mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-05-28 13:01:26 +03:00
91 lines
4.2 KiB
Plaintext
91 lines
4.2 KiB
Plaintext
DROP DATABASE IF EXISTS mcs78_db;
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CREATE DATABASE mcs78_db;
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USE mcs78_db;
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CREATE TABLE t1
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(
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t1_tinyint TINYINT DEFAULT 0,
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t1_int INT DEFAULT NULL,
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t1_bigint BIGINT,
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t1_decimal DECIMAL(5,2),
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t1_text TEXT,
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t1_char CHAR(5),
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t1_varchar VARCHAR(255) DEFAULT 'hello world!',
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t1_datetime DATETIME
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)ENGINE=Columnstore;
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INSERT INTO t1 VALUES(NULL, NULL, NULL, NULL, '', '', '', NULL);
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INSERT INTO t1 VALUES(1, 11, 987654321, 122.32, repeat('z', 20), 'aaa', repeat('a', 20), '1111-11-09 11:11:11');
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INSERT INTO t1 VALUES(0, 12, 887654321, 222.32, repeat('y', 20), 'aaa', repeat('b', 20), '1111-11-11 11:11:12');
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INSERT INTO t1 VALUES(1, -12, -987654321, -122.32, repeat('z', 20), 'bbb', repeat('a', 20), '1111-11-10 11:11:10');
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INSERT INTO t1 VALUES(0, -11, -887654321, -222.32, repeat('x', 20), 'bbb', repeat('b', 20), '1111-11-1 11:11:19');
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SELECT * FROM t1;
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t1_tinyint t1_int t1_bigint t1_decimal t1_text t1_char t1_varchar t1_datetime
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NULL NULL NULL NULL NULL NULL NULL NULL
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1 11 987654321 122.32 zzzzzzzzzzzzzzzzzzzz aaa aaaaaaaaaaaaaaaaaaaa 1111-11-09 11:11:11
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0 12 887654321 222.32 yyyyyyyyyyyyyyyyyyyy aaa bbbbbbbbbbbbbbbbbbbb 1111-11-11 11:11:12
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1 -12 -987654321 -122.32 zzzzzzzzzzzzzzzzzzzz bbb aaaaaaaaaaaaaaaaaaaa 1111-11-10 11:11:10
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0 -11 -887654321 -222.32 xxxxxxxxxxxxxxxxxxxx bbb bbbbbbbbbbbbbbbbbbbb 1111-11-01 11:11:19
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SELECT COUNT(*) AS 'Total Rows' FROM t1;
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Total Rows
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5
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SELECT SUM(t1_int*t1_int) AS 'Sum of Squares of Integer values' FROM t1;
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Sum of Squares of Integer values
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530
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SELECT t1_int 'Serial no', t1_text 'Name of the Book', t1_datetime 'Publish Date' FROM t1;
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Serial no Name of the Book Publish Date
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NULL NULL NULL
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11 zzzzzzzzzzzzzzzzzzzz 1111-11-09 11:11:11
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12 yyyyyyyyyyyyyyyyyyyy 1111-11-11 11:11:12
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-12 zzzzzzzzzzzzzzzzzzzz 1111-11-10 11:11:10
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-11 xxxxxxxxxxxxxxxxxxxx 1111-11-01 11:11:19
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SELECT CONCAT(t1_char, t1_text, t1_varchar) 'Concatinating String Columns' FROM t1;
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Concatinating String Columns
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NULL
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aaazzzzzzzzzzzzzzzzzzzzaaaaaaaaaaaaaaaaaaaa
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aaayyyyyyyyyyyyyyyyyyyybbbbbbbbbbbbbbbbbbbb
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bbbzzzzzzzzzzzzzzzzzzzzaaaaaaaaaaaaaaaaaaaa
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bbbxxxxxxxxxxxxxxxxxxxxbbbbbbbbbbbbbbbbbbbb
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SELECT t1_tinyint AS 'Boolean value' FROM t1;
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Boolean value
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NULL
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1
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0
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1
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0
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SELECT t1_tinyint 'Tinyint', t1_bigint 'Big Int', t1_decimal 'Decimal', t1_text AS 'Text', t1_varchar AS 'Varchar', t1_datetime AS 'Date' FROM t1 WHERE 'Decimal' >= -300 ORDER BY 'Date';
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Tinyint Big Int Decimal Text Varchar Date
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NULL NULL NULL NULL NULL NULL
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1 987654321 122.32 zzzzzzzzzzzzzzzzzzzz aaaaaaaaaaaaaaaaaaaa 1111-11-09 11:11:11
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0 887654321 222.32 yyyyyyyyyyyyyyyyyyyy bbbbbbbbbbbbbbbbbbbb 1111-11-11 11:11:12
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1 -987654321 -122.32 zzzzzzzzzzzzzzzzzzzz aaaaaaaaaaaaaaaaaaaa 1111-11-10 11:11:10
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0 -887654321 -222.32 xxxxxxxxxxxxxxxxxxxx bbbbbbbbbbbbbbbbbbbb 1111-11-01 11:11:19
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Warnings:
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Warning 1292 Truncated incorrect DOUBLE value: 'Decimal'
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SELECT COUNT(*) AS 'Total rows' FROM t1 AS table1 , t1 AS table2 WHERE table1.t1_int = table2.t1_int;
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Total rows
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4
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SELECT table1.t1_tinyint, table2.t1_int FROM t1 AS table1 JOIN t1 AS table2 ON table1.t1_int = table2.t1_int;
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t1_tinyint t1_int
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1 11
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0 12
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1 -12
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0 -11
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CREATE TABLE t2(col1 INT, col2 TEXT)ENGINE=Columnstore;
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INSERT INTO t2 VALUES(1, repeat('s',20)),(2, repeat('o',20)),(3, 'sss'),(4, 'ooo');
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CREATE TABLE t3(col1 INT, col2 DATETIME)ENGINE=Columnstore;
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INSERT INTO t3 VALUES(1, '2020-2-2'),(2, '2020-3-3');
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SELECT table1.col1, table1.col2 AS 'Text from table1', table2.col2 AS 'Date from table2' FROM t2 AS table1 JOIN t3 AS table2 ON table1.col1 = table2.col1;
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col1 Text from table1 Date from table2
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1 ssssssssssssssssssss 2020-02-02 00:00:00
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2 oooooooooooooooooooo 2020-03-03 00:00:00
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SELECT table1.col1, table1.col2 AS 'Text from table1', table2.col2 AS 'Date from table2' FROM t2 AS table1 LEFT JOIN t3 AS table2 ON table1.col1 = table2.col1;
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col1 Text from table1 Date from table2
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1 ssssssssssssssssssss 2020-02-02 00:00:00
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2 oooooooooooooooooooo 2020-03-03 00:00:00
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3 sss NULL
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4 ooo NULL
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SELECT table1.col1, table1.col2 AS 'Text from table1', table2.col2 AS 'Date from table2' FROM t2 AS table1 RIGHT JOIN t3 AS table2 ON table1.col1 = table2.col1;
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col1 Text from table1 Date from table2
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1 ssssssssssssssssssss 2020-02-02 00:00:00
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2 oooooooooooooooooooo 2020-03-03 00:00:00
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DROP DATABASE mcs78_db;
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