DECODE and CASE Examples

2023年1月13日 — You can use the DECODE function to group data based on a specific column: SELECT DECODE(department, 'IT', 'Technology', 'HR', 'Human ...

DECODE and CASE Examples The following sections present a variety of examples illustrating the uses of conditional logic in SQL statements.

2010年8月26日 — I have a select stmt. with decode and a sum. when I put the decode in the group by clause, it says not a group by expression. when I put ...

Can I use a group by on a decode? I am using the sql below and get an error message when I try to use the group by on a decode.

2019年4月2日 — You can do what you want with a LEFT JOIN and no conditional logic in the SELECT : SELECT co.company_id, co.companyname_1, cu.customer_id, ...

GROUP BY extensions such as ROLLUP and CUBE produce superaggregate rows where the set of all values is represented by null. Using the GROUPING function, you can ...

The following statement illustrates how to use the DECODE() function in the GROUP BY clause. It returns the number of products whose list prices are higher than ...

2018年4月16日 — 1 Answer 1 ... In general, when you use GROUP BY in a statement then all the values either need to be: constants; ...

2013年7月25日 — 它在结果集内作为列的占位符，表示全体。 GROUPING函数可以接受一列，返回0或者1。如果列值为空，那么GROUPING()返回1；如果列值非空，那么返回0。

2013年7月5日 — SQL> SELECT grade,. decode（GROUPING（ID），1,'合计',ID） ID,. SUM（num）. FROM a GROUP BY grade,rollup（ID）. GRADE ID SUM（NUM）. ---------- - ...