Update before a report shows with bind variable

I need to update a table before a report shows. This report have bind variable and I need bind variable value for clause where in update, how can I do that?
I would thank so much any idea

Mery,
If I understand correctly your application should display a report when it is called.
But first, before the report is displayed, you want to update a table, using a bind variable passed into the report when it is called. Do I understand correctly so far?
So while editing the report, in the last tab option you have (Additional PL/SQL Code), you need to put some pl/sql code into section titled '...before displaying the page.'
declare
begin
update table_x
set column_x = somevalue
where column_y = bind_variable;
end;
I haven't yet passed bind variables into reports so I'm not quite sure how to retrieve them, but I'm sure there are other postings here about that.
I'm mostly just trying to clarify if this is what your asking, and maybe somebody else can answer the rest of your questions.
Good luck.
Kurt

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  • Report Performance with Bind Variable

    Getting some very odd behaviour with a report in APEX v 3.2.1.00.10
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    The trace file did show some control characters (circumflex M) after each line of this report's query where these weren't anywhere else on the trace queries. I wondered if there was some sort of corruption in the source?
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  • SLOW report performance with bind variable

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    Execute      1      0.00       0.01          0          1         27           0
    Fetch        2     13.15      13.22      67694      72865          0           1
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    Parsing user id: 62  (ODPS_PRIVACYVAULT)   (recursive depth: 1)
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      ----------------------------------------   Waited  ----------  ------------
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      db file sequential read                       812        0.00          0.02
      direct path read                             1552        0.00          0.61
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    Parse        1      0.02       0.04          0          0          0           0
    Execute      1      0.00       0.00          0          0         13           0
    Fetch        2      0.00       0.00          0          8          0           1
    total        4      0.02       0.04          0          8         13           1
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    Rows     Row Source Operation
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          1   FILTER  (cr=10 pr=0 pw=0 time=0 us)
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          1     NESTED LOOPS  (cr=7 pr=0 pw=0 time=0 us cost=8 size=80 card=1)
          1      SORT UNIQUE (cr=4 pr=0 pw=0 time=0 us cost=5 size=16 card=1)
          1       TABLE ACCESS BY INDEX ROWID PERSON_SYSTEMS (cr=4 pr=0 pw=0 time=0 us cost=5 size=16 card=1)
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          1      INDEX UNIQUE SCAN PK_PERSONS (cr=3 pr=0 pw=0 time=0 us cost=1 size=0 card=1)(object id 68506)
          1     TABLE ACCESS BY INDEX ROWID PERSONS (cr=1 pr=0 pw=0 time=0 us cost=2 size=64 card=1)
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          0  SELECT STATEMENT   MODE: ALL_ROWS
          1   SORT (ORDER BY)
          1    FILTER
          1     NESTED LOOPS
          1      NESTED LOOPS
          1       SORT (UNIQUE)
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          1         INDEX   MODE: ANALYZED (RANGE SCAN) OF
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          1       INDEX   MODE: ANALYZED (UNIQUE SCAN) OF 'PK_PERSONS'
                      (INDEX (UNIQUE))
          1      TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF
                     'PERSONS' (TABLE)

    Patrick, interesting insight. Thank you.
    The optimizer must be peeking at my bind variables with it's eyes closed. I'm the only one testing and I've never passed %anything as a bind value. :)
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    To get performance up to acceptable levels I have changed my function returning query to:
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    Jeff, regarding your question about "like '%' || :P71_SEARCH_SOURCE1 || '%'". I've found that putting wildcards around values, particularly at the beginning will negate any indexing on the column in question and slows performance even more.
    I'm still left wondering if there isn't something in Apex that is breaking the optimizer "peeking" that Patrick describes. Perhaps something in the way it switches contexts from apex_public_user to the workspace schema?

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        p_collection_name in varchar2,
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    VANJ wrote:
    Apex 4.0.2
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      , p_names => apex_util.string_to_table('p1_x:p1_y')
      , p_values => apex_util.string_to_table(v('p1_x') || ':' || v('p1_y')))

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