case_when-case_when文档介绍内容-阿里云

EXISTS

DBMS_OUTPUT.PUT_LINE('The index exists:'|CASE WHEN sparse_arr.exists(10)=TRUE THEN 'true' ELSE 'false' END);END;The index exists:true 如果使用指定集合中不存在的下标调用某些集合方法，则这些方法会引发异常。EXISTS方法返回值...

v_dname:=CASE WHEN v_deptno=10 THEN 'Accounting' WHEN v_deptno=20 THEN 'Research' WHEN v_deptno=30 THEN 'Sales' WHEN v_deptno=40 THEN 'Operations' ELSE 'unknown' END;DBMS_OUTPUT.PUT_LINE(v_empno|' '|RPAD(v_ename,10)|' '|v_...

使用KubeAPI操作审计

to_city(ip)as"市",ip_to_provider(ip)as"运营商"from(select CASE WHEN json_array_length(sourceIPs)=1 then json_format(json_array_get(sourceIPs,0))ELSE sourceIPs END as ip,count(1)as total,sum(CASE WHEN"responseStatus.code")*...

使用KubeAPI操作审计

to_city(ip)as"市",ip_to_provider(ip)as"运营商"from(select CASE WHEN json_array_length(sourceIPs)=1 then json_format(json_array_get(sourceIPs,0))ELSE sourceIPs END as ip,count(1)as total,sum(CASE WHEN"responseStatus.code")*...

新建计算字段

例如将满足一定条件的客户等级定义为VIP客户：CASE WHEN[成交金额]>1000 AND[成交笔数]>5 THEN 'VIP' ELSE '普通' END 配置方式在数据预览页面，单击新建计算字段。在新建计算字段页面，配置参数后，单击确定。输入字段名称。点击引用...

DLF数据探索快速入门-淘宝用户行为分析

id))as uv,SUM(CASE WHEN behavior='click' THEN 1 ELSE 0 END)AS click,SUM(CASE WHEN behavior='cart' THEN 1 ELSE 0 END)AS cart,SUM(CASE WHEN behavior='collect' THEN 1 ELSE 0 END)AS collect,SUM(CASE WHEN behavior='pay' THEN 1 ...

删除账号

(在 '|d.datname|' DB中执行)' as"查询依赖的对象",case when deptype='a' then '权限依赖' when deptype='o' then 'Owner依赖' else deptype:text end as"依赖类型"from pg_shdepend s join pg_database d on(s.dbid=d.oid)join pg_roles ...

气泡图

select date_format(from_unixtime(_time_-_time_%60),'%H:%i')as minute,case when request_method='GET' and COUNT(1)>9000 then 3 when request_method='GET' and COUNT(1)>8500 then 2 when request_method='GET' and COUNT(1)>8000 ...

RDS SQL Server实例如何查看锁

SELECT dm_tran_locks.request_session_id,dm_tran_locks.resource_database_id,DB_NAME(dm_tran_locks.resource_database_id)AS dbname,CASE WHEN resource_type='OBJECT' THEN OBJECT_NAME(dm_tran_locks.resource_associated_entity_id)...

并行查询使用示例

LIMIT支持原始SQL语句，如下所示：select l_shipmode,sum(case when o_orderpriority='1-URGENT' or o_orderpriority='2-HIGH' then 1 else 0 end)as high_line_count,sum(case when o_orderpriority<>'1-URGENT' and o_orderpriority<>'2...

RDS增量数据同步至MaxCompute

case when b.uid is not null then b.uid else a.uid end as uid,case when b.uid is not null then b.uname else a.uname end as uname,case when b.uid is not null then b.deptno else a.deptno end as deptno,case when b.uid is not ...

RDS增量数据同步至MaxCompute

case when b.uid is not null then b.uid else a.uid end as uid,case when b.uid is not null then b.uname else a.uname end as uname,case when b.uid is not null then b.deptno else a.deptno end as deptno,case when b.uid is not ...

CASE 语句

CASE WHEN boolean-expression THEN statements[WHEN boolean-expression THEN statements[WHEN boolean-expression THEN statements].][ELSE statements]END CASE;boolean-expression 按它在 CASE 语句中出现的顺序进行求值。当遇到求值...

如何创建特定时间段分析

表达式文本如下：case when hour([report_date])>=0 and hour([report_date])凌晨0-6' when hour([report_date])>=6 and hour([report_date])上午7-12' when hour([report_date])>=12 and hour([report_date])‘下午13-18’else‘晚上19-23...

Quick BI中如何通过聚合度量字段跳转或者联动展示该...

可以转换思路，采用即席SQL的方式新建数据集，SQL语句中用case when将具体的度量值标记划分范围且计算每个范围的总数，生成新的范围相关的维度字段，具体的范围字段值就为“度量1到100”、“100到500”、“度量500到1000”、“度量1000以上...

条件函数

SELECT a,CASE WHEN a=1 THEN 'one' WHEN a=2 THEN 'two' ELSE 'other' END FROM test;a case-+-1 one 2 two 3 other coalesce 返回参数列表中第一个非空表达式的值。说明仅当所有表达式为NULL时，结果返回NULL。select COALESCE(1,2);...

OceanBase 数据库 Oracle 租户之间的同步 DDL

迁移 OceanBase 数据库 MySQL 租户的数据至 OceanBase 数据库 MySQL 租户时，支持同步 DDL。同步 DDL 支持的范围创建表 ...不支持同步 case when index 的建表 DDL。开启增量 DDL 后，drop index 命令会无差别执行，可能导致目标端索引丢失。

Quick BI数据集预览报错：null:INTERNAL:java.sql....

CHAR(ALI_T_1_.`created_datetime`,'yyyy'),'Q',CEIL(TO_CHAR(ALI_T_1_.`created_datetime`,'mm')/3))AS T_A18_9_,TO_CHAR(ALI_T_1_.`created_datetime`,'yyyyMM')AS T_A73_10_,CONCAT(CASE WHEN datepart(ALI_T_1_.`created_datetime`,'mm...

RDS SQL Server如何查看实例、数据库及表占用的空间...

'' dbName,CONVERT(VARCHAR(19),GETDATE(),120)checkTime,LTRIM(STR(SUM(CASE WHEN RIGHT(FILENAME,3)<>''ldf'' THEN convert(dec(15,2),size)*8/1024 ELSE 0 END),15,2)+'' MB'')dbSize,LTRIM(STR(SUM(CASE WHEN RIGHT(FILENAME,3)=''ldf'...

性能白皮书（Nexmark性能测试）

dateTime TIMESTAMP(3),expires TIMESTAMP(3),seller BIGINT,category BIGINT,extra VARCHAR>,bid ROW,bidder BIGINT,price BIGINT,channel VARCHAR,url VARCHAR,dateTime TIMESTAMP(3),extra VARCHAR>,dateTime AS CASE WHEN event_...

估算函数

查询和分析语句*|SELECT approx_percentile(request_time,case when request_time,0.5)查询和分析结果示例4：根据 request_time 与权重的乘积对 request_time 列进行排序后，返回大约处于80%和90%位置的 request_time 字段的值。...

使用集群API Server审计功能

ip_to_city(ip)as"市",ip_to_provider(ip)as"运营商"from(select CASE WHEN json_array_length(sourceIPs)=1 then json_format(json_array_get(sourceIPs,0))ELSE sourceIPs END as ip,count(1)as total,sum(CASE WHEN"responseStatus.code...

TPC-DS测试集

sales)),wswscs AS(SELECT d_week_seq,SUM(CASE WHEN d_day_name='Sunday' THEN sales_price ELSE NULL END)AS sun_sales,SUM(CASE WHEN d_day_name='Monday' THEN sales_price ELSE NULL END)AS mon_sales,SUM(CASE WHEN d_day_name='...

与Hive、MySQL、Oracle内建函数对照表

其他函数 MaxCompute Hive MySQL Oracle BASE64 BASE64 TO_BASE64 UTL_ENCODE.BASE64_ENCODE BETWEEN AND表达式 BETWEEN AND BETWEEN AND BETWEEN AND CASE WHEN表达式 CASE WHEN CASE WHEN CASE WHEN CAST CAST CAST CAST COALESCE ...

其他问题

因此建议通过 case when 编写成一条 SQL 语句来执行，语法示例如下：UPDATE mytable SET myfield=CASE id WHEN 1 THEN 'value' WHEN 2 THEN 'value' WHEN 3 THEN 'value' END WHERE id IN(1,2,3)MyBatis 也是完全支持这种写法的，示例如下...

分析Apache日志

user_agent like '%Firefox%' then 'Firefox' when http_user_agent like '%Safari%' then 'Safari' else 'unKnown' end as http_user_agent,count(1)as pv group by case when http_user_agent like '%Chrome%' then 'Chrome' when ...

云数据库SQL Server版如何查看当前运行的SQL语句

SELECT[Spid]=session_id,[Database]=DB_NAME(sp.dbid),[User]=nt_username,[Status]=er.status,[Wait]=wait_type,[Individual Query]=SUBSTRING(qt.text,er.statement_start_offset/2,(CASE WHEN er.statement_end_offset=-1 THEN LEN...

配置值转化

您可以将值转化节点理解为SQL中的 case when 语句，表示形式如下：select case when temperature>50 and temperature<=80 then 'alarm'when temperature>80 then 'danger' else 'normal' end as alert_level 单击数据解析工作台右上角的保存...

产品定价

语法示例 select to_char(query_end,'DD Mon YYYY')as day,round(sum(case when read_bytes*1024*1024 then 10*1024*1024 else read_bytes end)/1024/1024)as"scan_size_mb"-每条查询至少10MB,count(*)as"sql_count"from hologres.hg_query...

alicloud_threat_detection_assets

detection_assets.default.assets.0.id } Argument Reference The following arguments are supported:criteria-(ForceNew,Optional)Set the conditions for searching assets.This parameter is in JSON format.Note the case when you ...

分析-行车轨迹日志

select case when total_amount< 1 then 'bill_0_1' when total_amount< 10 then 'bill_1_10' when total_amount< 20 then 'bill_10_20' when total_amount< 30 then 'bill_20_30' when total_amount< 40 then 'bill_30_40' when total_amount< 50 then 'bill...

OceanBase 数据库 Oracle 租户至 Oracle 数据库的同步...

同步 DDL 支持的范围创建表 CREATE TABLE 重要包括分区表，不包括 CREATE TABLE AS SELECT。删除表 DROP TABLE 清空表 TRUNCATE TABLE 添加分区 ADD PARTITION 支持添加一级分区和二级分区...存在 CASE WHEN INDEX 的建表 DDL 不支持同步。

不兼容SQL重写

CASE WHEN可能涉及更复杂的优化场景，比如：select case when key=0 then 0 else 1/key end from(select 0 as key from src union all select key from src)r;优化器会将除法下推到子查询中，转换类似于：M(select case when 0=0 then 0...

Quick BI报错“调用对象查询时异常：.Parse exception...

错误写法：count(字段名)正确写法：count([字段a])除法没有考虑分母为0的情况错误写法：sum([字段a])/sum([字段b])正确写法：case when sum([字段b])=0 then 0 else sum([字段a])/sum([字段b])end 写计算字段时，函数前写“=”错误写法：=...

联合日志服务查询分析智能接入网关流量

select srcaddr,srcport,dstaddr,dstport,protocol,count(*)as num,sum(bytes)as bytes from(select CASE WHEN strpos(bytes,'M')!0 then(CAST(replace(bytes,'M')AS double)*1024*1024)WHEN strpos(bytes,'K')!0 then(CAST(replace(bytes,...

常见问题

可以在数据集中新建一个计算字段间接实现，使用case when赋值，表达式为 case when 目标值>实际值 then 0 else 1 end，在交叉表中选择目标值、实际值、计算字段，并对这个计算字段设置条件格式。日期在转化时，Week能转成每周第一天么？...

使用SSMS迁移上云

1))AS[所占空间率%],CASE WHEN A.growth=0 THEN '文件大小固定，不会增长' ELSE '文件将自动增长' end[增长模式],CASE WHEN A.growth>0 AND is_percent_growth=0 THEN '增量为固定大小' WHEN A.growth>0 AND is_percent_growth=1 THEN '...

其他函数

CASE WHEN表达式命令格式 SQL分析提供以下两种 case when 格式：case<value>when<value1>then<result1>when<value2>then<result2>.else<resultn>end case when(<_condition1>)then<result1>when(<_condition2>)then<result2>when(<_...

MySQL函数支持

NOT&,~,^,>>,,&,XOR GREATEST,LEAST IN,NOT IN LIKE,NOT LIKE SIMILAR TO,NOT SIMILAR TO,REGEXP,NOT REGEXP,RLIKE,NOT RLIKE IS,IS NOT,IS NOT NULL,IS NULL INTERVAL BETWEEN AND BIT_COUNT 条件函数 CASE WHEN[test1]THEN[result1]…...

分析IIS日志

select count(1)as pv,case when"user-agent"like '%Chrome%' then 'Chrome' when"user-agent"like '%Firefox%' then 'Firefox' when"user-agent"like '%Safari%' then 'Safari' else 'unKnown' end as"user-agent"group by case when"user...

case_when

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