DROP TABLE IF EXISTS t1; DROP TABLE IF EXISTS t2; CREATE TABLE t1 (c1 INT, c2 CHAR(100)); INSERT INTO t1 VALUES (null,null); INSERT INTO t1 VALUES (1,''); INSERT INTO t1 VALUES (2,'abcde'); INSERT INTO t1 VALUES (100,'abcdefghij'); CREATE TABLE t2 (c1 INT); INSERT INTO t2 VALUES (null); INSERT INTO t2 VALUES (2); INSERT INTO t2 VALUES (100); SELECT (SELECT AVG(c1) FROM t1); (SELECT AVG(c1) FROM t1) 34.3333 SELECT (SELECT MIN(c1) FROM t2) FROM t1; (SELECT MIN(c1) FROM t2) 2 2 2 2 SELECT UPPER((SELECT c2 FROM t1 WHERE c1=2)) FROM t2; UPPER((SELECT c2 FROM t1 WHERE c1=2)) ABCDE ABCDE ABCDE SELECT c1 FROM t1 WHERE c1 = (SELECT MAX(c1) FROM t2); c1 100 SELECT c1 FROM t1 AS t WHERE 4 = (SELECT COUNT(*) FROM t1 WHERE t1.c1 = t.c1); c1 DROP TABLE t1; DROP TABLE t2; CREATE TABLE t1 (c1 INT, c2 VARCHAR(100)); INSERT INTO t1 VALUES (null,null); INSERT INTO t1 VALUES (1,''); INSERT INTO t1 VALUES (2,'abcde'); INSERT INTO t1 VALUES (100,'abcdefghij'); CREATE TABLE t2 (c1 INT); INSERT INTO t2 VALUES (null); INSERT INTO t2 VALUES (2); INSERT INTO t2 VALUES (100); SELECT (SELECT AVG(c1) FROM t1); (SELECT AVG(c1) FROM t1) 34.3333 SELECT (SELECT MIN(c1) FROM t2) FROM t1; (SELECT MIN(c1) FROM t2) 2 2 2 2 SELECT UPPER((SELECT c2 FROM t1 WHERE c1=2)) FROM t2; UPPER((SELECT c2 FROM t1 WHERE c1=2)) ABCDE ABCDE ABCDE SELECT c1 FROM t1 WHERE c1 = (SELECT MAX(c1) FROM t2); c1 100 SELECT c1 FROM t1 AS t WHERE 4 = (SELECT COUNT(*) FROM t1 WHERE t1.c1 = t.c1); c1 DROP TABLE t1; DROP TABLE t2; CREATE TABLE t1 (c1 INT, c2 BINARY(100)); INSERT INTO t1 VALUES (null,null); INSERT INTO t1 VALUES (1,''); INSERT INTO t1 VALUES (2,'abcde'); INSERT INTO t1 VALUES (100,'abcdefghij'); CREATE TABLE t2 (c1 INT); INSERT INTO t2 VALUES (null); INSERT INTO t2 VALUES (2); INSERT INTO t2 VALUES (100); SELECT (SELECT AVG(c1) FROM t1); (SELECT AVG(c1) FROM t1) 34.3333 SELECT (SELECT MIN(c1) FROM t2) FROM t1; (SELECT MIN(c1) FROM t2) 2 2 2 2 SELECT UPPER((SELECT c2 FROM t1 WHERE c1=2)) FROM t2; UPPER((SELECT c2 FROM t1 WHERE c1=2)) abcde abcde abcde SELECT c1 FROM t1 WHERE c1 = (SELECT MAX(c1) FROM t2); c1 100 SELECT c1 FROM t1 AS t WHERE 4 = (SELECT COUNT(*) FROM t1 WHERE t1.c1 = t.c1); c1 DROP TABLE t1; DROP TABLE t2; CREATE TABLE t1 (c1 INT, c2 VARBINARY(100)); INSERT INTO t1 VALUES (null,null); INSERT INTO t1 VALUES (1,''); INSERT INTO t1 VALUES (2,'abcde'); INSERT INTO t1 VALUES (100,'abcdefghij'); CREATE TABLE t2 (c1 INT); INSERT INTO t2 VALUES (null); INSERT INTO t2 VALUES (2); INSERT INTO t2 VALUES (100); SELECT (SELECT AVG(c1) FROM t1); (SELECT AVG(c1) FROM t1) 34.3333 SELECT (SELECT MIN(c1) FROM t2) FROM t1; (SELECT MIN(c1) FROM t2) 2 2 2 2 SELECT UPPER((SELECT c2 FROM t1 WHERE c1=2)) FROM t2; UPPER((SELECT c2 FROM t1 WHERE c1=2)) abcde abcde abcde SELECT c1 FROM t1 WHERE c1 = (SELECT MAX(c1) FROM t2); c1 100 SELECT c1 FROM t1 AS t WHERE 4 = (SELECT COUNT(*) FROM t1 WHERE t1.c1 = t.c1); c1 DROP TABLE t1; DROP TABLE t2;