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Thread: group by clause didn't work

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  1. #1
    Join Date
    Oct 2002
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    CA
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    group by clause didn't work

    I recently installed a 9i database, however, I have noticed my group by clause didn't work right by some strange reasons.

    SQL> l
    1 select owner,object_type,count(*) from
    2* dba_objects group by owner,object_type

    OWNER OBJECT_TYPE COUNT(*)
    ------------------------------ ------------------ ----------
    RAM SYNONYM 51
    SYS LOB 28
    SYS TYPE 465
    SYS VIEW 2087
    SYS INDEX 311
    SYS QUEUE 4
    SYS TABLE 341
    SYS CLUSTER 10
    SYS CONTEXT 1
    SYS LIBRARY 62
    SYS PACKAGE 342

    OWNER OBJECT_TYPE COUNT(*)
    ------------------------------ ------------------ ----------
    SYS SYNONYM 6
    SYS TRIGGER 10
    SYS FUNCTION 41
    SYS OPERATOR 1
    SYS SEQUENCE 41
    SYS JAVA DATA 293
    SYS PROCEDURE 25
    SYS TYPE BODY 23
    SYS JAVA CLASS 8789
    SYS JAVA SOURCE 8
    SYS PACKAGE BODY 318

    OWNER OBJECT_TYPE COUNT(*)
    ------------------------------ ------------------ ----------
    SYS JAVA RESOURCE 173
    SYS RESOURCE PLAN 3
    SYS CONSUMER GROUP 4
    SYS EVALUATION CONTEXT 1
    HIEN TABLE 4
    HIEN SYNONYM 51
    --------------------------------------
    It's not what the world does to you that matters. It's how you respond...

  2. #2
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    Clarification - the order of records is wrong

    Just for a clarification, what I mean is that the sort order of records is wrong.
    --------------------------------------
    It's not what the world does to you that matters. It's how you respond...

  3. #3
    How do you mean - what was wrong?

    -B

  4. #4
    Join Date
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    Birmingham, UK
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    Whats wrong with that?

  5. #5
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    HIEN should come before RAM and SYS. Does GROUP BY also order the records for you?
    It works only on the 8.17 environment I have listed below.

    8.17 environment
    -----------------------

    SQL> select owner,object_type,count(*) from
    2 dba_objects group by owner,object_type;

    OWNER OBJECT_TYPE COUNT(*)
    ------------------------------ ------------------ ----------
    ALUMNI FUNCTION 15
    ALUMNI INDEX 380
    ALUMNI PROCEDURE 68
    ALUMNI TABLE 320
    ALUMNI TRIGGER 4
    BANINST1 FUNCTION 190
    BANINST1 PACKAGE 199
    BANINST1 PACKAGE BODY 198
    BANINST1 PROCEDURE 21
    BANINST1 VIEW 138
    BANSECR INDEX 7

    OWNER OBJECT_TYPE COUNT(*)
    ------------------------------ ------------------ ----------
    BANSECR PACKAGE 3
    BANSECR PACKAGE BODY 3
    BANSECR SEQUENCE 1
    BANSECR TABLE 8
    BANSECR VIEW 2
    DBSNMP SYNONYM 4
    GENERAL INDEX 209
    GENERAL SEQUENCE 6
    GENERAL TABLE 199
    GENERAL TRIGGER 23
    GENERAL VIEW 2

    OWNER OBJECT_TYPE COUNT(*)
    ------------------------------ ------------------ ----------
    HIEN SYNONYM 51
    HIEN TABLE 4
    JAMES TABLE 1
    MBOOTE INDEX 1
    MBOOTE TABLE
    --------------------------------------
    It's not what the world does to you that matters. It's how you respond...

  6. #6
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    You should not expect them to be sorted. Under 7.3.4 you got the sort as a free bonus - from 8.something you have to include the "order by".

  7. #7
    Join Date
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    Location
    Geneva Switzerland
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    Originally posted by james_cc
    It works only on the 8.17 environment I have listed below.
    That is luck. In general in 8.1.7 you need "order by"

  8. #8
    Join Date
    Oct 2002
    Location
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    Just curious, how can I easily combine group by and order by in order to get the count(*) and sort order to work at the same time? Since I have never used the two together that would work, unless I rewrite the query using field alias etc.


    1 select owner,object_type,count(*) from
    2* dba_objects group by owner,object_type
    --------------------------------------
    It's not what the world does to you that matters. It's how you respond...

  9. #9
    Join Date
    Nov 2002
    Location
    Geneva Switzerland
    Posts
    3,142
    select owner, object_type, count(*)
    from dba_objects
    group by owner,object_type
    order by owner,object_type

    OR

    order by 1,2

  10. #10
    Join Date
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    Location
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    Thanks Dapi
    --------------------------------------
    It's not what the world does to you that matters. It's how you respond...

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