CREATE TABLE VARCHAR_TBL(f1 varchar(4));

INSERT INTO VARCHAR_TBL (f1) VALUES ('a');
INSERT INTO VARCHAR_TBL (f1) VALUES ('ab');
INSERT INTO VARCHAR_TBL (f1) VALUES ('abcd');
INSERT INTO VARCHAR_TBL (f1) VALUES ('abcd');

CREATE TABLE varchar_tbl(f1 varchar(4));
INSERT INTO varchar_tbl
SELECT * from VARCHAR_TBL;