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https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
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b53c231ca6
This patch improves handling of NULLs in textual fields in ColumnStore. Previously empty strings were considered NULLs and it could be a problem if data scheme allows for empty strings. It was also one of major reasons of behavior difference between ColumnStore and other engines in MariaDB family. Also, this patch fixes some other bugs and incorrect behavior, for example, incorrect comparison for "column <= ''" which evaluates to constant True for all purposes before this patch.
78 lines
2.8 KiB
Plaintext
78 lines
2.8 KiB
Plaintext
#
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# Test String Functions
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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 mcs93_db;
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--enable_warnings
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CREATE DATABASE mcs93_db;
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USE mcs93_db;
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CREATE TABLE t1(col1 VARCHAR(40), col2 TEXT)ENGINE=Columnstore;
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INSERT INTO t1 VALUES(NULL, NULL);
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INSERT INTO t1 VALUES('', '');
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INSERT INTO t1 VALUES(' aaa', repeat('z',10));
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INSERT INTO t1 VALUES('klm, nopqrst', 'abcdefghijklmno, pqrsuvwxyz ');
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INSERT INTO t1 VALUES('MariaDB, Columnstore', 'mariadb, COLUMNSTORE');
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SELECT col1 FROM t1;
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UPDATE t1 SET col1 = LTRIM(col1);
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SELECT col1 FROM t1;
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SELECT col2 FROM t1;
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UPDATE t1 SET col2 = RTRIM(col2);
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SELECT col2 FROM t1;
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INSERT INTO t1 VALUES(' Columnstore Engine ', ' COLUMNSTORE ENGINE ');
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SELECT TRIM(TRAILING FROM col1), TRIM(LEADING FROM col1) FROM t1;
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SELECT TRIM(TRAILING FROM col2), TRIM(LEADING FROM col2) FROM t1;
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SELECT * FROM t1;
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UPDATE t1 SET col1 = TRIM(col1);
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UPDATE t1 SET col2 = TRIM(col2);
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SELECT * FROM t1;
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SELECT col1, col2, CONCAT(col1,col2) FROM t1;
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SELECT col1, col2, CONCAT(col1, ' ', col2) FROM t1;
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SELECT col1, col2, CONCAT('Concat', col1, ' ', col2) FROM t1;
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SELECT col1, col2, CONCAT(col2, ' string123# ', col1) FROM t1;
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SELECT col1, col2, CONCAT_WS(',', col2, col1) FROM t1;
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SELECT col1, col2, CONCAT_WS('....', col2, col1) FROM t1;
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SELECT col1, col2, CONCAT_WS(' string123# ', col2, col1) FROM t1;
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SELECT col1, col2, INSTR(col1, 'o') FROM t1;
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SELECT col1, LENGTH(col1), col2, LENGTH(col2) FROM t1;
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SELECT col1, CHAR_LENGTH(col1), col2, CHAR_LENGTH(col2) FROM t1;
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SET @s = CONVERT('Mariadb Coumnstore' USING ucs2);
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SELECT CHAR_LENGTH(@s), LENGTH(@s);
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SELECT col1, LEFT(col1, 1), col2, LEFT(col2, 2) FROM t1;
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SELECT col1, LEFT(col1,100), col2, LEFT(col2, 100) FROM t1;
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SELECT col1, RIGHT(col1, 2), col2, RIGHT(col2, 2) FROM t1;
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SELECT col1, RIGHT(col1, 11), col2, RIGHT(col2, 11) FROM t1;
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SELECT LOWER(col1), LOWER(col2) FROM t1;
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SELECT LCASE(col1), LCASE(col2) FROM t1;
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SELECT UPPER(col1), UPPER(col2) FROM t1;
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SELECT UCASE(col1), UCASE(col2) FROM t1;
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SELECT col1, SUBSTRING(col1, 5), col2, SUBSTRING(col2, 8) FROM t1;
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SELECT col1, SUBSTRING(col1, 5, 4), col2, SUBSTRING(col2, 8, 3) FROM t1;
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SELECT col1, SUBSTRING(col1, -5), col2, SUBSTRING(col2, -8) FROM t1;
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SELECT col1, SUBSTRING(col1, -5, 4), col2, SUBSTRING(col2, -8, 3) FROM t1;
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SELECT col1, SUBSTRING_INDEX(col1, 'o', 2), col2, SUBSTRING_INDEX(col2, 'o', 2) FROM t1;
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SELECT col1, SUBSTRING_INDEX(col1, 'O', 2), col2, SUBSTRING_INDEX(col2, 'O', 2) FROM t1;
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SELECT col1, FIND_IN_SET('mariadb', col1), col2, FIND_IN_SET('mariadb', col2) FROM t1;
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DELETE FROM t1;
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INSERT INTO t1 VALUES('75226.62', '96216681'),('27618', '61971811');
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SELECT col1, FORMAT(col1, 2), FORMAT(col1,10) FROM t1;
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SELECT col2, FORMAT(col2, 2), FORMAT(col2,10) FROM t1;
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# Clean UP
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DROP DATABASE mcs93_db;
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