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https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-04-18 21:44:02 +03:00
64f1d541d0
feat(charset)!: utf8 is a new charset default and utf8_general_ci is a new collation default in the engine configuration file shipped --------- Co-authored-by: Leonid Fedorov <leonid.fedorov@mariadb.com> Co-authored-by: mariadb-DanielLee <daniel.lee@mariadb.com>
43 lines
1.2 KiB
Plaintext
43 lines
1.2 KiB
Plaintext
DROP DATABASE IF EXISTS mcs173_db;
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CREATE DATABASE mcs173_db;
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USE mcs173_db;
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SET default_storage_engine=Columnstore;
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CREATE TABLE t1 (a CHAR(1), b INT, c DATETIME, d DOUBLE);
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INSERT INTO t1 VALUES (NULL, NULL, '0-0-0', NULL),('a', 12, '1212-12-12', 1.19691E+100),('b', 13, '1313-3-13 13:13:13', 2.1961E+18),('c', 14, '1414-4-14', 0.16191),('d', 15, '2015-5-15 15:15:15', 1.971917);
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SHOW CREATE TABLE t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` char(1) DEFAULT NULL,
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`b` int(11) DEFAULT NULL,
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`c` datetime DEFAULT NULL,
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`d` double DEFAULT NULL
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) ENGINE=Columnstore DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_general_ci
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SELECT COALESCE(NULL, NULL, NULL, 'mariadb', NULL, 'columnstore');
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COALESCE(NULL, NULL, NULL, 'mariadb', NULL, 'columnstore')
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mariadb
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SELECT COALESCE(NULL, 1, 2, 'columnstore');
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COALESCE(NULL, 1, 2, 'columnstore')
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1
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SELECT a, COALESCE(a, 'na') FROM t1;
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a COALESCE(a, 'na')
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NULL na
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a a
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b b
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c c
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d d
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SELECT b, COALESCE(b, 'null value') FROM t1;
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b COALESCE(b, 'null value')
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NULL null value
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12 12
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13 13
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14 14
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15 15
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SELECT d, COALESCE(d, 'null value') FROM t1;
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d COALESCE(d, 'null value')
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NULL null value
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1.19691e100 1.19691e100
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2.1961e18 2.1961e18
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0.16191 0.16191
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1.971917 1.971917
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DROP DATABASE mcs173_db;
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