//IF, IN, By

****************
*IF Qualifier  *
****************

gen d1=1 if rep78==3
summarize if price>6000
gen d2=1 if rep78>3
gen d3=1 if rep78>3 & !missing(rep78)
gen d4=1 if rep78>3 & !missing(rep78, price)
gen d5=1 if rep78==3 & (price<4000 | price>10000)

/*
*******
* OR  *
*******
True + True =   True
True + False =  True
False + True =  True
False + False = False

*******
* And *
*******
True + True =   True
True + False =  False
False + True =  False
False + False = False

*/


****************
*IF Statement  *
****************
if rep78==3 {
gen d6=1
}

if rep78==4 {
gen d7=1
}

summarize price
if `r(N)'==74 {
gen d8=1
}
else {
gen abc=1
}


****************
*IN Statement  *
****************
gen d9=1 in 5
list price in 10
list price in 1/10 
gen d10=1 in f/15
gen d11=1 in 5/15
gen d12=1 in 50/l
gen d13=1 in -5/l
gen d14=1 in -5/-2


****************
* By Sort	   *
****************
bysort foreign: summarize price
by foreign: summarize price