NULL and Empty Nested Tables and NULL elements : Table of Number « Collections « Oracle PL/SQL Tutorial






SQL> declare
  2
  3    Type numberTableType is TABLE OF NUMBER;
  4
  5    v_numarray numberTableType;
  6
  7  begin
  8
  9    if v_numarray IS NULL then
 10
 11      dbms_output.put_line('v_numarray is null');
 12
 13    end if;
 14
 15    v_numarray :=NULL;
 16
 17    if v_numarray IS NULL then
 18
 19      dbms_output.put_line('v_numarray is null after assignment');
 20
 21    end if;
 22  end;
 23  /
v_numarray is null
v_numarray is null after assignment

PL/SQL procedure successfully completed.

SQL>








26.23.Table of Number
26.23.1.An example of declaring an Index-by table
26.23.2.Initializing a Nested Table
26.23.3.NULL and Empty Nested Tables and NULL elements
26.23.4.Is a table collection a null value
26.23.5.ORA-06531: Reference to uninitialized collection
26.23.6.Initialize table collection with null value
26.23.7.Accessing an Index-by table
26.23.8.Accessing an entire Index-by table
26.23.9.Accessing an undefined row of an Index-by table
26.23.10.Assigning rows of an Index-By table by means of a LOOP
26.23.11.Deleting an Index-by table using an empty Index-by table
26.23.12.Using the EXISTS method
26.23.13.An example of COUNT method
26.23.14.An example of the DELETE method
26.23.15.An example of the FIRST, LAST and NEXT methods
26.23.16.number_list.EXTEND(2): Add two null value members at the end of the list.
26.23.17.number_list.EXTEND(3,4): Add three members at the end of the list and copy the contents of item 4
26.23.18.Associative arrays
26.23.19.Accessing Nested Table elements
26.23.20.ORA-06533: Subscript beyond count
26.23.21.compare two tables of integers
26.23.22.Loop through table of number by index