Sum with 'group by cude' : SUM « Aggregate Functions « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial » Aggregate Functions » SUM

12. 8. 2. Sum with 'group by cude'


SQL>

SQL>

SQL> select         owner,

  2                 tablespace_name,

  3                 sum(bytes)/(1024*1024) total_meg

  4      from dba_extents

  5      where rownum < 50

  6      group by cube (owner,tablespace_name)

  7      /



OWNER                          TABLESPACE_NAME                 TOTAL_MEG

------------------------------ ------------------------------ ----------

                                                                       4

                               SYSTEM                                  4

SYS                                                                    4

SYS                            SYSTEM                                  4

12. 8. SUM
	12. 8. 1.	SUM(x) adds all the values in x and returns the total.
	12. 8. 2.	Sum with 'group by cude'
	12. 8. 3.	Sum with null value
	12. 8. 4.	Sum column for a certain time period
	12. 8. 5.	Sum() function and having clause
	12. 8. 6.	Sum salary group by department number

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