Quick Answer: How can I reverse a string in PL SQL without using reverse function?

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How can I reverse a string without reverse function in SQL?

Reverse String In SQL Server Without REVERSE Function

  1. CREATE function StringReverse(@inputstring varchar(max))
  2. returns varchar(max)
  3. AS.
  4. BEGIN.
  5. DECLARE @i int,
  6. @Result varchar(max)
  7. SET @Result=”
  8. SET @i = 1.

How do I reverse a string in Oracle PL SQL?

PL/SQL Program to Reverse a String

  1. declare.
  2. str1 varchar2(50):=’&str’;
  3. str2 varchar2(50);
  4. len number;
  5. i number;
  6. begin.
  7. len:=length(str1);
  8. for i in reverse 1..len.

How do you reverse a function in PL SQL?

In declare part, we declare variables and between begin and end part, we perform the operations. Given a string, the task is to reverse a string using PL/SQL.
…
Approach:

  1. Find the length of the string.
  2. Then traverse the string in a reverse manner.
  3. Store the characters in another string.
  4. Print the final string.

How do I reverse a string in SQL?

The REVERSE() function accepts a string argument and returns the reverse order of that string. The following shows the syntax of the REVERSE() function. The input_string is a character string expression. Otherwise, you must use CAST to explicitly convert the input string to VARCHAR .

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How do I reverse the order of a name in SQL?

SQL REVERSE() function is used for reversing the string. It accepts a string of characters as an argument and returns the reverse order of the string. The REVERSE is one of the SQL String Functions, which is used to reverse the specified expression. The REVERSE() function reverses a string and returns the result.

How do you reverse a number in Oracle?

Declare num number:=&n; rev number:=0; Begin while(num>0) Loop rev=rev*10+mod(num,10); num=num/10; End loop; Dbms_Output.

What is reverse function in C++?

reverse() is a predefined function in header file algorithm. It is defined as a template in the above mentioned header file. It reverses the order of the elements in the range [first, last) of any container.

What is the reverse function in Python?

Python includes a built-in function that is used to create a reverse iterator: the reversed() function. This iterator works because strings are indexed, so each value in a string can be accessed individually. The reverse iterator is then used to iterate through the elements in a string in reverse order.

Which function is used to reverse a string in Java?

StringBuffer reverse() Method in Java with Examples

lang. StringBuffer. reverse() is an inbuilt method which is used to reverse the characters in the StringBuffer. The method causes this character sequence to be replaced by the reverse of the sequence.

How do you write a for loop in PL SQL?

PL/SQL For Loop Example 2

  1. DECLARE.
  2. VAR1 NUMBER;
  3. BEGIN.
  4. VAR1:=10;
  5. FOR VAR2 IN 1..10.
  6. LOOP.
  7. DBMS_OUTPUT.PUT_LINE (VAR1*VAR2);
  8. END LOOP;

How can I swap two numbers without using third variable in SQL?

Program to swap two numbers without using the third variable

  1. STEP 1: START.
  2. STEP 2: ENTER x, y.
  3. STEP 3: PRINT x, y.
  4. STEP 4: x = x + y.
  5. STEP 5: y= x – y.
  6. STEP 6: x =x – y.
  7. STEP 7: PRINT x, y.
  8. STEP 8: END.
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How do I reverse a string?

Different ways to find the reverse of a string in the C

  1. Reverse a string using the strrev() function.
  2. Reverse a string without using the library function.
  3. Reverse a string using the recursion function.
  4. Reverse a string using for loop.
  5. Reverse a string using while loop.
  6. Reverse a string using pointers.

How do I reverse a column in SQL?

Examples

  1. SELECT FirstName, REVERSE(FirstName) AS Reverse FROM Person.Person WHERE BusinessEntityID < 5 ORDER BY FirstName; GO.
  2. DECLARE @myvar VARCHAR(10); SET @myvar = ‘sdrawkcaB’; SELECT REVERSE(@myvar) AS Reversed ; GO.
  3. SELECT REVERSE(1234) AS Reversed ; GO.
  4. SELECT name, REVERSE(name) FROM sys.databases; GO.

How do you reverse a sentence in SQL Server?

To reverse any statement Word by Word in SQL server we could use the SUBSTRING function which allows us to extract and display the part of a string. Approach : Declared three variables (@Input, @Output, @Length) using the DECLARE statement. Use the WHILE Loop to iterate every character present in the @Input.