You've already forked mariadb-columnstore-engine
mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-11-03 17:13:17 +03:00
25 lines
967 B
Plaintext
25 lines
967 B
Plaintext
DROP DATABASE IF EXISTS mcs97_db;
|
|
CREATE DATABASE mcs97_db;
|
|
USE mcs97_db;
|
|
CREATE TABLE t1 (a INT, b CHAR(5))ENGINE=Columnstore;
|
|
INSERT INTO t1 VALUES (NULL, NULL),(1, 'aaa'),(2, 'aaa'),(3, 'ccc'),(4, 'ddd'),(5, 'aaa'),(6, 'ddd'),(7, 'eee');
|
|
SELECT GROUP_CONCAT(a ORDER BY a) FROM t1;
|
|
GROUP_CONCAT(a ORDER BY a)
|
|
1,2,3,4,5,6,7
|
|
SELECT GROUP_CONCAT(a ORDER BY a DESC SEPARATOR ';') FROM t1;
|
|
GROUP_CONCAT(a ORDER BY a DESC SEPARATOR ';')
|
|
7;6;5;4;3;2;1
|
|
SELECT GROUP_CONCAT(a ORDER BY a DESC SEPARATOR ';') FROM t1;
|
|
GROUP_CONCAT(a ORDER BY a DESC SEPARATOR ';')
|
|
7;6;5;4;3;2;1
|
|
SELECT GROUP_CONCAT(b ORDER BY b) FROM t1;
|
|
GROUP_CONCAT(b ORDER BY b)
|
|
aaa,aaa,aaa,ccc,ddd,ddd,eee
|
|
SELECT GROUP_CONCAT(DISTINCT b ORDER BY b ASC SEPARATOR ';') FROM t1;
|
|
GROUP_CONCAT(DISTINCT b ORDER BY b ASC SEPARATOR ';')
|
|
aaa;ccc;ddd;eee
|
|
SELECT GROUP_CONCAT(b ORDER BY b DESC SEPARATOR ';') FROM t1;
|
|
GROUP_CONCAT(b ORDER BY b DESC SEPARATOR ';')
|
|
eee;ddd;ddd;ccc;aaa;aaa;aaa
|
|
DROP DATABASE mcs97_db;
|