Details
Critical Description
set hivevar:A_VALUE_1=A ;
set hivevar:A_VALUE_3=C ;
explain select "${A_VALUE_1}","${A_VALUE_2}","${A_VALUE_3}" from foobar ;
set hivevar:A_VALUE_2=B ;
explain select "${A_VALUE_1}","${A_VALUE_2}","${A_VALUE_3}" from foobar ;
In the first query , the variable A_VALUE_3 is not subsituted , because the A_VALUE_2 is not defined !