mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-05-28 13:01:26 +03:00
62 lines
2.4 KiB
Plaintext
62 lines
2.4 KiB
Plaintext
DROP DATABASE IF EXISTS mcs81_db;
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CREATE DATABASE mcs81_db;
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USE mcs81_db;
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CREATE TABLE t1 (t1_col1 INT, t1_col2 TEXT)ENGINE=Columnstore;
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INSERT INTO t1 VALUES (NULL, '');
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INSERT INTO t1 VALUES (1, repeat('a', 20)),(3, repeat('c', 20)),(5, repeat('a', 20)),(7, repeat('c', 20)),(9, repeat('a', 20));
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SELECT * FROM t1 AS a, t1 AS b WHERE a.t1_col1 = b.t1_col1;
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t1_col1 t1_col2 t1_col1 t1_col2
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1 aaaaaaaaaaaaaaaaaaaa 1 aaaaaaaaaaaaaaaaaaaa
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3 cccccccccccccccccccc 3 cccccccccccccccccccc
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5 aaaaaaaaaaaaaaaaaaaa 5 aaaaaaaaaaaaaaaaaaaa
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7 cccccccccccccccccccc 7 cccccccccccccccccccc
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9 aaaaaaaaaaaaaaaaaaaa 9 aaaaaaaaaaaaaaaaaaaa
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SELECT a.t1_col1,b.t1_col2 FROM t1 AS a, t1 AS b WHERE a.t1_col1 = b.t1_col1;
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t1_col1 t1_col2
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1 aaaaaaaaaaaaaaaaaaaa
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3 cccccccccccccccccccc
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5 aaaaaaaaaaaaaaaaaaaa
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7 cccccccccccccccccccc
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9 aaaaaaaaaaaaaaaaaaaa
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SELECT a.t1_col1 AS a_col1, b.t1_col2 AS b_col2 FROM t1 AS a, t1 AS b WHERE a.t1_col1 = b.t1_col1 ORDER BY a.t1_col1;
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a_col1 b_col2
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1 aaaaaaaaaaaaaaaaaaaa
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3 cccccccccccccccccccc
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5 aaaaaaaaaaaaaaaaaaaa
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7 cccccccccccccccccccc
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9 aaaaaaaaaaaaaaaaaaaa
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SELECT * FROM t1 a JOIN t1 b ON a.t1_col1 = b.t1_col1;
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t1_col1 t1_col2 t1_col1 t1_col2
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1 aaaaaaaaaaaaaaaaaaaa 1 aaaaaaaaaaaaaaaaaaaa
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3 cccccccccccccccccccc 3 cccccccccccccccccccc
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5 aaaaaaaaaaaaaaaaaaaa 5 aaaaaaaaaaaaaaaaaaaa
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7 cccccccccccccccccccc 7 cccccccccccccccccccc
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9 aaaaaaaaaaaaaaaaaaaa 9 aaaaaaaaaaaaaaaaaaaa
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SELECT a.t1_col1,b.t1_col2 FROM t1 a JOIN t1 b ON a.t1_col1 = b.t1_col1;
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t1_col1 t1_col2
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1 aaaaaaaaaaaaaaaaaaaa
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3 cccccccccccccccccccc
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5 aaaaaaaaaaaaaaaaaaaa
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7 cccccccccccccccccccc
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9 aaaaaaaaaaaaaaaaaaaa
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SELECT a.t1_col1 AS a_col1, b.t1_col2 AS b_col2 FROM t1 a JOIN t1 b ON a.t1_col1 = b.t1_col1 ORDER BY b.t1_col1;
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a_col1 b_col2
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1 aaaaaaaaaaaaaaaaaaaa
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3 cccccccccccccccccccc
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5 aaaaaaaaaaaaaaaaaaaa
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7 cccccccccccccccccccc
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9 aaaaaaaaaaaaaaaaaaaa
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SELECT * FROM t1 a INNER JOIN t1 b ON a.t1_col1 = b.t1_col1 AND b.t1_col1 > 5;
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t1_col1 t1_col2 t1_col1 t1_col2
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7 cccccccccccccccccccc 7 cccccccccccccccccccc
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9 aaaaaaaaaaaaaaaaaaaa 9 aaaaaaaaaaaaaaaaaaaa
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SELECT * FROM t1 a LEFT JOIN t1 b ON a.t1_col1 = b.t1_col1 AND a.t1_col2 LIKE '%a%' ORDER BY a.t1_col1;
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t1_col1 t1_col2 t1_col1 t1_col2
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NULL NULL NULL NULL
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1 aaaaaaaaaaaaaaaaaaaa 1 aaaaaaaaaaaaaaaaaaaa
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3 cccccccccccccccccccc NULL NULL
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5 aaaaaaaaaaaaaaaaaaaa 5 aaaaaaaaaaaaaaaaaaaa
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7 cccccccccccccccccccc NULL NULL
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9 aaaaaaaaaaaaaaaaaaaa 9 aaaaaaaaaaaaaaaaaaaa
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DROP DATABASE mcs81_db;
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