2 max(case region when 'SZ' then employee_count else null end) employee_in_sz, 3 max(case region when 'SH' then employee_count else null end) employee_in_sh, 4 max(case region when 'HZ' then employee_count else null end) employee_in_hz 5 from 6 dept_emp_distribute 7 group by ...
It is often necessary to represent column-based data as rows, which leads to the use of the reverse command to PIVOT. Oracle provides the UNPIVOT operator, which allows us to break up the columns into separate rows by adding the columns you intend to unpivot in the IN clause. Note that ...
What Does it Mean to Pivot Rows to Columns in SQL? Pivoting in SQL refers to transforming data from a row-based format to a column-based format. This transformation is useful for reporting and data analysis, allowing for a more structured and compact data view. Pivoting rows to columns also...
Each time you modify the number of unique column values in your query, the Pivot Table will reflect those changes once you execute it. To do that, you won't need to drag data elements from Data Source tree, just use the SET command to choose their position. ...
Notice how the data has been completely rotated - what was previously in rows is now in columns, and vice versa. The region names that were in column A are now across row 1, and the sales figures that were in column B are now across row 2. When to use this method: For quick, on...
In reality it's quite often not as ideal. One quite common pattern is to have some data with a bunch of columns, where you'd really like those data as rows with, for example, key-value pairs, where the key would be derived from the original column name and the value then would be...
ORA-30926 错误信息 "unable to get a stable set of rows in the source tables" 表示 Oracle 数据库在执行 SQL 操作(如 MERGE INTO 语句)时,无法从源表中获得一组稳定的行。这通常是因为在参与查询的源表之间存在不确定的或重复的行集,导致 Oracle 无法确定一个稳定的更新或合并集。 2. 常见原因 重复数...
We need to come up with a way to join all the relatedPersonentries before performing the pivot column operation. Since Power Query doesn’t have anUndofeature, we can remove the “Pivot Column” step by clicking the “X” to the left of the step listed in theApplied Stepspanel. ...
Now I can use this in SQL: insert into a (keys, text) values (1, assemble_clob(1, 3)); Notice how this simplifies the insert statement. When I query table A, I get: SQL> column text format a30 SQL> select * from a; KEYS TEXT ...
=== REF https://stackoverflow.com/questions/14328621/splitting-string-into-multiple-rows-in-oracle https://stackoverflow.com/questions/38371989/how-to-convert-comma-separated-values-to-rows-in-oracle 1. 2. 3. 4. 5. 6.