You've already forked mariadb-columnstore-engine
mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-11-27 08:21:15 +03:00
23 lines
541 B
Plaintext
23 lines
541 B
Plaintext
DROP DATABASE IF EXISTS mcs191_db;
|
|
CREATE DATABASE mcs191_db;
|
|
USE mcs191_db;
|
|
CREATE TABLE t1 (a INT, b CHAR(5))ENGINE=Columnstore;
|
|
INSERT INTO t1 VALUES (NULL, ''),(1, 'aaa'),(2, 'aaa'),(1, 'ccc'),(4, 'ddd'),(5, 'aaa'),(6, 'ddd'),(7, 'eee');
|
|
SELECT MIN(DISTINCT a) FROM t1;
|
|
MIN(DISTINCT a)
|
|
1
|
|
SELECT MIN(DISTINCT a) FROM t1 GROUP BY b HAVING b = 'aaa';
|
|
MIN(DISTINCT a)
|
|
1
|
|
SELECT b, MIN(DISTINCT a) FROM t1 GROUP BY b ORDER BY b DESC;
|
|
b MIN(DISTINCT a)
|
|
eee 7
|
|
ddd 4
|
|
ccc 1
|
|
aaa 1
|
|
NULL NULL
|
|
SELECT MIN(a) FROM t1;
|
|
MIN(a)
|
|
1
|
|
DROP DATABASE mcs191_db;
|