Loop on column A + condition on column B = sum (column C)

Hello

I currently have the following pl/sql:

Select sum (case when xpr.past_week = 'Y' and xpr.costgroup = '12111' then xpr.qtyout)

otherwise 0 end) as qtyout

of xxmlx_probing_report_v xpr.


What I need is for the "costgroup" column to not be limited to one! I have to be able to loop over all the costgroup values available in the X_REPORT_V view.

How can I do this? How to apply this logic in a function?

Thanks for the answers in advance.

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I think that you probably just want:

SELECT xpr.costgroup, sum (CASE WHEN xpr.past_week = 'Y') THEN xpr.qtyout

ELSE 0 END) AS qtyout

OF xxmlx_probing_report_v xpr

Xpr.costgroup group;

Tags: Database

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    If the above is correct, can we write the following formula?

    NESTED LOOP = QUERY EXTERNAL (a low num lines FTS) & SUB QUERY (a high number of lines with INDEX)

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

    | ID | Operation | Name | Lines | Bytes | Cost (% CPU). Time |

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

    |   0 | SELECT STATEMENT |         |     1.    58.     4 (0) | 00:00:01 |

    |   1.  NESTED LOOPS |         |       |       |            |          |

    |   2.   NESTED LOOPS |         |     1.    58.     4 (0) | 00:00:01 |

    |*  3 |    TABLE ACCESS FULL | EMP |     1.    38.     3 (0) | 00:00:01 |

    |*  4 |    INDEX UNIQUE SCAN | PK_DEPT |     1.       |     0 (0) | 00:00:01 |

    |   5.   TABLE ACCESS BY INDEX ROWID| DEPT |     1.    20.     1 (0) | 00:00:01 |

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

    Concerning

    Charlie

    The optimizer uses nested loops"when the following conditions are met:

    • The database attached to small subsets of data.
    • The join condition is an effective way to access the second table. ":

    The query optimizer

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