1/** 这里的表名默认区分大小写*/2select'create or replace view as select'||wm_concat(column_name)||'from APP_USER'sqlStr3fromuser_tab_columnswheretable_name='APP_USER'; 利用系统表方式查询 1select*fromuser_tab_columns Oracle 11g 行
行转列查询 select * from (select name, nums from demo) pivot (sum(nums) for name in ('苹果' 苹果, '橘子', '葡萄', '芒果')); 1. 注意: pivot(聚合函数 for 列名 in(类型)) ,其中 in(‘’) 中可以指定别名,in中还可以指定子查询,比如 select distinct code from customers...
Pivot语法: SELECT ... FROM PIVOT ( aggregate-function(<column>) FOR <pivot-column>IN (<value1>, <value2>,..., <valuen>) )AS <alias> WHERE ... 注意: FOR <pivot-column> 这个是不支持表达式的,如果需要,请通过子查询或者视图先预处理。 Pivot 例子1:先构造一个子查询,然后根据CHANNEL列...
[sql]view plain copy SELECT ... FROM PIVOT ( aggregate-function(<column>) FOR <pivot-column> IN (<value1>, <value2>,..., <valuen>) ) AS <alias> WHERE ... 注意: [sql]view plain copy FOR <pivot-column> 这个是不支持...
ORA-00933: SQL command not properly ended 00933.00000 - "SQL command not properly ended" *Cause: *Action: Error at Line: 127 Column: 1 This is because the WHERE clause must come after the PIVOT clause. A correct query would look like this: ...
Matt contributed this handy SQL techniques to pivot one row of several columns into a single column with several row, using the Oracle cross join syntax. Matt notes that the Cross join "has other uses in conjunction with a WHERE clause to create triangular result sets for rolling totals etc ...
编写一个 SQL 查询来重新格式化表,使得新的表中有一个部门 id 列和一些对应 每个月 的收入(revenue)列。 查询结果格式如下面的示例所示: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 Department 表:+---+---+---+|id|revenue|month|+---+---+---+|1|8000|Jan||2|9000|Jan||3|10000|Fe...
问Oracle sql中的PIVOTEN我已经编写了一个查询，如下所示DECLARE @sql_col VARCHAR(8000); DECLARE @...
SQL Server Integration Services (SSIS) > 大容量复制实用工具 (bcp) Microsoft SQL Server 平台上的大数据选项 Azure 迁移服务 > 迁移指南 复制 导入和导出向导 数据库实验助手 (DEA) 数据迁移助手 (DMA) SQL Server 迁移助手 (SSMA) SSMA 概述 使用情况和诊断数据 ...
Forward references are not allowed in PL/SQL. So, you must declare a cursor before referencing it in other statements. When you declare a cursor, you name it and associate it with a specific query using the syntax CURSOR cursor_name [(parameter[, parameter]...)][RETURN return_type] IS ...