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create table t1 (f1 int not null, f2 int, f3 int, primary key (f1,f2), key(f2,f3)) engine=innodb;
create view v1 as select * from t1 where f2 = 1;
select distinct f1 from v1;
f1
drop view v1;
drop table t1;
CREATE TABLE t1 (a INT NOT NULL, UNIQUE(a)) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1),(2);
DELETE FROM t1 ORDER BY a LIMIT 1;
SELECT * FROM t1;
a
2
DROP TABLE t1;
CREATE TABLE t1 (a CHAR KEY,b BLOB) ENGINE=InnoDB;
DELETE FROM t1 ORDER BY a LIMIT 1;
DROP TABLE t1;
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