select * from t1 where c2=”abc” and c3>1000 andc3<1050;
select * fromt1 where c3>1000 and c3<1005;
select * from t1 where c1=”abc” and c3>1000 andc3<1050;
select * from t1 where c1>”abc” and c1<”abz”and c2>”aaa” and c2<”bbb”;
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