mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-04-18 21:44:02 +03:00
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.
82 lines
1.8 KiB
Plaintext
82 lines
1.8 KiB
Plaintext
DROP DATABASE IF EXISTS json_contains_db;
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CREATE DATABASE json_contains_db;
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USE json_contains_db;
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# ----------------------------------------------------------------------
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# Test of JSON_CONTAINS function.
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# ----------------------------------------------------------------------
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CREATE TABLE t1(j LONGTEXT, v LONGTEXT, p LONGTEXT) ENGINE = columnstore;
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INSERT INTO
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t1
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VALUES
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('{"k1":123, "k2":345}', '123', '$.k1'),
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('', '', '$'),
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('null', 'null', '$'),
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('"10"', '"10"', '$'),
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('"10"', '10', '$'),
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('10.1', '10', '$'),
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('10.0', '10', '$');
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SELECT
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j AS json,
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v AS value,
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p AS path,
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JSON_CONTAINS(j, v, p) AS result
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FROM
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t1;
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json value path result
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{"k1":123, "k2":345} 123 $.k1 1
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$ NULL
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null null $ 1
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"10" "10" $ 1
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"10" 10 $ 0
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10.1 10 $ 0
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10.0 10 $ 1
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CREATE TABLE t2(j LONGTEXT, v LONGTEXT) ENGINE = columnstore;
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INSERT INTO
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t2
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VALUES
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('"you"', '"you"'),
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('"youth"', '"you"'),
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('[1]', '1'),
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('[2, 1]', '1'),
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('[2, [2, 3], 1]', '1'),
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('[4, [2, 3], 1]', '2'),
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('[2, 1]', '[1, 2]'),
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('[2, 1]', '[1, 0, 2]'),
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('[2, 0, 3, 1]', '[1, 2]'),
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('{"b":[1,2], "a":1}', '{"a":1, "b":2}'),
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('{"a":1}', '{}'),
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('[1, {"a":1}]', '{}'),
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('[1, {"a":1}]', '{"a":1}'),
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('[{"abc":"def", "def":"abc"}]', '["foo","bar"]'),
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(
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'[{"abc":"def", "def":"abc"}, "bar"]',
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'["bar", {}]'
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),
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('[{"a":"b"},{"c":"d"}]', '{"c":"d"}');
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SELECT
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j AS json,
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v AS value,
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JSON_CONTAINS(j, v) AS result
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FROM
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t2;
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json value result
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"you" "you" 1
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"youth" "you" 0
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[1] 1 1
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[2, 1] 1 1
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[2, [2, 3], 1] 1 1
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[4, [2, 3], 1] 2 1
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[2, 1] [1, 2] 1
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[2, 1] [1, 0, 2] 0
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[2, 0, 3, 1] [1, 2] 1
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{"b":[1,2], "a":1} {"a":1, "b":2} 1
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{"a":1} {} 1
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[1, {"a":1}] {} 1
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[1, {"a":1}] {"a":1} 1
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[{"abc":"def", "def":"abc"}] ["foo","bar"] 0
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[{"abc":"def", "def":"abc"}, "bar"] ["bar", {}] 1
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[{"a":"b"},{"c":"d"}] {"c":"d"} 1
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DROP TABLE t2;
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DROP TABLE t1;
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DROP DATABASE json_contains_db;
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