Simple PL/SQL syntax _ cursor

Case

Declare
I number: = 1;
J varchar2 (11 );
Begin
Case (I)
When 1 then J: = 'hahaha ';
When 2 then J: = 'xixi ';
Else J: = 'no find ';
End case;
Dbms_output.put_line (j );
End;

Cursor

Declare
Cursor cname is select * From sec_hrc_audit;
Var11 cname % rowtype;
Begin
Open cname;
Loop
Fetch cname into var11;
Dbms_output.put_line (var11.hrc _ Code );
Exit when cname % notfound;
End loop;
Dbms_output.put_line (rpad ('superman ', 20, 'ss '));
Close cname;

Loop1

Declare
Cursor cursor_name is select * From sec_hrc_audit;
Begin

For idx in cursor_name Loop
Dbms_output.put_line (idx. hrc_code );
End loop;

Loop2

Declare

Begin

For idx in (select * From sec_hrc_audit) loop
Dbms_output.put_line (idx. hrc_code | 'total rows ');
End loop;
End;

Cursor_count

Declare
Cursor cursor_name is select * From sec_hrc_audit;
Rowc number (22 );
Begin
For idx in cursor_name Loop
Dbms_output.put_line (idx. hrc_code | 'haha ');
Rowc: = cursor_name % rowcount;

End loop;
Dbms_output.put_line (rowc );
End;

Cursor_forupdate

Declare
Cursor cursor_name is select * From sec_hrc_audit for update of hrc_code;
Bighrc number (10 );
Begin

For idx in cursor_name Loop
Bighrc: = 3;
Update sec_hrc_audit set hrc_code = bighrc where current of cursor_name;
End loop;
Commit;

Cursor _ variable

Declare
Type RC is ref cursor return sec_hrc_audit % rowtype;
Var1 RC;
RT sec_hrc_audit % rowtype;
Type REC is record (hrc_code number (4), hrc_name varchar2 (2 ));
Type RC2 is ref cursor return REC;

Begin
Open var1 for select * From sec_hrc_audit;
Fetch var1 into RT;
Dbms_output.put_line (RT. hrc_code );
End;

Forloop

Declare
Line number: = 50;
Separator varchar2 (1): = ';
Actual varchar2 (150 );
I number: = 1;
Begin
For idx in 1 .. line Loop
Actual: = actual | separator;
I: = I + 1;
End loop;
Dbms_output.put_line (actual );
End;

Selectinto

Declare
Type REC is record (code number (2), num number (2 ));
Rec1 REC;
Begin
Select * into rec1 from ABC where hrc_code = 2;
NULL;
End;

Whileloop

Declare
Line number: = 50;
Separator varchar2 (1): = ';
Actual varchar2 (150 );
I number: = 1;
Begin
While (I <line) loop
Actual: = actual | separator;
I: = I + 1;
End loop;
Dbms_output.put_line (actual );
End;

Implicit cursor

Declare

Begin
-- Delete ABC where hrc_code = 1;
Insert into ABC (hrc_code) Select hrc_code from sec_hrc_audit where hrc_code = 1;
If (SQL % found) then
Dbms_output.put_line ('successful insert ');
End if;
Commit;
End;