declare
sum number:=0;
count number:=0;
pnum number:=0;
temp number;
begin
for i in 1..25
loop
temp:=i;
count:=0;
for j in 1..25
loop
if mod(i,j)=0 then
count:=count+1;
end if;
end loop;
if count=2 then
sum:=sum+temp;
pnum:=pnum+1;
end if;
exit when pnum=10;
end loop;
dbms_output.put_line(sum);
end;
Error encountered on Oracle server:
ORA-06550: line 21, column 17: PLS-00103: Encountered the symbol "+"
when expecting one of the following:
(
ORA-06512: at "SYS.WWV_DBMS_SQL_APEX_180200", line 548 ORA-06550: line
28, column 25: PLS-00103: Encountered the symbol ")" when expecting
one of the following:
(
You are using reserved words SUM and COUNT; if you edit the name of your variables your code will work:
DECLARE
vSUM NUMBER := 0;
vCOUNT NUMBER := 0;
pnum NUMBER := 0;
temp NUMBER;
BEGIN
FOR i IN 1 .. 25
LOOP
temp := i;
vCOUNT := 0;
FOR j IN 1 .. 25
LOOP
IF MOD(i, j) = 0
THEN
vCOUNT := vCOUNT + 1;
END IF;
END LOOP;
IF vCOUNT = 2
THEN
vSUM := vSUM + temp;
pnum := pnum + 1;
END IF;
EXIT WHEN pnum = 10;
END LOOP;
DBMS_OUTPUT.put_line(vSUM);
END;
Related
Wanted to create a function that can return records containing the number data type which are prime number
But getting warning of compilation error. What is the mistake in the code.I am a beginner in pl/sql.
CREATE OR REPLACE FUNCTION isPrime (num number)
RETURN number
IS
retVal number;
BEGIN
DECLARE
prime_or_notPrime number;
counter number;
retVal:= 1;
prime_or_notPrime:= 1
counter:= 2
WHILE (counter <= num/2) LOOP
IF (mod(num ,counter)= 0) THEN
prime_or_notPrime: = 0
EXIT;
END IF;
IF (prime_or_notPrime = 1 ) THEN
retVal: = 1;
counter: = counter + 1
END IF;
END LOOP;
return retVal;
END;
/
What is the mistake in the code
The DECLARE is invalid syntax for a function/procedure. You want to declare the variables between the IS and BEGIN keywords.
Then you are missing a ; statement terminator after prime_or_notPrime:= 1 and counter:= 2.
Then you have:
prime_or_notPrime: = 0 instead of prime_or_notPrime := 0;
retVal: = 1; instead of retVal := 1; and
counter: = counter + 1 instead of counter := counter + 1; (they all have a space between : and = and some are missing ; again).
You never set retVal to anything other than 1.
You do not handle NULL values or values lower than 2.
Fixing that (and the indentation) gives:
CREATE OR REPLACE FUNCTION isPrime (num number)
RETURN number
IS
retVal number;
prime_or_notPrime number;
counter number;
BEGIN
IF NUM IS NULL OR NUM < 2 THEN
RETURN 0;
END IF;
retVal:= 1;
prime_or_notPrime:= 1;
counter:= 2;
WHILE (counter <= num/2) LOOP
IF (mod(num ,counter)= 0) THEN
prime_or_notPrime := 0;
retVal := 0;
EXIT;
END IF;
IF (prime_or_notPrime = 1 ) THEN
counter := counter + 1;
END IF;
END LOOP;
return retVal;
END;
/
Note: the prime_or_notprime variable is not controlling anything as, as soon as you set it to 0 you EXIT from the loop so it will never be used again. Having noted that, you can get rid of the final IF statement and just always increment the counter.
You can simplify it to:
CREATE OR REPLACE FUNCTION isPrime (
num number
) RETURN number DETERMINISTIC
IS
BEGIN
IF NUM IS NULL OR NUM < 2 THEN
RETURN 0;
END IF;
FOR counter IN 2 .. SQRT(num) LOOP
IF MOD(num, counter) = 0 THEN
RETURN 0;
END IF;
END LOOP;
RETURN 1;
END;
/
You can then consider improvements. Such as starting by checking 2 as a special case and then skipping all the other even numbers.
db<>fiddle here
I was trying to use the variable 'ind' to get the ROWNUM on my select, but everytime I try to use the variable there I get a error like:
ORA-01008: not all variables bound
or these two:
ORA-01403: no data found
ORA-06512: at line 10
DECLARE
texto VARCHAR2(255);
ind NUMBER := 0;
BEGIN
LOOP
ind := ind + 1;
IF ind > 3 THEN
EXIT;
END IF;
SELECT TEXTO_LOG
INTO texto
from table WHERE REGEXP_LIKE(TEXTO_LOG, 'Alteração') AND ROWNUM >= :ind AND ROWNUM <= :ind ;
dbms_output.put_line(substr(trim(texto), 1, instr(texto, ' ')));
dbms_output.put_line(substr(texto, 0, 100));
END LOOP;
END;
/
I searched and found someone telling that not all variables bound is a bug, I'm not sure if it's.
I tried the ROWNUM with different opperators. Any suggestions?
Usage of rownum is the problem here apart from other issues already answered. a predicate like rownum>=2 and rownum <=2 (and so on...till exit point) yield no result and thus no_data_found error
But as workaround put the rownum inside from clause and restrict it outside should work,
DECLARE
texto VARCHAR2(255);
ind NUMBER := 0;
BEGIN
LOOP
ind := ind + 1;
IF ind > 3
THEN
EXIT;
END IF;
SELECT texto_log
INTO texto
FROM (SELECT texto_log
,rownum myrownum
FROM TABLE
WHERE regexp_like(texto_log
,'Alteração'))
WHERE myrownum >= ind
AND myrownum <= ind;
dbms_output.put_line(substr(TRIM(texto)
,1
,instr(texto
,' ')));
dbms_output.put_line(substr(texto
,0
,100));
END LOOP;
END;
/
The error is that you are referring to :ind as if it were a bind variable, when it is not. It is in fact a variable declared in your DECLARE section.
You might try this
** Update **
As your query looks like it is faling, the reason perhaps is in the query itself. Run this and get the output and running separately
set serveroutput on size unlimited
DECLARE
texto VARCHAR2(255);
ind NUMBER := 0;
BEGIN
for r in 1..4
LOOP
ind := r + 1;
dbms_output.put_line ( q'[SELECT TEXTO_LOG
INTO texto
from table WHERE REGEXP_LIKE(TEXTO_LOG, 'Alteração') AND ROWNUM <= ind ;
dbms_output.put_line(substr(trim(texto), 1, instr(texto, ' ')));
dbms_output.put_line(substr(texto, 0, 100));]');
exit when ind > 3;
END LOOP;
END;
/
Although you can build it like this which is easier
DECLARE
texto VARCHAR2(255);
ind NUMBER := 0;
BEGIN
for r in 1..4
LOOP
ind := r + 1;
dbms_output.put_line(ind);
SELECT TEXTO_LOG
INTO texto
from table WHERE REGEXP_LIKE(TEXTO_LOG, 'Alteração') AND ROWNUM >= ind AND ROWNUM <= ind ;
dbms_output.put_line(substr(trim(texto), 1, instr(texto, ' ')));
dbms_output.put_line(substr(texto, 0, 100));
exit when ind > 3;
END LOOP;
END;
/
EXample
SQL> DECLARE
texto VARCHAR2(255);
ind NUMBER := 0;
BEGIN
for r in 1..4
LOOP
ind := r + 1;
dbms_output.put_line(ind);
exit when ind > 3;
END LOOP;
END;
/ 2 3 4 5 6 7 8 9 10 11 12
2
3
4
PL/SQL procedure successfully completed.
SQL>
With implicit cursor
DECLARE
-- texto VARCHAR2(255);
ind NUMBER := 0;
BEGIN
FOR i IN (SELECT TEXTO_LOG FROM table WHERE REGEXP_LIKE(TEXTO_LOG, 'Alteração'))
LOOP
ind:=ind+1;
EXIT WHEN ind >3;
DBMS_OUTPUT.PUT_LINE(SUBSTR(TRIM(i.TEXTO_LOG), 1, INSTR(i.TEXTO_LOG, ' ')));
DBMS_OUTPUT.PUT_LINE(SUBSTR(i.TEXTO_LOG, 0, 100));
END LOOP;
END;
I am able to insert values but failed to retrieve values. Thanks in anticipation.
declare
type type1 is table of number;
type data_type is table of type1;
y data_type;
begin
y := data_type();
y.extend(100);
for i in 1..100 loop
y(i) := type1();
y(i).extend(100);
for j in 1..100 loop
y(i)(j) := i+j;
end loop;
end loop;
end;
If I understand well, you need a way to scan your arrays;
this could be a way:
declare
type type1 is table of number;
type data_type is table of type1;
y data_type;
k number := 2;
begin
y := data_type();
y.extend(k);
for i in 1..k loop
y(i) := type1();
y(i).extend(k);
for j in 1..k loop
y(i)(j) := i+j;
end loop;
end loop;
-- scanning
for i in y.first .. y.last loop
for j in y(i).first .. y(i).last loop
dbms_output.put_line('Y(' || i || ')(' || j || ') = ' || y(i)(j));
end loop;
end loop;
end;
the result:
Y(1)(1) = 2
Y(1)(2) = 3
Y(2)(1) = 3
Y(2)(2) = 4
Input String : “a4b4c2d9d9c2e6e6b4s2o1o1s2a4w2r8r8k3g5g5k3w2”
I tried this code as first step:
declare
word varchar2(50) := 'a4b4c2d9d9c2e6e6b4s2o1o1s2a4w2r8r8k2g5g5k2w2';
num number := length(word)/2;
name_array dbms_sql.varchar2_table;
begin
dbms_output.put_line(word);
FOR i IN 1..num LOOP
name_array(i) := substr(word, -2*i, 2);
END LOOP;
FOR i IN name_array.FIRST .. name_array.LAST LOOP
dbms_output.put_line(name_array(i));
END LOOP;
end;
This code creates only an array of string. Not xml format. I need this output:
Which SQL functions,conditional clauses... do I need to use?
Oracle Setup:
CREATE OR REPLACE TYPE CHARS_TABLE IS TABLE OF CHAR(2);
/
CREATE OR REPLACE TYPE INTEGERS_TABLE IS TABLE OF INTEGER;
/
PL/SQL:
This assumes a well-formed set of character pairs and just indents each pair to the appropriate level:
DECLARE
word VARCHAR2(50) := 'a4b4c2d9d9c2e6e6b4s2o1o1s2a4w2r8r8k2g5g5k2w2';
num PLS_INTEGER := LENGTH( word ) / 2;
name_array CHARS_TABLE := CHARS_TABLE();
depth_array INTEGERS_TABLE := INTEGERS_TABLE();
open_array INTEGERS_TABLE := INTEGERS_TABLE();
BEGIN
name_array.EXTEND( num );
depth_array.EXTEND( num );
open_array.EXTEND( num );
name_array(1) := SUBSTR( word, 1, 2 );
depth_array(1) := 1;
open_array(1) := 1;
FOR i IN 2 .. num LOOP
name_array(i) := SUBSTR( word, 2*i - 1, 2 );
open_array(i) := 1;
FOR j IN 1 .. i-1 LOOP
IF name_array(j) = name_array(i) THEN
open_array(i) := -open_array(i);
END IF;
END LOOP;
depth_array(i) := depth_array(i-1) + open_array(i);
END LOOP;
FOR i IN 1 .. num LOOP
FOR j IN 2 .. depth_array(i) + CASE open_array(i) WHEN 1 THEN 0 ELSE 1 END LOOP
DBMS_OUTPUT.PUT( ' ' );
END LOOP;
DBMS_OUTPUT.PUT_LINE( name_array(i) );
END LOOP;
END;
/
Output:
a4
b4
c2
d9
d9
c2
e6
e6
b4
s2
o1
o1
s2
a4
w2
r8
r8
k2
g5
g5
k2
w2
Update - Simpler Stack-Based Version:
DECLARE
word CONSTANT VARCHAR2(50) := 'a4b4c2d9d9c2e6e6b4s2o1o1s2a4w2r8r8k2g5g5k2w2';
num CONSTANT PLS_INTEGER := LENGTH( word ) / 2;
name_array CHARS_TABLE := CHARS_TABLE();
depth PLS_INTEGER := 0;
name CHAR(2);
PROCEDURE indent( depth PLS_INTEGER, name CHAR )
IS
BEGIN
FOR j IN 2 .. depth LOOP
DBMS_OUTPUT.PUT( ' ' );
END LOOP;
DBMS_OUTPUT.PUT_LINE( name );
END;
BEGIN
name_array.EXTEND( num );
FOR i IN 1 .. num LOOP
name := SUBSTR( word, 2*i - 1, 2 );
IF depth > 0 AND name = name_array(depth) THEN
indent(depth,name);
depth := depth - 1;
ELSE
depth := depth - 1;
name_array(depth) := name;
indent(depth,name);
END IF;
END LOOP;
END;
/
DECLARE
vs_CurrentChar VARCHAR2(1);
vs_NextChar VARCHAR2(1);
vs_TempText VARCHAR2(100);
vs_InputText VARCHAR2(100) := 'abcdffdcba';
vn_LengthOfText NUMBER := 1;
vn_WhileIndex NUMBER := 1;
vs_Spaces VARCHAR(100);
BEGIN
vs_TempText := NULL;
vs_CurrentChar := substr(vs_InputText, vn_WhileIndex, vn_LengthOfText);
dbms_output.put_line(vs_CurrentChar);
WHILE vn_WhileIndex < length(vs_InputText) - 1 LOOP
vs_NextChar := substr(vs_InputText, vn_WhileIndex + 1, vn_LengthOfText);
EXIT WHEN vs_CurrentChar = vs_NextChar;
vs_TempText := vs_TempText || vs_CurrentChar;
vs_CurrentChar := vs_NextChar;
vs_Spaces := NULL;
FOR i IN 1 .. vn_WhileIndex LOOP
vs_Spaces := vs_Spaces || chr(9); --'*';
END LOOP;
dbms_output.put_line(vs_Spaces || vs_CurrentChar);
vn_WhileIndex := vn_WhileIndex + 1;
END LOOP;
dbms_output.put_line(vs_Spaces || vs_CurrentChar);
FOR i IN 1 .. length(vs_TempText) LOOP
vs_Spaces := substr(vs_Spaces, vn_LengthOfText, length(vs_Spaces) - 1);
vs_CurrentChar := substr(vs_TempText, -i, vn_LengthOfText);
dbms_output.put_line(vs_Spaces || vs_CurrentChar);
END LOOP;
END;
/
And output:
a
b
c
d
f
f
d
c
b
a
even, if you put '*'; instead of chr(9); then output will look like as:
a
*b
**c
***d
****f
****f
***d
**c
*b
a
I am trying to write a code which checks whether a number is binary or not.
Here is my code.
declare
n INTEGER:=#
ch number:=0;
begin
loop
exit when n=0;
if(mod(n,10)!=0 or mod(n,10)!=1) then
ch:=1;
exit;
end if;
n:=n/10;
end loop;
if ch=1 then
dbms_output.put_line('Not a Binary number.');
else
dbms_output.put_line('Binary!!!');
end if;
end;
/
I am using Oracle 11g SQL Plus.
Sometimes it is giving error at line 2. Here is the snippet of error.
old 2: n INTEGER:=#
new 2: n INTEGER:=;
n INTEGER:=;
*
ERROR at line 2:
ORA-06550: line 2, column 12:
PLS-00103: Encountered the symbol ";" when expecting one of the following:
( - + case mod new not null <an identifier>
And if it is running correctly then for every number it is giving the same output as 'Not a Binary number.'.
Change the OR by AND in the IF statement. It seems to do what you want.
DECLARE
n INTEGER := #
ch NUMBER := 0;
BEGIN
LOOP
EXIT WHEN n = 0;
IF MOD(n, 10) != 0
AND MOD(n, 10) != 1
THEN
ch := 1;
EXIT;
END IF;
n := n / 10;
END LOOP;
IF ch = 1
THEN
dbms_output.put_line('Not a Binary number.');
ELSE
dbms_output.put_line('Binary!!!');
END IF;
END;
/