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38 lines
2.0 KiB
Plaintext
38 lines
2.0 KiB
Plaintext
#
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# Test LAST_VALUE() Window Function
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# Author: Bharath, bharath.bokka@mariadb.com
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#
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-- source ../include/have_columnstore.inc
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--disable_warnings
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DROP DATABASE IF EXISTS mcs127_db;
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--enable_warnings
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CREATE DATABASE mcs127_db;
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USE mcs127_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', 123),('a', 1),('b', 123),('c', 1861),('c', 1991),('d', 10701),('d', 1071),('a', 92);
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SELECT a, b, LAST_VALUE(b) OVER(ORDER BY a) last_value FROM t1;
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SELECT a, b, LAST_VALUE(b) OVER(ORDER BY b DESC) last_value FROM t1;
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SELECT a, b, LAST_VALUE(a) OVER(ORDER BY b) last_value FROM t1;
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SELECT a, b, LAST_VALUE(b) OVER(ORDER BY a DESC) last_value FROM t1;
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SELECT a, b, LAST_VALUE(a) OVER w last_value FROM t1 WINDOW w AS (ORDER BY a DESC);
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SELECT a, b, LAST_VALUE(b) OVER w last_value FROM t1 WINDOW w AS (ORDER BY b);
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SELECT a, b, LAST_VALUE(b) OVER(PARTITION BY b) last_value FROM t1;
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SELECT a, b, LAST_VALUE(b) OVER(PARTITION BY a) last_value FROM t1;
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SELECT a, b, LAST_VALUE(a) OVER(ORDER BY b RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) last_value FROM t1;
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SELECT a, b, LAST_VALUE(b) OVER(ORDER BY b RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) last_value FROM t1;
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SELECT a, b, LAST_VALUE(b) OVER(PARTITION BY b ORDER BY b DESC RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) last_value FROM t1;
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SELECT a, b, LAST_VALUE(a) OVER(PARTITION BY b ORDER BY b DESC RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) last_value FROM t1;
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SELECT a, b, LAST_VALUE(b) OVER(PARTITION BY a ORDER BY b DESC RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) last_value FROM t1;
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--error ER_WRONG_TYPE_FOR_RANGE_FRAME
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SELECT a, b, LAST_VALUE(b) OVER(PARTITION BY a ORDER BY a DESC RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) last_value FROM t1;
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--error ER_WRONG_TYPE_FOR_RANGE_FRAME
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SELECT a, b, LAST_VALUE(b) OVER(PARTITION BY b ORDER BY a DESC RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) last_value FROM t1;
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# Clean UP
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DROP DATABASE mcs127_db;
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