How to check if a numeric value is around or not?

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  Hi all
  
  How to check if a string exists in varray or not.
  
  

  Version Details 
  
  
  BANNER
  ----------------------------------------------------------------
  Oracle Database 10g Express Edition Release 10.2.0.1.0 - Product
  PL/SQL Release 10.2.0.1.0 - Production
  CORE    10.2.0.1.0      Production
  TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
  NLSRTL Version 10.2.0.1.0 - Production

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    1  DECLARE
    2     TYPE dnames_var IS VARRAY(7) OF VARCHAR2(30);
    3     dept_names dnames_var := dnames_var('Shipping','Sales','Finance','Payroll');
    4  BEGIN
    5    if dept_names.exists('Shipping')
    6    then
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    9  /*   DBMS_OUTPUT.PUT_LINE('dept_names has ' || dept_names.COUNT
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   15  */
   16* END;
   17  
   18  /
  DECLARE
  *
  ERROR at line 1:
  ORA-06502: PL/SQL: numeric or value error: character to number conversion error
  ORA-06512: at line 5
  
  
  SQL> 
  
  Any help in this regard is appreciated ...

  Thank you
  Prakash P
  
  Published by: prakash on April 29, 2012 05:42

  EXISTS checks for the existence of an element, not a value. Since you're using VARRAY (btw, it is not recommended), your only choice is a loop through:

  SQL> DECLARE
    2       TYPE dnames_var IS VARRAY(7) OF VARCHAR2(30);
    3       dept_names dnames_var := dnames_var('Shipping','Sales','Finance','Payroll');
    4  BEGIN
    5      for i in 1..dept_names.count loop
    6        if dept_names(i) = 'Shipping'
    7          then
    8            dbms_output.put_line('Exists ................');
    9            exit;
   10        end if;
   11      end loop;
   12  END;
   13  /
  Exists ................
  
  PL/SQL procedure successfully completed.
  
  SQL>  
  

  If you use the nested table, you can use MEMBER, SUMBULTISET, MULTISET EXCEPT:

  SQL> DECLARE
    2       TYPE dnames_var IS TABLE OF VARCHAR2(30);
    3       dept_names dnames_var := dnames_var('Shipping','Sales','Finance','Payroll');
    4  BEGIN
    5      if 'Shipping' member of dept_names
    6      then
    7         dbms_output.put_line('Exists ................');
    8      end if ;
    9  END;
   10  /
  Exists ................
  
  PL/SQL procedure successfully completed.
  
  SQL> DECLARE
    2       TYPE dnames_var IS TABLE OF VARCHAR2(30);
    3       dept_names dnames_var := dnames_var('Shipping','Sales','Finance','Payroll');
    4  BEGIN
    5      if dnames_var('Shipping') submultiset dept_names
    6      then
    7         dbms_output.put_line('Exists ................');
    8      end if ;
    9  END;
   10  /
  Exists ................
  
  PL/SQL procedure successfully completed.
  
  SQL> DECLARE
    2       TYPE dnames_var IS TABLE OF VARCHAR2(30);
    3       dept_names dnames_var := dnames_var('Shipping','Sales','Finance','Payroll');
    4  BEGIN
    5      if dnames_var('Shipping') multiset except dept_names = dnames_var()
    6      then
    7         dbms_output.put_line('Exists ................');
    8      end if ;
    9  END;
   10  /
  Exists ................
  
  PL/SQL procedure successfully completed.
  
  SQL> 
  

  SY.

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  If the user enters the value 'character' in the field 'Amount' syster must raise the error.
  
  How can I achieve this?
  
  Help, please!
  
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  Apex 4.1

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  Yong Huang wrote:

  Dear Experts,

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  First the table structure and data table.
  

  CREATE TABLE SAMPLE (ILOAN_CODE NUMBER, TRAN_ID VARCHAR2(10),PAY_PRINIPAL NUMBER, PAY_INTEREST NUMBER);
  
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  So, you want the same output as the request of Vivek? One way is to use the query of Vivek. Another is:

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  ,       t.tran_id
  ,       t.pay_principal, t.pay_interest
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