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CREATE TABLE t1 (a VARCHAR(8), INDEX(a)) ENGINE=TokuDB;
INSERT INTO t1 VALUES ('foo'),('bar');
CREATE TABLE t2 AS SELECT 'qux' IN (SELECT a FROM t1) AS f1;
DROP TABLE t1, t2;
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1),(2);
CREATE TABLE t2 (b INT);
INSERT INTO t2 VALUES (3),(4);
CREATE TABLE t3 (c VARCHAR(3), INDEX(c)) ENGINE=TokuDB;
INSERT INTO t3 VALUES ('foo'),('bar');
EXPLAIN SELECT * FROM t1 WHERE a IN (SELECT b FROM t2) OR 'qux' IN (SELECT c FROM t3);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
3 SUBQUERY t3 index_subquery c c 6 const 0 Using index; Using where
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
DROP TABLE t1, t2, t3;
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