[HACKERS] row level locks

[Jenny -]

How do we acquire row level locks in postgresql and is there any feild in 
LOCK or PROCLOCK datastructes (src/include/storage/lock.h) that tells us the 
lock is row-level?
thanks

_________________________________________________________________
Enter for your chance to IM with Bon Jovi, Seal, Bow Wow, or Mary J Blige 
using MSN Messenger http://entertainment.msn.com/imastar

---------------------------(end of broadcast)---------------------------
TIP 9: the planner will ignore your desire to choose an index scan if your
     joining column's datatypes do not match