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139 lines
2.3 KiB
Plaintext
139 lines
2.3 KiB
Plaintext
DROP DATABASE IF EXISTS mcs141_db;
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CREATE DATABASE mcs141_db;
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USE mcs141_db;
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CREATE TABLE t1 (a CHAR(1), b INT)ENGINE=Columnstore;
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INSERT INTO t1 VALUES ('', NULL),('a', 12),('a', 13),('b', 14),('b', 15),('b', 16),('b', 17),('b', 18),('a', 19);
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SELECT a, b, STD(b) OVER(PARTITION BY a) pd FROM t1;
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a b pd
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NULL NULL NULL
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a 19 3.0912
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a 13 3.0912
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a 12 3.0912
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b 17 1.4142
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b 18 1.4142
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b 14 1.4142
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b 15 1.4142
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b 16 1.4142
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SELECT a, b, STD(b) OVER(PARTITION BY a DESC) pd FROM t1;
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a b pd
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NULL NULL NULL
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a 19 3.0912
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a 13 3.0912
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a 12 3.0912
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b 17 1.4142
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b 18 1.4142
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b 14 1.4142
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b 15 1.4142
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b 16 1.4142
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SELECT a, b, STD(b) OVER(PARTITION BY b DESC) pd FROM t1;
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a b pd
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NULL NULL NULL
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a 12 0.0000
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a 13 0.0000
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b 14 0.0000
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b 15 0.0000
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b 16 0.0000
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b 17 0.0000
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b 18 0.0000
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a 19 0.0000
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SELECT a, b, STD(b) OVER(PARTITION BY b) pd FROM t1;
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a b pd
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NULL NULL NULL
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a 12 0.0000
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a 13 0.0000
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b 14 0.0000
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b 15 0.0000
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b 16 0.0000
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b 17 0.0000
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b 18 0.0000
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a 19 0.0000
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SELECT a, b, STD(b) OVER(ORDER BY a) pd FROM t1;
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a b pd
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NULL NULL NULL
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a 19 3.0912
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a 13 3.0912
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a 12 3.0912
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b 17 2.2913
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b 18 2.2913
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b 14 2.2913
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b 15 2.2913
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b 16 2.2913
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SELECT a, b, STD(b) OVER(ORDER BY b) pd FROM t1;
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a b pd
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NULL NULL NULL
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a 12 0.0000
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a 13 0.5000
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b 14 0.8165
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b 15 1.1180
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b 16 1.4142
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b 17 1.7078
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b 18 2.0000
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a 19 2.2913
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SELECT a, b, STD(b) OVER(ORDER BY a DESC) pd FROM t1;
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a b pd
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b 16 1.4142
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b 15 1.4142
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b 18 1.4142
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b 17 1.4142
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b 14 1.4142
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a 19 2.2913
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a 12 2.2913
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a 13 2.2913
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NULL NULL 2.2913
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SELECT a, b, STD(b) OVER(ORDER BY b DESC) pd FROM t1;
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a b pd
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a 19 0.0000
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b 18 0.5000
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b 17 0.8165
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b 16 1.1180
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b 15 1.4142
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b 14 1.7078
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a 13 2.0000
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a 12 2.2913
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NULL NULL 2.2913
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SELECT a, b, STD(b) OVER(PARTITION BY a ORDER BY b) pd FROM t1;
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a b pd
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NULL NULL NULL
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a 12 0.0000
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a 13 0.5000
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a 19 3.0912
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b 14 0.0000
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b 15 0.5000
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b 16 0.8165
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b 17 1.1180
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b 18 1.4142
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SELECT a, b, STD(b) OVER(PARTITION BY b ORDER BY a) pd FROM t1;
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a b pd
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NULL NULL NULL
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a 12 0.0000
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a 13 0.0000
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b 14 0.0000
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b 15 0.0000
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b 16 0.0000
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b 17 0.0000
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b 18 0.0000
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a 19 0.0000
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SELECT a, b, STD(b) OVER(PARTITION BY b ORDER BY b DESC) pd FROM t1;
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a b pd
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NULL NULL NULL
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a 12 0.0000
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a 13 0.0000
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b 14 0.0000
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b 15 0.0000
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b 16 0.0000
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b 17 0.0000
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b 18 0.0000
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a 19 0.0000
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SELECT a, b, STD(b) OVER(PARTITION BY a ORDER BY a DESC) pd FROM t1;
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a b pd
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NULL NULL NULL
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a 19 3.0912
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a 13 3.0912
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a 12 3.0912
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b 17 1.4142
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b 18 1.4142
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b 14 1.4142
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b 15 1.4142
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b 16 1.4142
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DROP DATABASE mcs141_db;
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