LeftSemi LeftSemi流程类似LeftOuter，但其并不真正输出左表和右表元组，而根据下面真值表输出左表元组和NULL/TRUE/FALSE值，或仅输出左表元组，或不输出等。对于存在PostFilter的LeftSemi，若匹配左表HashMap后还需要经过PostFilter来判断...
null"},"Reason":"null","ReasonMcmsKey":"null","ReasonMcmsContext":{"key":"null"},"Proposal":"null","ProposalMcmsKey":"null","ProposalMcmsContext":{"key":"null"},"UpstreamErrorDetail":"null"},"Code":"INNER_ERROR","Message...
e_edz*示例 正常返回示例 JSON 格式 {"Success":true,"ErrorDetail":{"Code":"CM-RESOAT1111","Level":"ERROR","Message":"null","ExtraContext":{"key":"null"},"MessageMcmsKey":"null","MessageMcmsContext":{"key":"null"},"Reason":...
您可以在SQL中使用字符串函数对指定字符串进行灵活处理。本文为您提供SQL支持的字符串函数的命令格式、参数说明及示例，指导您使用字符串函数完成开发。SQL支持的字符串函数如下。函数 功能 ASCII 返回字符串的第一个字符的ASCII码。CHAR_...
您可以在ADB_PG_SQL 任务中使用聚合函数对指定字符串进行灵活处理。本文为您提供ADB_PG_SQL任务支持的聚合函数的命令格式、参数说明及示例，指导您使用字符串函数完成开发。AnalyticDB for PostgreSQL支持的字符串函数如下。函数 功能 ...
Node.js 性能平台运行时与社区 Node.js 运行时是什么关系 Node.js 性能平台运行时完全兼容社区对应版本 Node.js 运行时，对应关系 请查看。Node.js 性能平台运行时是否会影响性能 Node.js 性能平台运行时每分钟在主线程将监控数据写到内存...
当您需要对存储在表中的字符串数据进行截取、拼接、转化、比较、搜索等操作，您可以使用MaxCompute支持的字符串函数对指定字符串进行灵活处理。本文为您介绍MaxCompute支持的字符串函数的命令格式、参数说明及示例。MaxCompute SQL支持的...
例如GROUP BY ROLLUP(a,b)，结果集为(a,b)、(a,null)和(null,null)。SELECT key,.aggregate function GROUP BY ROLLUP(key,.)GROUP BY CUBE GROUP BY CUBE子句按照所有可能的列组合进行分组。例如GROUP BY CUBE(a,b)，结果集为(a,b)、(null...
之内 nul is null 为空 nnul is not null 不为空 数据包括系统属性，API中不允许赋值和更新系统属性，系统属性如下：属性 描述 id 数据主键 creator 数据创建者 modifier 数据修改者 gmt_create 数据创建时间 gmt_modified 数据修改时间 1....
mgr对象在声明中进行初始化，而emp对象在声明中初始化为NULL并且在主体中分配有一个值。DECLARE mgr EMP_OBJ_TYPE:=(9002,'SMITH',NULL);emp EMP_OBJ_TYPE;BEGIN emp:=NEW EMP_OBJ_TYPE(9003,'RAY',NULL);END;在 PolarDB PostgreSQL版...
1 IS DISTINCT FROM NULL→t（而不是 NULL）NULL IS DISTINCT FROM NULL→f（而不是 NULL）datatype IS NOT DISTINCT FROM datatype→boolean 相等,将空（null）视为可比值。1 IS NOT DISTINCT FROM NULL→f（而不是 NULL）NULL IS NOT ...
查询和分析语句*|SELECT sum(IF(status=200,1,0))*1.0/count(*)AS status_200_percentag 查询和分析结果 COALESCE表达式 COALESCE表达式用于返回多个表达式中第一个非null的值。语法 COALESCE(expression1,expression2,expression3.)参数...
示例2：计算ARRAY数组 array(10,20,20,30,30,null,null)和 array(30,30,20,20,40,null,null)的交集，并去掉重复元素。命令示例如下。返回[20,30,null]。select array_intersect(array(10,20,20,30,30,null,null),array(30,30,20,20,40,null...
NULL|1|linux|PC|NULL|1|linux|Phone|NULL|1|windows|Phone|NULL|1|windows|NULL|NULL|4|ios|NULL|NULL|1|linux|NULL|NULL|2|NULL|NULL|NULL|7|+-+-+-+-+通过ROLLUP对 os,(os,device),city 按层级聚合的方式产生GROUPING SETS，语法如下：...
NULL|1|linux|PC|NULL|1|linux|Phone|NULL|1|windows|Phone|NULL|1|windows|NULL|NULL|4|ios|NULL|NULL|1|linux|NULL|NULL|2|NULL|NULL|NULL|7|+-+-+-+-+通过ROLLUP对 os,(os,device),city 按层级聚合的方式产生GROUPING SETS，语法如下：...
当您编写MaxCompute的SQL语句，需要同时执行关联（JOIN）操作和对数据过滤时，您需要特别关注对于不同的JOIN类型，过滤条件所在位置不同，因为计算顺序的差异可能会导致查询结果不同。本文以一个具体示例介绍不同JOIN操作的过滤条件在不同...
SQL 标准中并不存在 NULL 约束，因此它不能被用于可移植的应用中（本数据库中加入它是为了和某些其他数据库系统兼容）。但是某些用户喜欢它，因为它使得在一个脚本文件中可以很容易的进行约束切换。例如，初始时我们可以：CREATE TABLE ...
COALESCE 获取参数中第一个非NULL的值。GREATEST 返回参数中最大的值。IF 判断指定的条件是否为真。IS_CELLPHONE_NUMBER 判断指定的文本是否为手机号。LEAST 返回参数中最小的值。MAX_PT 返回分区表的一级分区的最大值。CAST 函数说明 将...
finish_reason":"null","choices":null} {"input_tokens":21,"output_tokens":8,"total_tokens":29} {"text":"当然可以，这里有一个简单的三菜合一的菜品建议——“蔬菜炖","finish_reason":"null","choices":null} {"input_tokens":21,...
c1|c2|c3|+-+-+-+|NULL|20|2017-11-13 05:00:00|ddd|25|NULL|bbb|NULL|2017-11-12 08:00:00|aaa|23|2017-11-11 00:00:00|+-+-+-+通过 nvl 函数将 c1 中为NULL的值输出为00000，c2 中为NULL的值输出为0，c3 中为NULL的值输出为-，命令示例...
通常，MaxCompute SQL在计算 NULL=NULL 时返回NULL，但在该函数中，NULL与NULL的值是相等的。使用示例 例如表 sale_detail 的字段为 shop_name string,customer_id string,total_price double,包含数据如下。shop_name|customer_id|total_...
null MessageMcmsContext object 用于填充 MessageMcmsKey 中的占位符。string 用于填充 MessageMcmsKey 中的占位符。null Reason string 错误原因。null ReasonMcmsKey string 错误原因的 Key。null ReasonMcmsContext object 错误原因的...
array及 array中的 T 和 U 指代ARRAY数组元素的数据类型，数组中的元素可以为任意类型。数组中的元素可以为如下类型：TINYINT、SMALLINT、INT、BIGINT FLOAT、DOUBLE BOOLEAN DECIMAL、DECIMALVAL DATE、DATETIME、TIMESTAMP、...
PolarDB PostgreSQL版（兼容Oracle）支持用户定义的PL/SQL子类型和（子类型）别名。子类型是具有一组可选约束的数据类型，这些约束限制可以存储在该类型的列中的值。适用于该子类型所基于的类型的规则仍然适用，但您可以使用其他约束限制该...
Reason":"null","ReasonMcmsKey":"null","ReasonMcmsContext":{"key":"null"},"Proposal":"Contact the administrator.","ProposalMcmsKey":"null","ProposalMcmsContext":{"key":"null"},"UpstreamErrorDetail":"null"},"Code":"INNER_...
下面是一个在parent和child表中通过单列建立的外键：CREATE TABLE parent(id INT NOT NULL,PRIMARY KEY(id));CREATE TABLE child(id INT,parent_id INT,INDEX par_ind(parent_id),FOREIGN KEY(parent_id)REFERENCES parent(id)ON DELETE ...
当数组
中元素为
NULL时，用 nullreplacement 替代，没有设置 nullreplacement 时，会忽略
NULL元素。命令格式 array_join(array<T><a>,[,])参数说明 a：必填。ARRAY数组。array
中的 T 指代ARRAY数组元素的数据类型。说明 当ARRAY数组
中的元素...
语法 UTL_RAW.CONCAT(r1 IN RAW DEFAULT NULL,r2 IN RAW DEFAULT NULL,r3 IN RAW DEFAULT NULL,r4 IN RAW DEFAULT NULL,r5 IN RAW DEFAULT NULL,r6 IN RAW DEFAULT NULL,r7 IN RAW DEFAULT NULL,r8 IN RAW DEFAULT NULL,r9 IN RAW DEFAULT ...
null"},"Reason":"null","ReasonMcmsKey":"null","ReasonMcmsContext":{"key":"null"},"Proposal":"null","ProposalMcmsKey":"null","ProposalMcmsContext":{"key":"null"},"UpstreamErrorDetail":"null"},"Code":"INNER_ERROR","Message...
Reason":"null","ReasonMcmsKey":"null","ReasonMcmsContext":{"key":"null"},"Proposal":"Contact the administrator.","ProposalMcmsKey":"null","ProposalMcmsContext":{"key":"null"},"UpstreamErrorDetail":"null"},"Code":"INNER_...
Reason":"null","ReasonMcmsKey":"null","ReasonMcmsContext":{"key":"null"},"Proposal":"null","ProposalMcmsKey":"null","ProposalMcmsContext":{"key":"null"},"UpstreamErrorDetail":"null"},"Code":"INNER_ERROR","Message":"A ...
Reason":"null","ReasonMcmsKey":"null","ReasonMcmsContext":{"key":"null"},"Proposal":"null","ProposalMcmsKey":"null","ProposalMcmsContext":{"key":"null"},"UpstreamErrorDetail":"null"}],"ErrorCode":"INNER_ERROR","ErrorMsg":...
Reason":"null","ReasonMcmsKey":"null","ReasonMcmsContext":{"key":"null"},"Proposal":"Contact the administrator.","ProposalMcmsKey":"null","ProposalMcmsContext":{"key":"null"},"UpstreamErrorDetail":"null"},"Code":"INNER_...
Reason":"null","ReasonMcmsKey":"null","ReasonMcmsContext":{"key":"null"},"Proposal":"Contact the administrator.","ProposalMcmsKey":"null","ProposalMcmsContext":{"key":"null"},"UpstreamErrorDetail":"null"},"Code":"INNER_...
Reason":"null","ReasonMcmsKey":"null","ReasonMcmsContext":{"key":"null"},"Proposal":"Contact the administrator.","ProposalMcmsKey":"null","ProposalMcmsContext":{"key":"null"},"UpstreamErrorDetail":"null"},"Code":"INNER_...
Reason":"null","ReasonMcmsKey":"null","ReasonMcmsContext":{"key":"null"},"Proposal":"Contact the administrator.","ProposalMcmsKey":"null","ProposalMcmsContext":{"key":"null"},"UpstreamErrorDetail":"null"},"Code":"INNER_...
null","ReasonMcmsKey":"null","ReasonMcmsContext":{"key":"null"},"Proposal":"Contact the administrator.","ProposalMcmsKey":"null","ProposalMcmsContext":{"key":"null"},"UpstreamErrorDetail":"null"},"Code":"INNER_ERROR",...
null","ReasonMcmsKey":"null","ReasonMcmsContext":{"key":"null"},"Proposal":"Contact the administrator.","ProposalMcmsKey":"null","ProposalMcmsContext":{"key":"null"},"UpstreamErrorDetail":"null"},"Code":"INNER_ERROR",...
Reason":"null","ReasonMcmsKey":"null","ReasonMcmsContext":{"key":"null"},"Proposal":"Contact the administrator.","ProposalMcmsKey":"null","ProposalMcmsContext":{"key":"null"},"UpstreamErrorDetail":"null"},"Code":"INNER_...
Reason":"null","ReasonMcmsKey":"null","ReasonMcmsContext":{"key":"null"},"Proposal":"请联系管理员","ProposalMcmsKey":"null","ProposalMcmsContext":{"key":"null"},"UpstreamErrorDetail":"null"},"Code":"INNER_ERROR","Message...