¿Cómo elimino un carácter específico de una cadena en Oracle?

How do I remove a specific character from a string in Oracle?

In PL/SQL you could write yourself a function using regexp_replace, like this: function deletePrefix(stringName in varchar2) return varchar2 is begin return regexp_replace(stringName, ‘^[a-zA-Z]+_’, ”); end; or just use this in plain sql like: regexp_replace(stringName, ‘^[a-zA-Z]+_’, ”);

For PL/SQL the varchar2 limit is 32767 bytes, not characters. See how I increase a PL/SQL varchar2 variable of the 4000 character size: SQL> set serveroutput on SQL> l 1 declare 2 l_var varchar2(30000); 3 begin 4 l_var := rpad(‘A’, 4000); 5 dbms_output.

The Oracle TRIM function does not trim spaces between words. You can use a regular expression with REGEXP_REPLACE to remove occurrences of more than once space. Or, you can use the REPLACE function to remove all spaces between words – but this would result in a single long word.

First, use LENGTH to find the length of a string. Then, find use SUBSTR to get the entire string except for the LENGTH minus 1. SELECT SUBSTR(your_column, 0, LENGTH(your_column) – 1) FROM your_table; This will remove the last character from your string.

If you want to replace multiple, you can use nested functions, which can get messy. REGEXP_REPLACE uses regular expressions to replace characters….In Oracle SQL, you have three options for replacing special characters:

1. Using the REPLACE function.
2. Using the REGEXP_REPLACE function.
3. Using the TRANSLATE function.

PL/SQL: Syntax of String Declaration To include a single quote in the string text, you will have to use two single quotes. For example, ‘You think it’ ‘s your choice’. For declaring a string variable, we have to specify the datatype and length value which defines the maximum length of the string.

To declare a string variable, use the DECLARE keyword, then type the @variable_name and variable type: char, varchar. To assign a value to a variable, use the keyword SET.

SQL Server TRIM() Function The TRIM() function removes the space character OR other specified characters from the start or end of a string. By default, the TRIM() function removes leading and trailing spaces from a string. Note: Also look at the LTRIM() and RTRIM() functions.

1. 3. If the column is of CHAR(n) datatype and the string you have entered does not have n characters then Oracle will pad the data with space ( CHR(32) ) characters until it has exactly n characters.

The NVL function allows you to replace null values with a default value. If the value in the first parameter is null, the function returns the value in the second parameter. If the first parameter is any value other than null, it is returned unchanged.