Oracle PL/SQL: SUBSTR (SubString) - The SUBSTR functions allow you to extract a substring from a string.<br /> <br /> Note:<br /> <br

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Oracle PL/SQL: SUBSTR (SubString)

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Snippet Name: SUBSTR (SubString)

Description: The SUBSTR functions allow you to extract a substring from a string.

Note:

If start_position is 0, then substr treats start_position as 1 (ie: the first position in the string).

If start_position is a positive number, then substr starts from the beginning of the string.

If start_position is a negative number, then substr starts from the end of the string and counts backwards.

If length is a negative number, then substr will return a NULL value.

Comment: (none)

Language: PL/SQL
Highlight Mode: PLSQL
Last Modified: March 05th, 2009

SUBSTR( string, start_position, [ LENGTH ] )
 
-- string is the source string.
 
-- start_position is the position for extraction. The first 
-- position in the string is always 1.
 
-- length is optional. It is the number of characters to extract. 
-- If this parameter is omitted, substr will return the entire 
-- string.
 
SUBSTR('This is a test', 6, 2) -- would return 'is'
SUBSTR('This is a test string', 6) -- would return 'is a test string'

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