LEFT and RIGHT Functions
These functions return the specified number of leftmost or rightmost characters from a character string.
The number is based on the number of characters, not bytes, so that multibyte characters are counted as single characters.
LEFT ( string, integer ) RIGHT ( string, integer )
Any character string or any expression that evaluates to a character string.
A positive integer.
LEFT and RIGHT return a VARCHAR string.
The following example returns the leftmost 5 and rightmost 5 characters from event names that have IDs between 1000 and 1005:
select eventid, eventname, left(eventname,5) as left_5, right(eventname,5) as right_5 from event where eventid between 1000 and 1005 order by 1; eventid | eventname | left_5 | right_5 --------+----------------+--------+--------- 1000 | Gypsy | Gypsy | Gypsy 1001 | Chicago | Chica | icago 1002 | The King and I | The K | and I 1003 | Pal Joey | Pal J | Joey 1004 | Grease | Greas | rease 1005 | Chicago | Chica | icago (6 rows)