mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-04-21 19:45:56 +03:00
130 lines
2.6 KiB
Plaintext
130 lines
2.6 KiB
Plaintext
DROP DATABASE IF EXISTS mcs90_db;
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CREATE DATABASE mcs90_db;
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USE mcs90_db;
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CREATE USER IF NOT EXISTS 'cejuser'@'localhost' IDENTIFIED BY 'Vagrant1|0000001';
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GRANT ALL PRIVILEGES ON *.* TO 'cejuser'@'localhost';
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FLUSH PRIVILEGES;
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CREATE TABLE t1 (a INT, b CHAR(5))ENGINE=Columnstore;
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INSERT INTO t1 VALUES (NULL, ''),(1, 'aaa'),(2, 'aaa'),(3, 'ccc'),(4, 'ddd'),(5, 'aaa'),(6, 'ddd'),(7, 'eee');
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SELECT * FROM t1;
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a b
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NULL NULL
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1 aaa
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2 aaa
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3 ccc
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4 ddd
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5 aaa
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6 ddd
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7 eee
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SELECT b, SUM(a) FROM t1 GROUP BY b ORDER BY b;
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b SUM(a)
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NULL NULL
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aaa 8
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ccc 3
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ddd 10
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eee 7
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SELECT SUM(a) FROM t1 WHERE b LIKE '%a%';
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SUM(a)
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8
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SELECT a, AVG(a) FROM t1 GROUP BY a ORDER BY a;
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a AVG(a)
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NULL NULL
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1 1.0000
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2 2.0000
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3 3.0000
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4 4.0000
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5 5.0000
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6 6.0000
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7 7.0000
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SELECT b, AVG(a) FROM t1 WHERE b LIKE '%a%' GROUP BY b;
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b AVG(a)
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aaa 2.6667
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SELECT COUNT(*) FROM t1;
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COUNT(*)
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8
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SELECT b, COUNT(*) FROM t1 GROUP BY b ORDER BY 1;
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b COUNT(*)
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NULL 1
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aaa 3
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ccc 1
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ddd 2
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eee 1
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SELECT t1.b, COUNT(*) FROM t1 JOIN t1 AS t ON t1.a = t.a GROUP BY t1.b ORDER BY 1;
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b COUNT(*)
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aaa 3
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ccc 1
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ddd 2
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eee 1
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SELECT MAX(a) FROM t1;
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MAX(a)
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7
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SELECT MIN(a) FROM t1;
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MIN(a)
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1
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CREATE TABLE t2 (a INT, b CHAR(5))ENGINE=Innodb;
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CREATE TABLE t3 (a INT, b CHAR(5))ENGINE=Myisam;
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INSERT INTO t2 VALUES (NULL, ''),(1, 'eee'),(3, 'ccc'),(5, 'jjj'),(6, ''),(7, 'ccc'),(9, 'eee'),(11, 'jjj');
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INSERT INTO t3 VALUES (NULL, ''),(1, 'eee'),(3, 'ccc'),(5, 'jjj'),(6, ''),(7, 'ccc'),(9, 'eee'),(11, 'jjj');
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SELECT t1.b, COUNT(*) FROM t1 JOIN t2 ON t1.a = t2.a GROUP BY t1.b ORDER BY 1;
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b COUNT(*)
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aaa 2
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ccc 1
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ddd 1
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eee 1
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SELECT t1.b, SUM(t1.a) FROM t1 JOIN t2 ON t1.a = t2.a GROUP BY t1.b ORDER BY 1;
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b SUM(t1.a)
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aaa 6
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ccc 3
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ddd 6
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eee 7
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SELECT t1.b, AVG(t1.a) FROM t1 JOIN t2 ON t1.a = t2.a GROUP BY t1.b ORDER BY 1;
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b AVG(t1.a)
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aaa 3.0000
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ccc 3.0000
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ddd 6.0000
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eee 7.0000
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SELECT t1.b, MAX(t1.a) FROM t1 JOIN t2 ON t1.a = t2.a GROUP BY t1.b ORDER BY 1;
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b MAX(t1.a)
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aaa 5
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ccc 3
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ddd 6
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eee 7
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SELECT t1.b, MIN(t1.a) FROM t1 JOIN t2 ON t1.a = t2.a GROUP BY t1.b ORDER BY 1;
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b MIN(t1.a)
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aaa 1
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ccc 3
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ddd 6
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eee 7
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SELECT t1.b, COUNT(*) FROM t1 JOIN t3 ON t1.a = t3.a GROUP BY t1.b ORDER BY 1;
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b COUNT(*)
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aaa 2
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ccc 1
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ddd 1
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eee 1
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SELECT t1.b, SUM(t1.a) FROM t1 JOIN t3 ON t1.a = t3.a GROUP BY t1.b ORDER BY 1;
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b SUM(t1.a)
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aaa 6
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ccc 3
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ddd 6
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eee 7
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SELECT t1.b, AVG(t1.a) FROM t1 JOIN t3 ON t1.a = t3.a GROUP BY t1.b ORDER BY 1;
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b AVG(t1.a)
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aaa 3.0000
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ccc 3.0000
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ddd 6.0000
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eee 7.0000
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SELECT t1.b, MAX(t1.a) FROM t1 JOIN t3 ON t1.a = t3.a GROUP BY t1.b ORDER BY 1;
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b MAX(t1.a)
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aaa 5
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ccc 3
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ddd 6
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eee 7
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SELECT t1.b, MIN(t1.a) FROM t1 JOIN t3 ON t1.a = t3.a GROUP BY t1.b ORDER BY 1;
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b MIN(t1.a)
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aaa 1
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ccc 3
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ddd 6
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eee 7
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DROP USER 'cejuser'@'localhost';
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DROP DATABASE mcs90_db;
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