Use an Alias in a statement Where clause

Similar Questions

• alias in where clause

  Hello
  
  It is a question of OCA certification.
  
  1. SQL > SELECT prod_name, prod_list_price, prod_list_price-(prod_list_price*.25) "DISCOUNTED_PRICE".
  PRODUCTS
  WHERE the discounted_price < 10;
  
  The query generates an error.
  What is the reason for generating fault?
  A. the parentheses should be added to frame the entire expression
  B. the quotes should be removed from the column alias
  C. column aliases must be replaced by the expression in the WHERE clause
  D. column aliases must be capitalized and closed double quotes in the WHERE clause
  
  Answer: D
  
  
  My question is how we can use aliases ("DISCOUNTED_PRICE") in where clause (WHERE "DISCOUNTED_PRICE" < 10)?
  
  Please specify.

  Hello

  C. response (and I think, you not write review at this time)

  You cannot use alias name in the WHERE clause.

  And if you want to continue to use DISCOUNTED_PRICE in the WHERE clause, you can use view inline.

  SELECT *
  FROM (SELECT prod_name,prod_list_price,prod_list_price-(prod_list_price*.25) "DISCOUNTED_PRICE"
  FROM products
  )
  WHERE  WHERE discounted_price<10;
  

  See you soon,.
  Suri

• Where clause using dblink

  Dear friends,
  
  Is there a way to access some of the columns using dblink but without using the quotes?
  
  and also where clause without use of quote?
  
  Please guide me
  
  Thank you very much
  
  Nith

  user645399 wrote:
  But is it possible to access Oracle's SQL Server using dblink without quotes to select columns?

  YES, it is possible, but the table names and column names must be UPPERCASE only

• How to use a function in a Where Clause?

  Hello
  I have a doubt. If MY_FUNCT is a function that returns a Boolean value, can I use in a where clause clause to write a query like this? :
  
  Select...
  table one
  where the...
  *...*
  and MY_FUNC (a.field) = true
  *...*
  *;*
  
  Thank you!
  
  Published by: Mark1970 on 3.27 lug-2-2010

  But is it possible that the function does not return a Boolean value?

  Yes (as sysdate, substr and instr etc.) you can also use your own function in a where clause clause, as long as it does not return a BOOLEAN value.

  I mean how to use a function in a where clause clause?

  Your own pseudocode seems a good example for me.
  So, just give it a try.

• Where-Clause-Question by using "defined values.

  Hello
  
  I use 10 gr 2
  
  It is possible to filter the lines using sets of values in the where clause?
  
  As for example:

  SELECT a, b, c
    FROM mytable
    WHERE (b,c) IN
      (
        (3,4),
        (6,7),
        (9,1),
        (0,2)
      )

  .. must retrieve only the rows from myTable with sets (pairs) over the top of the list

  It is not difficult to test:

  with my_tab as (select 1 a, 2 b, 3 c from dual union all
                  select 2 a, 2 b, 2 c from dual)
  select * from my_tab
  where (b, c) in ((1,2), (2,3));
  
           A          B          C
  ---------- ---------- ----------
           1          2          3
  

• where clause to query the hierarchy in the tree Apex area does not

  Hi all

  I am building a tree Menu in Apex 5.0.3 (Oracle 11 g XE), when using when the clause, it does show all the data, but without him, showing all the data.

  I'm trying to populate Tree Menu with data specific to a user successfully logged on.

  (A) table created as HR2. TREE_MENU

  menu_name varchar2 (50).

  number of menu_parent

  number of menu_child

  menu_id varchar2 (12),

  menu_path varchar2 (100),

  number of user_no

  (B) SQL statement for the tree in the Apex region

  Select case when connect_by_isleaf = 1 then 0

  When level = 1 then 1

  else                           -1

  end the status,

  level,

  'Menu_name' as the title,

  NULL as an icon,

  "MENU_CHILD" as a value.

  NULL as ToolTip,

  NULL as link

  to HR2. "" TREE_MENU ".

  -WHERE USER_NO =: P_USERNO

  Start with 'MENU_CHILD' is null

  connect prior "MENU_PARENT" = "MENU_CHILD."

  brothers and sisters of order by 'MENU_ID '.

  Note: also used static value where clause but is not workd.

  that the mistake of me or something else? When using the wizard, she asks (possibly) where clause, this means that when the clause can be used in the SQL statement.

  Help, please.

  Kind regards.

  If you want to prune your tree to show only the elements of the No. 7 usermenu, copy the following code helps you

  select case when connect_by_isleaf = 1 then 0
              when level = 1             then 1
              else                           -1
         end as status,
         level,
         "MENU_NAME" as title,
         null as icon,
         "MENU_CHILD" as value,
         null as tooltip,
         null as link
  from HR2."TREE_MENU"
  start with "MENU_CHILD" is null
  connect by
      prior "MENU_PARENT" = "MENU_CHILD"
      and "USER_NO" = 7
  order siblings by "MENU_ID"
  

  Concerning

  Mahmoud

• DB2 where clause problem

  Hello
  
  I want to use where clause in the View with BindVeriable object.
  
  How can I use?
  
  Concerning
  
  Kiran SANCHEZ

  You cannot use Oracle bind variables when you use DB2. Use JDBC positional Binding Style in your query. You can use something like this in your where clause:

  Where Field1 =? AND Field2 =?

  Then set the 2 variables bind bind positions 0 and 1.

  Make sure that you used DB2 Sql-flavor and a Java type map when creating business logic of your application (the first time you create a component of business adf).

• Expand the view read-only object where Clause

  Hello
  
  Is there a way I can add another where, condition of the clause to a viewobject unalterable in my bean limit support more query? The view object has a where clause itself clause which I want to thank. However, it is not editable or based on an entity object.

  Hello

  You can use ViewCriteriaRow to add where clause dynamically.

  http://download.Oracle.com/docs/CD/E15051_01/apirefs.1111/e10653/Oracle/JBO/ViewCriteriaRow.html

  In addition, you can also use a variable binding in the where clause and use setWhereClauseParams method before calling executeQuery.

  http://download.Oracle.com/docs/CD/E15051_01/apirefs.1111/e10653/Oracle/JBO/ViewObject.html#setWhereClause (java.lang.String)

  HTH.

  Arun-

• With the help of a list in a clause Where Clause

  I try to use a dynamic list, in a where clause clause, not having much luck and we tried different ways.
  
  Here's the closest thing I can find, the only problem is that the output returns an error caused by comma in where criteria if the list contains several items.
  
  Any help would be greatly appreciated!
  
  SELECT is the name of my list by commas.
  
  < name cfquery = 'list' datasource = "#dbnm #" >
  SELECT *.
  Students
  When status = ' #x # ' and (id = #Listqualify(select,"") #)
  < / cfquery >

  When the use of lists in sql, you do not use an equal sign. You use the key word in. You must also put your list in parentheses.

• pl/sql is it possible to put the cursor in where clause?

  Hello
  
  I have this stored proc that works very well when it is passed a single ID... now he must pass a list of IDS as in
  function (cursor (select id from table))...
  
  
  its definition is like this:
  RETURN ACTIV_PKG.tADR_ACTIV PIPELINED IS function ADR_ACTIV (pi_NO_SEQ IN sys_refcursor)
  CURSOR c1 (p_NOSEQ IN sys_refcursor) IS
  WITH Lateststate AS
  (SELECT RESUM_ETA.NO_SEQ_CLE_PRIM NO_SEQ_ADR,
  ADR.NO_SEQ,
  RESUM_ETA. COD_ETA
  OF RESUM_ETA
  JOIN INTERNAL ADR
  ON ADR.NO_SEQ_ADR = RESUM_ETA.NO_SEQ_CLE_PRIM
  WHERE RESUM_ETA. COD_TBL = "ADR1".
  
  and IN ADR.NO_SEQ (p_NOSEQODS)
  
  
  )...
  
  You see that 'and ADR.NO_SEQ IN (p_NOSEQODS)' lines using only those on the list filters...
  
  the idea is to use the cursor c1 like this:
  BEGIN
  FOR rec1 IN c1 (pi_NO_SEQ)
  LOOP
  ...
  
  Except that I get an error with (p_NOSEQODS) because it is not supported...
  
  y at - there a trick to this?
  
  Should I use table instead of cursor in where clause IN (...)?
  
  
  I have not in a list of IDS and put it in where clause of my cursor c1... How to get there?
  
  Thanks for the advice/links
  
  See you soon!

  the idea is to use the cursor c1 like this:
  FOR rec1 IN c1 (pi_NO_SEQ)

  Don't know if it's really less awkward that solution regexp, but we here are:

     cur   sys_refcursor;
  
     cursor c2 (cur sys_refcursor)
     is
        select   *
          from   emp
         where   empno in (select   trim (t.column_value.extract ('//text()'))
                             from   table (xmlsequence (cur)) t);
  begin
     open cur for
        select   7788 from dual
        union all
        select   7900 empno from dual;
  
     for c in c2 (cur)
     loop
        dbms_output.put_line (c.ename);
     end loop;
  end;
  /
  SCOTT
  JAMES
  PL/SQL procedure successfully completed.
  

• Can I use truncated and where clause in the statement even?

  Hello guys,.
  
  Can I use truncated with where clause in the same statement.
  
  
  For ex:
  
  TRUNCATE TABLE my_table WHERE id < 500;
  
  If not, that you recommend me to overtemperature to the level of high water line?
  
  
  By the way
  

  select * from v$version;

  Oracle Database 11 g Enterprise Edition Release 11.2.0.1.0 - 64 bit Production
  PL/SQL Release 11.2.0.1.0 - Production
  "CORE 11.2.0.1.0 Production."
  AMT for 64-bit Windows: Version 11.2.0.1.0 - Production
  NLSRTL Version 11.2.0.1.0 - Production
  >
  
  Thank you very much.
  
  Published by: 970992 on 11:14 13.Ara.2012

  >
  Okay I need an increasing amount of space. However, at the same time I want to recover the spaces empty below HWM. So, I need to use less amount of space I am inserting. Therefore, shouldn't use retractable for this?
  >
  Why waste the effort. Oracle will reuse the space below the HWM when doing inserts. You already said that you insert more lines you delete so all these will be more accustomed to the top.

  The only time where that oracle may not use space is when the space is too small to be useful. It is documented in the doc, I told you
  >
  Understanding recoverable unused space
  Over time, Update, and Delete on objects within a tablespace can create pockets of empty space that individually are not large enough to be reused for the new data.
  >
  Most uses of CONTRACTION I've seen are totally useless. If you follow the doc and run the Advisor of segment it will tell you if there is space that can be retrieved and how much. But, even once, for your use even if case will get you will Oracle while you need to reassign the new extensions, then the HWM will just go still higher.

  If pay you a heavy price in Oracle did a full table scan, update of many blocks from the table, update THE index, impact performance for other users to access the table during the SHRINK and reallocate extensions (maybe even some of the same areas) when you insert more data.

  Do not SHRINK unless you know it's necessary.

• using case when statement or decode unfavorable in where clause

  Hi the gems...
  
  I have a problem in the following query...
  I try to use when case statement in where clause of a select query.
  
  
  Select cr.customer_name. ' - ' || CR.customer_number as cust_name,
  CR. Salary salary
  of customer_details cr
  where (case when ' > ' = ' > ' then ' cr.salary > 5000')
  When ' > ' = ' < ' then ' cr.salary < 5000'
  When ' > ' = '=' and then 'cr.salary = 5000'
  Another null
  (end);
  
  
  the expression in the when clause of the statement of the case, when comes from HQ and according to the choice I have to make the where clause.
  That is why, for the execution of the query, I put ' > ' in this place.
  
  If the original query will look like this (for reference):
  
  Select cr.customer_name. ' - ' || CR.customer_number as cust_name,
  CR. Salary salary
  of customer_details cr
  where (case when variable = ' > ' then ' cr.salary > 5000')
  When the variable = ' < ' then ' cr.salary < 5000'
  When the variable = '=' and then 'cr.salary = 5000'
  Another null
  (end);
  
  
  so, in a real case, if the user selects ' > ' then the filter will be ' where cr.salary > 5000.
  If the user selects ' < ' then the filter will be ' where cr.salary < 5000.
  If the user selects '=', then the filter will be 'where cr.salary = 5000 '.
  
  but I get the error "ORA 00920:invalid relational operator.
  
  Help, please... Thanks in advance...

  Hello

  select cr.customer_name || ' - ' ||cr.customer_number as cust_name,
         cr.salary                                      as salary
   from customer_details cr
  where (    v_variable = 'bigger'
         and cr.salary > 5000
        )
     or (    v_variable = 'less'
        and cr.salary < 5000
         )
     or (    v_variable = 'eq'
          and cr.salary = 5000
         )
  

  Published by: user6806750 on 22.12.2011 14:56
  For some reason that I can't write in sql "<', '="">", "=".

• Tuning - using the CASE statement in the WHERE clause of the query

  Hi all
  
  My request has been changed to use a CASE statement in the WHERE clause to examine the data to some columns based on a parameter value. This modified request is made a full table and constantly running scan. Please suggest what can be done to improve its performance:
  
  Query:

  SELECT LAST_DAY(TRUNC(TO_TIMESTAMP(os.requestdatetime, 'yyyymmddhh24:mi:ss.ff4'))) AS summary_date,
  os.acctnum,
  os.avieworigin_refid,
  COUNT(1) cnt_articleview,
  SUM(NVL(autocompletedterm,0)) cnt_autocompletedterm
  FROM TABLE1 os
  WHERE os.acctnum IS NOT NULL
  AND os.avieworigin_refid IS NOT NULL
  AND os.requestdatetime IS NOT NULL
  AND UPPER(os.success_ind) = 'S'
  
  AND CASE WHEN
  Param_ValueToCheck  = 'FULL' AND get_date_timestamp(os.requestdatetime)  BETWEEN 
  TO_DATE('01-MAY-2011 00:00:00','DD-MON-YYYY HH24:MI:SS') AND
  TO_DATE('31-MAY-2011 00:00:00','DD-MON-YYYY HH24:MI:SS')
  THEN 1
  WHEN
  Param_ValueToCheck  = 'INCR' AND os.entry_createddate  BETWEEN 
  TO_DATE('01-MAY-2011 00:00:00','DD-MON-YYYY HH24:MI:SS') AND
  TO_DATE('31-MAY-2011 00:00:00','DD-MON-YYYY HH24:MI:SS')
  THEN 1
  END = 1
  AND CASE WHEN
  Param_ValueToCheck  = 'FULL' AND os.entry_CreatedDate BETWEEN 
  TO_DATE('01-APR-2011 00:00:00','DD-MON-YYYY HH24:MI:SS') AND
  TO_DATE('07-JUN-2011 00:00:00','DD-MON-YYYY HH24:MI:SS')
  THEN 1
  WHEN
  Param_ValueToCheck  = 'INCR' THEN 1
  END = 1
  GROUP BY LAST_DAY(TRUNC(TO_TIMESTAMP(os.requestdatetime, 'yyyymmddhh24:mi:ss.ff4'))), os.acctnum,os.avieworigin_refid;

  Description of the table:
  (Number of lines: approx. > amount 600 000 000)

  Name                           Null     Type       
  ------------------------------ -------- ------------
  ARTICLEID                      NOT NULL NUMBER(20) 
  USERKEY                                 NUMBER(10) 
  AVIEWORIGIN_REFID                       VARCHAR2(10)
  SUCCESS_IND                             VARCHAR2(2)
  ENTRY_CREATEDDATE                       DATE       
  CREATED_BY                              VARCHAR2(10)
  FILENUMBER                              NUMBER(10) 
  LINENUMBER                              NUMBER(10) 
  ACCTNUM                                 VARCHAR2(10)
  AUTOCOMPLETEDTERM                       NUMBER(2)  
  REQUESTDATETIME                         VARCHAR2(19)

  Explain Plan

  SQL> select * from table(dbms_xplan.display);
  
  PLAN_TABLE_OUTPUT
  ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
  Plan hash value: 2224314832
  
  ----------------------------------------------------------------------------------------------------------
  | Id  | Operation            | Name              | Rows  | Bytes | Cost (%CPU)| Time     | Pstart| Pstop |
  ----------------------------------------------------------------------------------------------------------
  |   0 | SELECT STATEMENT     |                   |   590 | 33040 |  2501K  (1)| 08:20:15 |       |       |
  |   1 |  HASH GROUP BY       |                   |   590 | 33040 |  2501K  (1)| 08:20:15 |       |       |
  |   2 |   PARTITION RANGE ALL|                   |   590 | 33040 |  2501K  (1)| 08:20:15 |     1 |1048575|
  |*  3 |    TABLE ACCESS FULL | TABLE1 |   590 | 33040 |  2501K  (1)| 08:20:15 |     1 |1048575|
  ----------------------------------------------------------------------------------------------------------
  
  
  PLAN_TABLE_OUTPUT
  ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
  Predicate Information (identified by operation id):
  ---------------------------------------------------
  
     3 - filter(UPPER("OS"."SUCCESS_IND")='S' AND CASE  WHEN ('FULL'='FULL' AND
                "OS"."ENTRY_CREATEDDATE">=TO_DATE(' 2011-04-01 00:00:00', 'syyyy-mm-dd hh24:mi:ss') AND
                "OS"."ENTRY_CREATEDDATE"<=TO_DATE(' 2011-06-07 00:00:00', 'syyyy-mm-dd hh24:mi:ss')) THEN 1 WHEN
                'FULL'='INCR' THEN 1 END =1 AND "OS"."REQUESTDATETIME" IS NOT NULL AND CASE  WHEN ('FULL'='FULL'
                AND "ODS"."GET_DATE_TIMESTAMP"("REQUESTDATETIME")>=TO_DATE(' 2011-05-01 00:00:00', 'syyyy-mm-dd
                hh24:mi:ss') AND "ODS"."GET_DATE_TIMESTAMP"("REQUESTDATETIME")<=TO_DATE(' 2011-05-31 00:00:00',
                'syyyy-mm-dd hh24:mi:ss')) THEN 1 WHEN ('FULL'='INCR' AND "OS"."ENTRY_CREATEDDATE">=TO_DATE('
                2011-05-01 00:00:00', 'syyyy-mm-dd hh24:mi:ss') AND "OS"."ENTRY_CREATEDDATE"<=TO_DATE('
  
  PLAN_TABLE_OUTPUT
  ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
                2011-05-31 00:00:00', 'syyyy-mm-dd hh24:mi:ss')) THEN 1 END =1 AND "OS"."ACCTNUM" IS NOT NULL AND
                "OS"."AVIEWORIGIN_REFID" IS NOT NULL)

  Published by: Chaitanya on June 9, 2011 02:44
  
  Published by: Chaitanya on June 9, 2011 02:47

  When it is executed individually, MERGE LOGIC 1 and LOGIC of MERGE 2 take about ten for a daterange of 30 days data.

  BUT FULL is to get the scores of APR - JUN, INCR becomes partitions for MAY so not both 30 days.
  Are compare us like with like?

• Using a CASE statement in 'IN' where clause clause

  Hello

  I have a form that users see after they connect with a few items and they type or select values based on the element type. All reports in the application use these values of PAGE 1 in where clause to filter the lines.

  One of these question is "Quarter".  I have a group of radio buttons on the PAGE 1 on the P1_QTR point.

  I need to provide users a way to take the last 4, last 3, last 2 or current quarter and I need to dynamically build a clause WHERE the interactive report based on the selection in the form.

  I am trying to use the CASE as shown below and get the syntax error.

  AND QTR to (when BOX: P1_QTR = 'CURRENT' then ("T4"))

  When: P1_QTR = "LAST" then ("Q3")

  When: P1_QTR = 'LAST TWO' then ('Q3, "Q4")

  When: P1_QTR = 'LAST THREE' then ("Q2", "Q3,' T4 ')

  another ("T1", "T2", "Q3,' T4 ')

  END)

  How can I achieve this?

  Following a simple logic, try

  and QTR to

  (

  Select 'T4' double where: P1_QTR <> 'LAST '.

  Union of all the

  Select 'Q3' to double where: P1_QTR <> "in PROCESS".

  Union of all the

  Select "Q2" double where: P1_QTR not in ('CURRENT', 'LAST', "LAST TWO")

  Union of all the

  Select "Q1" double where: P1_QTR not in ('CURRENT', 'LAST', 'LAST TWO', 'THREE LATEST')

  )

• How to set a null column in a where clause clause involving a statement box

  In oracle APEX, I a (selection list) element called: P32_STATUS. It contains two values of interest (for this discussion): 'Available' and 'checked '. In my report, I have a column called vc_status that contains two values: "Checkbox" and NULL. In my application I want to use a case statement in my where clause similar to the lines of

  where

  .

  .

  .

  AND (vc_status = CASE WHEN: P32_STATUS = "Checkbox" THEN : P32_STATUS )

  WHEN : P32_STATUS = 'Available' THEN NULL END)

  The 'box' filtering works but the filtering to try to vc_status the NULL value does not work. Can someone help me? Thank you!

  (P.S. My intuition says that there because I can not put vc_status = NULL, but I must say that vc_status IS NULL... However, I don't know how to do execution IS ZERO inside a CASE statement)

  Hello

  Your intuition is right...

  In Oracle NULL is a bit special:

  NULL = NULL is false

  NULL <> NULL is false

  Thus, instead of the parameter a NULL value in the CASE WHERE there is just set a value on the other side:

  NVL (vc_statut, 'Available') =: P32_STATUS

  That's all! Simple, clean and functional