Examine the following partial declare section from a block of PL/SQL code
Which line(s) in the above code are NOT valid? (Choose all that apply.)
A. line 2
B. line 3
C. line 4
D. line 5
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Examine the following partial declare section from a block of PL/SQL code
Which line(s) in the above code are NOT valid? (Choose all that apply.)
A. line 2
B. line 3
C. line 4
D. line 5
|
Download Printable PDF. VALID exam to help you PASS. |
|
In 19c it works fine.
D is working under 19c now.
DB version 12.2.0.1.0
Following block executes successfully:
declare
v_wage number := 1000;
v_total_wages v_wage%type;
work_complete constant boolean:=true;
all_work_complete work_complete%type;
begin
null;
end;
correct answer ONLY B
If we execute following statement then we get errors:
declare
v_wage number not null:=1000;
v_total_wages v_wage%type;
work_complete constant boolean:=true;
all_work_complete work_complete%type;
begin
null;
end;
/
ERROR at line 3:
ORA-06550: line 3, column 15:
PLS-00218: a variable declared NOT NULL must have an initialization assignment
ORA-06550: line 5, column 19:
PLS-00206: %TYPE must be applied to a variable, column, field or attribute, not to “WORK_COMPLETE”
ORA-06550: line 5, column 19:
PL/SQL: Item ignored
It fails on 3rd line because we need to assign value to variable v_total_wages which inherits not null
attribute from v_wage.
It fails on 5th line because “The %TYPE attribute lets you declare a constant, variable, collection element, record field, or subprogram parameter to be of the same data type as a previously declared variable or column (without knowing what that type is).” So constant work_complete can be referencing item, but not referenced item.
https://docs.oracle.com/en/database/oracle/oracle-database/12.2/lnpls/TYPE-attribute.html#GUID-EAB44F7E-B2AB-4AC6-B83D-B586193D75FC
Following rewritten block executes successfully:
declare
v_wage number not null:=1000;
v_total_wages v_wage%type:=500;
work_complete boolean:=true;
all_work_complete work_complete%type;
begin
null;
end;
/
PL/SQL procedure successfully completed.
The code works with 12.2, I am assuming you ran it in 11g and it differs? so since this certification is depended on 11g the answer will be B & D is it?