See Other related SQL and PLSQL Functions :
>>> DECODE ,MAX ,NVL ,INSTR ,SUBSTR ,TO_DATE ,TO_CHAR ,TO_TIMESTAMP ,GROUP BY,Extract
TRIM function removes all specified characters from the beginning of a string or from the ending of a string.
Syntax:
trim( [ leading or trailing or both , trim_string , stringToTrim )
leading - This removes the ‘trim_string‘ from the beginning of ‘stringToTrim‘.
trailing -This removes the ‘trim_string‘ from the end of ‘stringToTrim‘.
both - This removes the ‘trim_string‘ from the front and end of ‘stringToTrim‘.
By default if there is no choice give oracle will remove ‘trim_string‘ from the front and end of ‘stringToTrim‘.
Examples:
1. Default Options
SQL> select trim (' abcd ') from dual;
TRIM('ABCD')
abcd
SQL>
2. Option ‘trailing’ Example.
SQL> select trim(trailing 'C' from 'ABC') from dual; TRIM(TRAILING'C'FROM'ABC') AB SQL>
3. Option ‘leading’ Example.
select trim(leading 'A' from 'ABC') from dual; TRIM(LEADING'A'FROM'ABC') BC
4. Option ‘both’ Example
SQL> select trim(both 'A' from 'ABCA') from dual; TRIM(BOTH'A'FROM'ABCA') BC
5. Another example for option ‘both’.
SQL> select trim(both 'A' from 'AAAAABCAAAAAAAAA') from dual; TRIM(BOTH'A'FROM'AAAAABCAAAAAA BC
Other Functions :>>> DECODE ,MAX ,NVL ,INSTR ,SUBSTR ,TO_DATE ,TO_CHAR ,TO_TIMESTAMP ,GROUP BY,Extract
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TRIM, Oracle Trim Function, PLSQL TRIM Function, DECODE, MAX, NVL, INSTR, SUBSTR, TO_DATE, TO_CHAR, TO_TIMESTAMP, GROUP BY