behavior of NULL nested tables. : Table of Varchar2 « PL SQL « Oracle PL / SQL

behavior of NULL nested tables.

     
SQL>
SQL> DECLARE
  2    TYPE wordTableType IS TABLE OF VARCHAR2(50);
  3
  4   
  5    myTable1 wordTableType;
  6
  7   
  8    myTable2 wordTableType := wordTableType();
  9  BEGIN
 10    IF myTable1 IS NULL THEN
 11      DBMS_OUTPUT.PUT_LINE('myTable1 is NULL');
 12    ELSE
 13      DBMS_OUTPUT.PUT_LINE('myTable1 is not NULL');
 14    END IF;
 15
 16    IF myTable2 IS NULL THEN
 17      DBMS_OUTPUT.PUT_LINE('myTable2 is NULL');
 18    ELSE
 19      DBMS_OUTPUT.PUT_LINE('myTable2 is not NULL');
 20    END IF;
 21  END;
 22  /
myTable1 is NULL
myTable2 is not NULL

PL/SQL procedure successfully completed.

SQL>
SQL>

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