如果开启了项目空间数据保护,屏显行数受READ_TABLE_MAX_ROW参数值限制,配置上限为10000行。 说明 您可以执行show SecurityConfiguration;命令查看ProjectProtection属性配置。如果ProjectProtection=true,根据项目空间数据保护需求判断是否关闭数据保护机制。如果可以关闭,通过set ProjectProtection=false;命令关闭。ProjectProtection...
由于SQL的max函数只能取出最大值,而不是最大值对应的记录,因此处理起来会比较复杂,只能用窗口函数或嵌套子查询以及keep/top/rownumber等高级技巧来间接处理。如果是多层分组、多级关联,计算过程会更加复杂。 集算器的top函数可以取出最大值对应的记录,解决此类问题会更加容易,下面用一个例子来说明。 数据库表golf存储...
Because of theGROUP BYclause, only one row containing the sum of all sales is returned for each sales order. G. Use GROUP BY with multiple groups The following example finds the average price and the sum of year-to-date sales, grouped by product ID and special offer ID. ...
Solved: Hello, Can somebody help me with the following problem. I have two value columns that I need to compare them row by row to get the max value
with recursive tmp1(b) as (values(1) union all (with tmp2 as not materialized (select * from tmp1) select tt1.b + tt2.b from tmp2 tt1, tmp2 tt2)) select * from tmp1; column_name指定子查询结果集中显示的列名。 每个子查询可以是SELECT,VALUES,INSERT,UPDATE或DELETE语句。 plan_hint...
DISTINCT ONexpression is explained with the same rule ofORDER BY. Unless you useORDER BYto guarantee that the required row appears first, you cannot know what the first row is. SELECT list Specifies the name of a column in the table to be queried. The value can be a part of the column...
A constant specifying that the same constant value appears in every row of the query results. An expression that can be the name of a user-defined function. For more information about using user-defined functions, see User-Defined Functions with SELECT in the Remarks section. Each item you sp...
how to get row id of a datarow How to get sum of all parent and child elements in linq? how to get sum using linq in datatable with multiple where condition? How to get the distinct value form DataTable using LINQ? How to get the number of rows selected by a LINQ query? How to...
只好依次MAX(1) + MAX(2) + MAX(3)这种办法来处理。 实现 第一步,设置好分组的编号 SELECT ROW_NUMBER() OVER(PARTITION BY name ORDER BY title) AS no, name, title FROM TestTitle ORDER BY name, title no name title --- --- --- 1李四 系统分析员 2李四 项目经理 1张三 程序员...
-- false表示不从RowKind获取事件类型 'sink.properties.columns' = 'id, name, __DORIS_DELETE_SIGN__' -- 显示指定stream load的导入列 ); INSERT INTO SELECTDB_SINK SELECT json_value(data,'$.id') as id, json_value(data,'$.name') as name, if(op_type='delete',1,0) as __DORIS_DELE...