 coordinate system DataV map widgets use the GCJ-...
This topic describes the GCJ-02 coordinate system and the GeoJSON data format used by DataV map widgets.You can obtain the GCJ-02 coordinate of a location on the map.GCJ-02 coordinate system DataV map widgets use the GCJ-...
A fly line map uses a map as a background to show data relationships between regions with dynamic lines.This topic describes how to add data to a fly line map and configure its style.Prerequisites A data visualization ...
For map-only jobs,a mapper directly generates key-value pairs to MaxCompute tables.You need only to specify output tables instead of the key-value metadata for the output of a mapper.Prerequisites Complete the environment ...
可以使用工具（如 source-map-visualization）查看此映射。映射部分会显示代码的已解码映射。例如，条目 65-2:2 表示：生成的代码：const 一词位于压缩内容的65位。原始代码：const 一词位于原始内容的第2行和第2列。这样，开发者就可以...
map,shuffle,and reduce.In most cases,tables are joined in the reduce stage.MAPJOIN joins tables in the map stage instead of the reduce stage.This accelerates data transmission,reduces system resource consumption,and ...
map,shuffle,and reduce.In most cases,tables are joined in the reduce stage.MAPJOIN joins tables in the map stage instead of the reduce stage.This accelerates data transmission,reduces system resource consumption,and ...
√map(x,y)Returns a map that is created by using two arrays.√map_agg function map_agg(x,y)Returns a map that is created by using x and y.x is the key in the map.y is the value of the key in the map.If y has multiple ...
迭代（Map）状态允许用户对一个数组中的每个元素执行相同的操作，从而简化大规模数据的处理和工作流的管理。迭代状态的处理模式 为了提高数据处理的效率，适应不同的应用场景，迭代状态提供了以下两种处理模式：内联模式 迭代（Map）状态的...
Simple Log Service allows you to display region information collected by the ip_to_country function in a world map.This topic describes how to configure a world map.Prerequisites Data is collected.For more information,see ...
A custom image base map is the basis for constructing a building heatmap.This topic describes how to configure a custom image base map and perform dataset matching.Create and configure a custom image base map The ...
A multi-layer map combines multiple map layers to show the distribution of complex geographic data.This topic describes how to add data and configure styles for a multi-layer map.Prerequisites You have created a data ...
line density map layer is a sub-component of a basic flat map.It supports independent styles,data,and interactive configurations.It can represent route information on geographic locations in the form of thermal lines.It is...
当您需要将字符串转换为Map类型以便查询和报表生成时，MaxCompute提供 STR_TO_MAP 函数，可以帮助您将数据转换为MAP格式，使用分隔符1（delimiter1）将目标字符串分割成Key-Value对，然后使用分隔符2（delimiter2）分割每个Key-Value对的...
问题描述 Dataphin的pyodps脚本配置了“set odps.sql.mapjoin.memory.max=1024”语句没有起作用。解决方案 Dataphin的pyodps脚本任务不支持set参数；可以在计算源项目中配置。适用于 Dataphin
对输入的两个MAP对象 input1 和 input2 进行合并得到一个新MAP对象。新MAP的Key是两个MAP的Key的并集。针对新MAP的每一个Key，通过 func 来计算它的Value。命令格式 K,V1,V2,V3 map K,V3 map_zip_with(map K,V1 input1,map K,V2 input2,...
使用示例-返回{1:a,2:b}。select map_from_entries(array(struct(1,'a'),struct(2,'b')));返回{1:a,2:c}。select map_from_entries(array(struct(1,'a'),struct(2,'b'),struct(2,'c')));相关函数 MAP_FROM_ENTRIES函数属于复杂类型函数，更...
MAP_FROM_ARRAYS函数用于将ARRAY数组 a 和 b 组合成一个MAP对象。命令格式 MAP K,V MAP_FROM_ARRAYS([STRING mapDupKeyPolicy,]ARRAY K a,ARRAY V b)参数说明 mapDupKeyPolicy：可选。STRING类型。指定出现重复Key时的处理方式。取值范围...
对输入Map进行Union并对同一个Key的Value进行求和操作构造输出Map，如果某一个Key对应的Value为NULL，则将其转换为0。注意事项 升级到MaxCompute 2.0后，产品扩展了部分函数。如果您用到的函数涉及新数据类型（TINYINT、SMALLINT、INT、...
Simple Log Service enables the use of the ip_to_province function to represent regional data on the map of China.This topic outlines the steps to configure the map of China.Prerequisites Data is collected.For more ...
The online basemap is a subcomponent of the basic flat map.It supports independent styles and interactive configurations,including the template,display content,and filter of the basemap.It supports the access of the latest...
security groups and key pairs.Specialized capabilities are supported by specific edge nodes.You can use the capability map to query specialized capabilities.Note By default,all edge nodes support the following capabilities...
Data Map is a DataWorks module that you can use to manage the metadata and data assets of your business.You can use Data Map to view the details of metadata,view data lineage,and manage data categories.Data Map can help ...
mPaaS is built with the AMAP Map SDK.There would be a conflict with AMAP Map,if your app needs to be launched on Google Play Store,but it also integrates with an official AMAP SDK that can be approved by Google.Solution ...
Introduce Baidu Map SDK Refer to Baidu Map official documentation to integrate the Map LBS SDK.Ensure the SDK version is 7.5.9 or higher.After adding the SDK,you must delete the libc+_shared.so file to prevent conflicts ...
If you want to accelerate queries on MaxCompute data in Hologres,you can use the MaxCompute metadata mapping feature provided by data catalogs to map the metadata of MaxCompute tables to Hologres.This allows you to ...