IF(0,"ERROR","this")	IF(1,"is","ERROR")	IF(NULL,"ERROR","a")	IF(1,2,3)|0	IF(1,2.0,3.0)+0
this	is	a	2	2.0
s
a
A
a
aa
AA
aaa
BBB
s
a
A
a
aa
AA
aaa
BBB
s
A
AA
BBB
a
a
aa
aaa
s
A
AA
a
a
aa
aaa
sum(if(num is null,0.00,num))
144.54
min(if(y -x > 5,y,NULL))	max(if(y - x > 5,y,NULL))
16	6