--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings
CREATE TABLE t1(c1 CHAR(100) NULL);
INSERT INTO t1 (c1) VALUES('NULL');
INSERT INTO t1 (c1) VALUES('');
INSERT INTO t1 (c1) VALUES('x');
INSERT INTO t1 (c1) VALUES('123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.');
SELECT * FROM t1;
SELECT COUNT(c1) AS total_rows FROM t1;
SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL;
SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL;
DROP TABLE t1;
CREATE TABLE t1(c1 VARCHAR(100) NULL);
INSERT INTO t1 (c1) VALUES('NULL');
INSERT INTO t1 (c1) VALUES('');
INSERT INTO t1 (c1) VALUES('x');
INSERT INTO t1 (c1) VALUES('123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.');
SELECT * FROM t1;
SELECT COUNT(c1) AS total_rows FROM t1;
SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL;
SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL;
DROP TABLE t1;
CREATE TABLE t1(c1 BINARY(100) NULL);
INSERT INTO t1 (c1) VALUES('NULL');
INSERT INTO t1 (c1) VALUES('');
INSERT INTO t1 (c1) VALUES('x');
INSERT INTO t1 (c1) VALUES('123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.');
SELECT * FROM t1;
SELECT COUNT(c1) AS total_rows FROM t1;
SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL;
SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL;
DROP TABLE t1;
CREATE TABLE t1(c1 VARBINARY(100) NULL);
INSERT INTO t1 (c1) VALUES('NULL');
INSERT INTO t1 (c1) VALUES('');
INSERT INTO t1 (c1) VALUES('x');
INSERT INTO t1 (c1) VALUES('123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.');
SELECT * FROM t1;
SELECT COUNT(c1) AS total_rows FROM t1;
SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL;
SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL;
DROP TABLE t1;
CREATE TABLE t1(c1 BLOB(100) NULL);
INSERT INTO t1 (c1) VALUES('NULL');
INSERT INTO t1 (c1) VALUES('');
INSERT INTO t1 (c1) VALUES('x');
INSERT INTO t1 (c1) VALUES('123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.');
SELECT * FROM t1;
SELECT COUNT(c1) AS total_rows FROM t1;
SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL;
SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL;
DROP TABLE t1;
CREATE TABLE t1(c1 TEXT(100) NULL);
INSERT INTO t1 (c1) VALUES('NULL');
INSERT INTO t1 (c1) VALUES('');
INSERT INTO t1 (c1) VALUES('x');
INSERT INTO t1 (c1) VALUES('123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.');
SELECT * FROM t1;
SELECT COUNT(c1) AS total_rows FROM t1;
SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL;
SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL;
DROP TABLE t1;