Simple conditional SQL WHERE Clause with two Subselects

Hi SQL Experts,
I need some quick help with a query.
It is a ' select ' for a data source object repository phyiscal table OBI.
So, I can't put in PL/SQL or in stored procedures. I just need
have two conditions / selects different according to the user's role (this information comes
of the session).
The above does not work:

-ORA00905. 00000 - 'lack the key word'
SELECT OFFICENO FROM orgunit
WHERE

BOX WHEN "SESSION_VARIABLE' LIKE '% globalmanager %' THEN
ASSIGNEDOFFICES =
(
SELECT DISTINCT ASSIGNEDOFFICES
FROM USERSTABLE INNER JOIN orgunit WE
OrgUnit. KEY = USERSTABLE. OFFICE
WHERE USERSTABLE. USERNAME ='VALUEOF (NQ_SESSION. THE USER)"
)
ON THE OTHER
OFFICENO =
(
SELECT DISTINCT USERSTABLE OFFICENO
INNER JOIN orgunit WE
OrgUnit. KEY = USERSTABLE. OFFICE
WHERE USERSTABLE. USERNAME ='VALUEOF (NQ_SESSION. THE USER)"
)
END;

Can anyone help?

Hello

I can't tell what you want to do by looking at the code that do not do. Maybe:

SELECT officeno

For orgunit

WHERE (session_variable LIKE '% globalmanager %'

AND IN assignedofficies

(

SELECT assignedoffices

UserTable U1

JOIN orgunit o1 ON o1.officekey = u1.officekey

WHERE u1.username = ' VALUEOF (NQ_SESSION. THE USER)"

)

)

OR (NVL (session_variable

, '?'

) NOT LIKE '% globalmanager % '.

AND IN officeno

(

SELECT officeno

Of u2 usertable

JOIN orgunit o2 ON o2.officekey = u2.officekey

WHERE u2.username = ' VALUEOF (NQ_SESSION. THE USER)"

)

)

;

There might be a simpler and more efficient way in function your tables and your limit.

The condition u2.username = ' VALUEOF (NQ_SESSION. The USER) "almost certainly not what you really want.

.

Whenever you have any questions, post a small example data (CREATE TABLE and only relevant columns, INSERT statements) for all of the tables involved and also publish outcomes from these data.
Explain, using specific examples, how you get these results from these data.
Always say what version of Oracle you are using (for example, 11.2.0.2.0).

See the FAQ forum: https://forums.oracle.com/message/9362002#9362002

Tags: Database

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END;
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    CenterB

    A basic concept that is important to understand - sliders aren't 'sets of results' (sets of data in memory). A cursor is a series of executable steps (see plans run to cursor). It's like a program. An extraction run the program and output data. In general, which is repeated until the cursor (aka program) is no longer found the corresponding lines.

    A ref cursor is a pointer or a handle for a such slider, passed to a caller, allowing the appellant to interface directly with this slider/program.

    The slider more effective to create a search would be one without superfluous code and predicates and filters. Consider the following approach - a beefier PL/SQL procedure, do not try and play little tricks with SQL predicates in an attempt to create one (and probably not optimal) SQL.

    (not tested/compiled code)

    create or replace procedure SearchAddress(
  town     IN SEARCHADDRESS.TOWN%TYPE,
  street   IN SEARCHADDRESS.STREET%TYPE,
  postcode IN SEARCHADDRESS.POSTCODE%TYPE,
  refCur out ref_cursor
) is
  curHandle integer;
  res integer;
  searchSQL varchar2(1000);
begin
  -- create base query
  searchSQL := 'select searchaddress_pk from searchaddress where 1 = 1 ';

  -- add dynamic predicates as needed
  if town is not null then
    searchSQL := searchSQL || 'and town = :town';
  end if;

  if street is not null then
    searchSQL := searchSQL || ' and street = :street';
  end if;

  if postcode is not null then
    searchSQL := searchSQL || ' and postcode = :postcode';
  end if;

  -- create a DBMS_SQL cursor
  curHandle := DBMS_SQL.open_cursor;
  DBMS_SQL.parse( curHandle, searchSQL, DBMS_SQL.NATIVE );

   -- bind the dynamic bind variables added as predicate values
  if town is not null then
    DBMS_SQL.Bind_Variable( curHandle, 'town', town );
  end if;

  if street is not null then
    DBMS_SQL.Bind_Variable( curHandle, 'street', street );
  end if;

  if postcode is not null then
    DBMS_SQL.Bind_Variable( curHandle, 'postcode', postcode );
  end if;

  -- execute cursor (to create the cursor program) and pass it back as a ref cursor
  res := DBMS_SQL.Execute( curHandle );
  refCur := DBMS_SQL.To_RefCursor( curHandle );
end;

  • Dynamic WHERE Clause with multiple ORs

    I need to build a dynamic SQL statement such as the clause WHERE looks / works as follows:

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    I can do the above, no problem, but I wonder if there is a better way?

    Thank you

    Mark

    Hi, Mark,.

    You should not need dynamic SQL for that.

    For example, if you are still interested in substrings of characters suingle, and you get entry as a unique string called str (e.g. '123' it which means you want to find the rows where x contains '1', '2' or 3'), so you could say:

    ...

    WHERE (x REGEXP_LIKE

    , '[' || str || ']'

    )

    I hope that answers your question.
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    Explain, using specific examples, how you get these results from these data.
    Always say what version of Oracle you are using (for example, 11.2.0.2.0).

    See the FAQ forum: https://forums.oracle.com/message/9362002#9362002

  • Where clause with XMLExists and join to another table

    Hello

    We have table as:

    drop table xml_tbl;

    create table xml_tbl)
    whole xml_msg_id
    xmltype xml_msg_text
    );

    insert into xml_tbl values
    (1, "< principal > < id > 1 < /ID > < / hand > '");

    insert into xml_tbl values-(xml_msg_id, xml_msg_text)
    (1, "< principal > < id > 2 < /ID > < / hand > '");


    Another table like:

    create the table1 Table:
    (id1 int);

    Insert into Table1 values (2);
    Insert into Table1 values (3);

    We need to have a view on top of the table xml_tbl where/hand/IDs should only have the values located in id1 column of the Table1 table.

    Something like

    CREATE OR REPLACE VIEW V_xml_tbl
    (
    xml_msg_text
    )
    AS
    SELECT T.xml_msg_text
    OF xml_tbl T
    WHERE (XMLEXISTS)
    ' declare namespace Namesp1 = "Abc: Set";
    Let $Results as XS: Boolean: = fn:exists($p/main/id_in_(Select_id1_from_Table1))-now, here I know that I can't select id1 of

    Table 1
    return if ($Results) then true() (else)"
    PASSAGE T.xml_msg_text AS 'p');


    In fact, in the scenario real Table1 will have several IDs and xml_tbl a lot of XML files...
    So I'm stuck on how to do it. Help, please.

    Thank you...

    Published by: user8941550 on November 20, 2012 19:19

    One of these two:

    SQL> select t.xml_msg_text
  2  from xml_tbl t
  3  where exists (
  4    select null
  5    from table1 t1
  6    where t1.id1 = xmlcast(
  7                     xmlquery('/main/id' passing t.xml_msg_text returning content)
  8                     as integer
  9                   )
 10  );

XML_MSG_TEXT
--------------------------------------------------------------------------------

    
  2

    
     

    
SQL> select t.xml_msg_text
  2  from xml_tbl t
  3     , xmltable('/main' passing t.xml_msg_text
  4         columns id integer path 'id'
  5       ) x
  6  where exists (
  7    select null
  8    from table1 t1
  9    where t1.id1 = x.id
 10  );

XML_MSG_TEXT
--------------------------------------------------------------------------------

    
  2

    And a third, using XMLExists:

    SQL> select t.xml_msg_text
  2  from xml_tbl t
  3  where xmlexists (
  4    'fn:collection("oradb:/DEV/TABLE1")/ROW[ID1=$d/main/id]'
  5    passing t.xml_msg_text as "d"
  6  );

XML_MSG_TEXT
------------------------------------------------------------------------------------------------------------------------

    
  2

    

Execution Plan
----------------------------------------------------------
Plan hash value: 3633580934

-------------------------------------------------------------------------------
| Id  | Operation           | Name    | Rows  | Bytes | Cost (%CPU)| Time     |
-------------------------------------------------------------------------------
|   0 | SELECT STATEMENT    |         |     2 |   116 |     8   (0)| 00:00:01 |
|*  1 |  FILTER             |         |       |       |            |          |
|   2 |   TABLE ACCESS FULL | XML_TBL |     2 |   116 |     3   (0)| 00:00:01 |
|   3 |   NESTED LOOPS      |         |     1 |     5 |     5   (0)| 00:00:01 |
|   4 |    TABLE ACCESS FULL| TABLE1  |     2 |     6 |     3   (0)| 00:00:01 |
|*  5 |    XPATH EVALUATION |         |       |       |            |          |
-------------------------------------------------------------------------------

Predicate Information (identified by operation id):
---------------------------------------------------

   1 - filter( EXISTS (SELECT 0 FROM "DEV"."TABLE1"
              "SYS_ORAVW_2",XPATHTABLE('/main/id' PASSING :B1 COLUMNS "C_00$" XMLTYPE
              PATH '.', "C_01$" XQEXVAL CHAR PATH '.')  "P" WHERE
              TO_BINARY_DOUBLE("ID1")=TO_BINARY_DOUBLE("P"."C_01$")))
   5 - filter(TO_BINARY_DOUBLE("ID1")=TO_BINARY_DOUBLE("P"."C_01$"))

    The plan is similar to that of the second query above (XMLTable/EXISTS).

    Still using XMLExists, a plan similar to the first query (EXISTS, XMLCast, XMLQuery) can be achieved by id of casting to an integer data type:

    SQL> select t.xml_msg_text
  2  from xml_tbl t
  3  where xmlexists (
  4    'fn:collection("oradb:/DEV/TABLE1")/ROW[ID1=xs:int($d/main/id)]'
  5    passing t.xml_msg_text as "d"
  6  );

XML_MSG_TEXT
------------------------------------------------------------------------------------------------------------------------

    
  2

    

Execution Plan
----------------------------------------------------------
Plan hash value: 1149640166

------------------------------------------------------------------------------
| Id  | Operation          | Name    | Rows  | Bytes | Cost (%CPU)| Time     |
------------------------------------------------------------------------------
|   0 | SELECT STATEMENT   |         |     1 |    61 |     7  (15)| 00:00:01 |
|*  1 |  HASH JOIN SEMI    |         |     1 |    61 |     7  (15)| 00:00:01 |
|   2 |   TABLE ACCESS FULL| XML_TBL |     2 |   116 |     3   (0)| 00:00:01 |
|   3 |   TABLE ACCESS FULL| TABLE1  |     2 |     6 |     3   (0)| 00:00:01 |
------------------------------------------------------------------------------

Predicate Information (identified by operation id):
---------------------------------------------------

   1 - access("ID1"=SYS_XQ_ATOMCNVCHK(TO_NUMBER(SYS_XQ_UPKXML2SQL(SYS_XQ
              EXVAL(SYS_XQEXTRACT(SYS_MAKEXML(0,"T"."SYS_NC00003$"),'/main/id'),1,50,3
              3792,8192),50,1,0)),2,37))

Note
-----
   - Unoptimized XML construct detected (enable XMLOptimizationCheck for more information)

    Check each on your real-world scenario to see that present better performance.
    (I would say those involving streaming of assessment)

    Published by: odie_63 on 5 nov. 2012 12:24

    Published by: odie_63 on 5 nov. 2012 12:38

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