DROP TABLE IF EXISTS t2; CREATE TABLE t2(c1 CHAR(100) NOT NULL); INSERT INTO t2 (c1) VALUES(''); INSERT INTO t2 (c1) VALUES('x'); INSERT INTO t2 (c1) VALUES('123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.'); SELECT * FROM t2; c1 x 123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789. SELECT COUNT(c1) AS total_rows FROM t2; total_rows 3 SELECT COUNT(c1) AS null_rows FROM t2 WHERE c1 IS NULL; null_rows 0 SELECT COUNT(c1) AS not_null_rows FROM t2 WHERE c1 IS NOT NULL; not_null_rows 3 DROP TABLE t2; CREATE TABLE t2(c1 VARCHAR(100) NOT NULL); INSERT INTO t2 (c1) VALUES(''); INSERT INTO t2 (c1) VALUES('x'); INSERT INTO t2 (c1) VALUES('123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.'); SELECT * FROM t2; c1 x 123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789. SELECT COUNT(c1) AS total_rows FROM t2; total_rows 3 SELECT COUNT(c1) AS null_rows FROM t2 WHERE c1 IS NULL; null_rows 0 SELECT COUNT(c1) AS not_null_rows FROM t2 WHERE c1 IS NOT NULL; not_null_rows 3 DROP TABLE t2; CREATE TABLE t2(c1 BINARY(100) NOT NULL); INSERT INTO t2 (c1) VALUES(''); INSERT INTO t2 (c1) VALUES('x'); INSERT INTO t2 (c1) VALUES('123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.'); SELECT * FROM t2; c1 x 123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789. SELECT COUNT(c1) AS total_rows FROM t2; total_rows 3 SELECT COUNT(c1) AS null_rows FROM t2 WHERE c1 IS NULL; null_rows 0 SELECT COUNT(c1) AS not_null_rows FROM t2 WHERE c1 IS NOT NULL; not_null_rows 3 DROP TABLE t2; CREATE TABLE t2(c1 VARBINARY(100) NOT NULL); INSERT INTO t2 (c1) VALUES(''); INSERT INTO t2 (c1) VALUES('x'); INSERT INTO t2 (c1) VALUES('123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.'); SELECT * FROM t2; c1 x 123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789. SELECT COUNT(c1) AS total_rows FROM t2; total_rows 3 SELECT COUNT(c1) AS null_rows FROM t2 WHERE c1 IS NULL; null_rows 0 SELECT COUNT(c1) AS not_null_rows FROM t2 WHERE c1 IS NOT NULL; not_null_rows 3 DROP TABLE t2; CREATE TABLE t2(c1 BLOB(100) NOT NULL); INSERT INTO t2 (c1) VALUES(''); INSERT INTO t2 (c1) VALUES('x'); INSERT INTO t2 (c1) VALUES('123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.'); SELECT * FROM t2; c1 x 123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789. SELECT COUNT(c1) AS total_rows FROM t2; total_rows 3 SELECT COUNT(c1) AS null_rows FROM t2 WHERE c1 IS NULL; null_rows 0 SELECT COUNT(c1) AS not_null_rows FROM t2 WHERE c1 IS NOT NULL; not_null_rows 3 DROP TABLE t2; CREATE TABLE t2(c1 TEXT(100) NOT NULL); INSERT INTO t2 (c1) VALUES(''); INSERT INTO t2 (c1) VALUES('x'); INSERT INTO t2 (c1) VALUES('123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.'); SELECT * FROM t2; c1 x 123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789. SELECT COUNT(c1) AS total_rows FROM t2; total_rows 3 SELECT COUNT(c1) AS null_rows FROM t2 WHERE c1 IS NULL; null_rows 0 SELECT COUNT(c1) AS not_null_rows FROM t2 WHERE c1 IS NOT NULL; not_null_rows 3 DROP TABLE t2;