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create table t1 (id_1 int, c1 text); create table t2 (c2 text, age int); insert into t1 values (1, '326789'), (2, 'sql'), (3, '31007'), (4, '732156'), (5, '10097'); insert into t2 values ('326789', 12), ('sql', 23), ('031007', 34), ('732156',45 ), ('010097', 46); select * from t1 join t2 on t1.c1 = ltrim(t2.c2, '0')

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