mirror of
https://github.com/MariaDB/server.git
synced 2025-08-26 01:44:06 +03:00
134 lines
2.7 KiB
Plaintext
134 lines
2.7 KiB
Plaintext
DROP TABLE IF EXISTS t6;
|
|
CREATE TABLE t6(c1 TINYINT UNSIGNED NULL);
|
|
INSERT INTO t6 (c1) VALUES(NULL);
|
|
INSERT INTO t6 (c1) VALUES(0);
|
|
INSERT INTO t6 (c1) VALUES(255);
|
|
SELECT * FROM t6;
|
|
c1
|
|
NULL
|
|
0
|
|
255
|
|
SELECT COUNT(c1) AS total_rows FROM t6;
|
|
total_rows
|
|
2
|
|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
|
|
positive_rows
|
|
1
|
|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
|
|
null_rows
|
|
0
|
|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
|
|
not_null_rows
|
|
2
|
|
DROP TABLE t6;
|
|
CREATE TABLE t6(c1 SMALLINT UNSIGNED NULL);
|
|
INSERT INTO t6 (c1) VALUES(NULL);
|
|
INSERT INTO t6 (c1) VALUES(0);
|
|
INSERT INTO t6 (c1) VALUES(255);
|
|
SELECT * FROM t6;
|
|
c1
|
|
NULL
|
|
0
|
|
255
|
|
SELECT COUNT(c1) AS total_rows FROM t6;
|
|
total_rows
|
|
2
|
|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
|
|
positive_rows
|
|
1
|
|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
|
|
null_rows
|
|
0
|
|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
|
|
not_null_rows
|
|
2
|
|
DROP TABLE t6;
|
|
CREATE TABLE t6(c1 MEDIUMINT UNSIGNED NULL);
|
|
INSERT INTO t6 (c1) VALUES(NULL);
|
|
INSERT INTO t6 (c1) VALUES(0);
|
|
INSERT INTO t6 (c1) VALUES(255);
|
|
SELECT * FROM t6;
|
|
c1
|
|
NULL
|
|
0
|
|
255
|
|
SELECT COUNT(c1) AS total_rows FROM t6;
|
|
total_rows
|
|
2
|
|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
|
|
positive_rows
|
|
1
|
|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
|
|
null_rows
|
|
0
|
|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
|
|
not_null_rows
|
|
2
|
|
DROP TABLE t6;
|
|
CREATE TABLE t6(c1 INT UNSIGNED NULL);
|
|
INSERT INTO t6 (c1) VALUES(NULL);
|
|
INSERT INTO t6 (c1) VALUES(0);
|
|
INSERT INTO t6 (c1) VALUES(255);
|
|
SELECT * FROM t6;
|
|
c1
|
|
NULL
|
|
0
|
|
255
|
|
SELECT COUNT(c1) AS total_rows FROM t6;
|
|
total_rows
|
|
2
|
|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
|
|
positive_rows
|
|
1
|
|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
|
|
null_rows
|
|
0
|
|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
|
|
not_null_rows
|
|
2
|
|
DROP TABLE t6;
|
|
CREATE TABLE t6(c1 INTEGER UNSIGNED NULL);
|
|
INSERT INTO t6 (c1) VALUES(NULL);
|
|
INSERT INTO t6 (c1) VALUES(0);
|
|
INSERT INTO t6 (c1) VALUES(255);
|
|
SELECT * FROM t6;
|
|
c1
|
|
NULL
|
|
0
|
|
255
|
|
SELECT COUNT(c1) AS total_rows FROM t6;
|
|
total_rows
|
|
2
|
|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
|
|
positive_rows
|
|
1
|
|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
|
|
null_rows
|
|
0
|
|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
|
|
not_null_rows
|
|
2
|
|
DROP TABLE t6;
|
|
CREATE TABLE t6(c1 BIGINT UNSIGNED NULL);
|
|
INSERT INTO t6 (c1) VALUES(NULL);
|
|
INSERT INTO t6 (c1) VALUES(0);
|
|
INSERT INTO t6 (c1) VALUES(255);
|
|
SELECT * FROM t6;
|
|
c1
|
|
NULL
|
|
0
|
|
255
|
|
SELECT COUNT(c1) AS total_rows FROM t6;
|
|
total_rows
|
|
2
|
|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
|
|
positive_rows
|
|
1
|
|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
|
|
null_rows
|
|
0
|
|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
|
|
not_null_rows
|
|
2
|
|
DROP TABLE t6;
|