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139 lines
4.1 KiB
139 lines
4.1 KiB
-- Tests of using stored generated column as index and partition column.
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-- Most of the cases are ported from other tests to make sure generated columns behaves the same.
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-- Stored generated columns as indices
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DROP TABLE IF EXISTS person;
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CREATE TABLE person (
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id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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name VARCHAR(255) NOT NULL,
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address_info JSON,
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city VARCHAR(64) AS (JSON_UNQUOTE(JSON_EXTRACT(address_info, '$.city'))) STORED,
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KEY (city)
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);
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EXPLAIN SELECT name, id FROM person WHERE city = 'Beijing';
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DROP TABLE IF EXISTS `sgc`;
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CREATE TABLE `sgc` (
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`j1` JSON DEFAULT NULL,
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`j2` JSON DEFAULT NULL,
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`a` int(11) GENERATED ALWAYS AS (JSON_EXTRACT(`j1`, "$.a")) STORED,
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`b` int(2) GENERATED ALWAYS AS (JSON_CONTAINS(j2, '1')) STORED,
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KEY `idx_a` (`a`),
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KEY `idx_b` (`b`),
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KEY `idx_a_b` (`a`,`b`)
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);
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EXPLAIN SELECT a FROM sgc where a < 3;
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EXPLAIN SELECT a, b FROM sgc where a < 3;
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EXPLAIN SELECT a, b from sgc where b < 3;
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EXPLAIN SELECT a, b from sgc where a < 3 and b < 3;
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DROP TABLE IF EXISTS sgc1,
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sgc2;
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CREATE TABLE `sgc1` (
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`j1` JSON,
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`j2` JSON,
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`a` INT AS (JSON_EXTRACT(j1, "$.a")) STORED,
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`b` VARCHAR(20) AS (JSON_KEYS(j2)) STORED,
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KEY `idx_a` (`a`),
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KEY `idx_b` (`b`),
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KEY `idx_a_b` (`a`, `b`)
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);
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CREATE TABLE `sgc2` (
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`j1` JSON,
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`j2` JSON,
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`a` INT AS (JSON_EXTRACT(j1, "$.a")) STORED,
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`b` VARCHAR(20) AS (JSON_KEYS(j2)) STORED,
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KEY `idx_a` (`a`),
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KEY `idx_b` (`b`),
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KEY `idx_a_b` (`a`, `b`)
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);
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INSERT INTO sgc1(j1, j2)
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VALUES ('{"a": 1}', '{"1": "1"}'),
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('{"a": 1}', '{"1": "1"}'),
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('{"a": 1}', '{"1": "1"}'),
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('{"a": 1}', '{"1": "1"}'),
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('{"a": 1}', '{"1": "1"}');
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INSERT INTO sgc2(j1, j2)
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VALUES ('{"a": 1}', '{"1": "1"}');
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ANALYZE TABLE sgc1, sgc2;
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EXPLAIN SELECT /*+ TIDB_INLJ(sgc1, sgc2) */ * from sgc1 join sgc2 on sgc1.a=sgc2.a;
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EXPLAIN SELECT * from sgc1 join sgc2 on sgc1.a=sgc2.a;
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-- Stored generated columns as partition columns
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DROP TABLE IF EXISTS sgc3;
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CREATE TABLE sgc3 (
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j JSON,
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a INT AS (JSON_EXTRACT(j, "$.a")) STORED
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)
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PARTITION BY RANGE (a) (
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PARTITION p0 VALUES LESS THAN (1),
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PARTITION p1 VALUES LESS THAN (2),
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PARTITION p2 VALUES LESS THAN (3),
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PARTITION p3 VALUES LESS THAN (4),
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PARTITION p4 VALUES LESS THAN (5),
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PARTITION p5 VALUES LESS THAN (6),
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PARTITION max VALUES LESS THAN MAXVALUE);
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EXPLAIN SELECT * FROM sgc3 WHERE a <= 1;
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EXPLAIN SELECT * FROM sgc3 WHERE a < 7;
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-- Virtual generated columns as indices
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DROP TABLE IF EXISTS t1;
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CREATE TABLE t1(a INT, b INT AS (a+1) VIRTUAL, c INT AS (b+1) VIRTUAL, d INT AS (c+1) VIRTUAL, KEY(b), INDEX IDX(c, d));
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INSERT INTO t1 (a) VALUES (0);
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EXPLAIN SELECT b FROM t1 WHERE b=1;
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EXPLAIN SELECT b, c, d FROM t1 WHERE b=1;
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EXPLAIN SELECT * FROM t1 WHERE b=1;
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EXPLAIN SELECT c FROM t1 WHERE c=2 AND d=3;
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DROP TABLE IF EXISTS person;
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CREATE TABLE person (
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id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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name VARCHAR(255) NOT NULL,
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address_info JSON,
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city_no INT AS (JSON_EXTRACT(address_info, '$.city_no')) VIRTUAL,
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KEY(city_no));
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INSERT INTO person (name, address_info) VALUES ("John", CAST('{"city_no": 1}' AS JSON));
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EXPLAIN SELECT name FROM person where city_no=1;
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-- Virtual generated columns in aggregate statement
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-- ISSUE https://github.com/pingcap/tidb/issues/14072
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DROP TABLE IF EXISTS t1;
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CREATE TABLE t1 (a INT,
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b INT GENERATED ALWAYS AS (-a) VIRTUAL,
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c INT GENERATED ALWAYS AS (-a) STORED,
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index (c));
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INSERT INTO t1 (a) VALUES (2), (1), (1), (3), (NULL);
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EXPLAIN SELECT sum(a) FROM t1 GROUP BY b;
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EXPLAIN SELECT sum(a) FROM t1 GROUP BY c;
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EXPLAIN SELECT sum(b) FROM t1 GROUP BY a;
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EXPLAIN SELECT sum(b) FROM t1 GROUP BY c;
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EXPLAIN SELECT sum(c) FROM t1 GROUP BY a;
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EXPLAIN SELECT sum(c) FROM t1 GROUP BY b;
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-- Virtual generated column for point get and batch point get
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DROP TABLE IF EXISTS tu;
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CREATE TABLE tu (a INT, b INT, c INT GENERATED ALWAYS AS (a + b) VIRTUAL, primary key (a), unique key uk(c));
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INSERT INTO tu(a, b) VALUES(1, 2);
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EXPLAIN SELECT * FROM tu WHERE c = 1;
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EXPLAIN SELECT a, c FROM tu WHERE c = 1;
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EXPLAIN SELECT * FROM tu WHERE c in(1, 2, 3);
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EXPLAIN SELECT c, a FROM tu WHERE c in(1, 2, 3);
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