ddl: support range multi-columns

[crazycs520]

What problem does this PR solve?

What is changed and how it works?

This PR uses to support range multi-columns partition, both in DDL and DML.

Here is an example:

CREATE TABLE t(
    id INT,
    hired DATE,
    age INT,
	unique index idx (id,hired)
)
PARTITION BY RANGE COLUMNS (id,hired)  (
    PARTITION p0 VALUES LESS THAN (100,'1970-01-01'),
    PARTITION p1 VALUES LESS THAN (200,'1980-01-01'),
    PARTITION p2 VALUES LESS THAN (200,'1990-01-01'),
    PARTITION p3 VALUES LESS THAN (500,'2000-01-01'));

insert into t values  (1, '1960-01-01',20),(101, '1960-01-01',20),(101, '1980-01-02',20),(250, '1960-01-01',20);
select * from t;
select * from t partition (p0);
alter table t drop partition p1;
insert into t values  (500, '1960-01-01',20);
select * from t;
alter table t add partition (partition p4 values less than (600,'2000-01-01'));
insert into t values  (500, '1960-01-01',20);

test> CREATE TABLE t(
   ->     id INT,
   ->         hired DATE,
   ->             age INT,
   ->                 unique index idx (id,hired)
   ->                 )
   ->                 PARTITION BY RANGE COLUMNS (id,hired)  (
   ->                     PARTITION p0 VALUES LESS THAN (100,'1970-01-01'),
   ->                         PARTITION p1 VALUES LESS THAN (200,'1980-01-01'),
   ->                             PARTITION p2 VALUES LESS THAN (200,'1990-01-01'),
   ->                                 PARTITION p3 VALUES LESS THAN (500,'2000-01-01'));
Query OK, 0 rows affected
Time: 0.008s
test> insert into t values  (1, '1960-01-01',20),(101, '1960-01-01',20),(101, '1980-01-02',20),(250, '1960-01-01',20);
Query OK, 4 rows affected
Time: 0.004s
test> select * from t;
+-----+------------+-----+
| id  | hired      | age |
+-----+------------+-----+
| 101 | 1960-01-01 | 20  |
| 250 | 1960-01-01 | 20  |
| 101 | 1980-01-02 | 20  |
| 1   | 1960-01-01 | 20  |
+-----+------------+-----+
4 rows in set
Time: 0.011s
test> select * from t partition (p0);
+----+------------+-----+
| id | hired      | age |
+----+------------+-----+
| 1  | 1960-01-01 | 20  |
+----+------------+-----+
1 row in set
Time: 0.011s
test> alter table t drop partition p1;
Query OK, 0 rows affected
Time: 0.006s
test> insert into t values  (500, '1960-01-01',20);
(1526, 'Table has no partition for value from column_list')
test> select * from t;
+-----+------------+-----+
| id  | hired      | age |
+-----+------------+-----+
| 1   | 1960-01-01 | 20  |
| 250 | 1960-01-01 | 20  |
| 101 | 1980-01-02 | 20  |
+-----+------------+-----+
3 rows in set
Time: 0.011s
test> alter table t add partition (partition p4 values less than (600,'2000-01-01'));
Query OK, 0 rows affected
Time: 0.006s
test> insert into t values  (500, '1960-01-01',20);
Query OK, 1 row affected
Time: 0.001s
test> select * from t;
+-----+------------+-----+
| id  | hired      | age |
+-----+------------+-----+
| 250 | 1960-01-01 | 20  |
| 500 | 1960-01-01 | 20  |
| 1   | 1960-01-01 | 20  |
| 101 | 1980-01-02 | 20  |
+-----+------------+-----+
4 rows in set
Time: 0.011s
test> show create table t;
+-------+-------------------------------------------------------------+
| Table | Create Table                                                |
+-------+-------------------------------------------------------------+
| t     | CREATE TABLE `t` (                                          |
|       |   `id` int(11) DEFAULT NULL,                                |
|       |   `hired` date DEFAULT NULL,                                |
|       |   `age` int(11) DEFAULT NULL,                               |
|       |   UNIQUE KEY `idx` (`id`,`hired`)                           |
|       | ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin |
|       | PARTITION BY RANGE COLUMNS(id,hired) (                      |
|       |   PARTITION `p0` VALUES LESS THAN (100,"1970-01-01"),       |
|       |   PARTITION `p2` VALUES LESS THAN (200,"1990-01-01"),       |
|       |   PARTITION `p3` VALUES LESS THAN (500,"2000-01-01"),       |
|       |   PARTITION `p4` VALUES LESS THAN (600,"2000-01-01")        |
|       | )                                                           |
+-------+-------------------------------------------------------------+

Check List

Tests

• Unit test

Release note

• No.

[crazycs520]

@tiancaiamao PTAL

[tiancaiamao]

LGTM