Imitating procedural language using SQL - response (1) by abin

Trying to make the table in more readable format. 
Customer     Entry_Date                           Action       From   To        Flag   Logic
INBUGHUJIK 2/1/2010 10:00:00.000000 WENT-LST Bldg1  Bldg1    N      Flag is N because Action is WENT-LST
INBUGHUJIK 2/4/2010 08:12:00.000000 FACT-OUT Bldg1  Bldg1     N      Flag is N because From = To
INBUGHUJIK 2/12/2010 12:13:00.000000 FACT-IN  Bldg2  Bldg3     N      Flag is N because previous record has From = To
INBUGHUJIK 2/13/2010 11:18:00.000000 COME-FST Bldg2  Bldg2   N       Flag is N because previous record has From = To
INBUGHUJIK 2/25/2010 08:51:00.000000 WENT-LST Bldg2  Bldg2   N      Flag is N because Action is WENT-LST
INBUGHUJIK 2/26/2010 18:06:00.000000 FACT-OUT Bldg2  Bldg3    Y      Flag is Y because previous record has Action as WENT-LST and From <> To
INBUGHUJIK 4/19/2010 10:01:00.000000 FACT-OUT Bldg2  Bldg4    Y      Flag is Y because one of previous record has Action as WENT-LST and From <> To and previous record has flag   Y
INBUGHUJIK 4/21/2010 22:56:00.000000 FACT-IN  Bldg3  Bldg3      N        Flag is N because previous record has From = To