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MySQLのGISについてのちょっとした話

B1dca90d4b3ffd2ccd918774e1ba170d?s=47 hmatsu47
September 26, 2020

 MySQLのGISについてのちょっとした話

FOSS4G 2020 Hokkaido 懇親会 LT

B1dca90d4b3ffd2ccd918774e1ba170d?s=128

hmatsu47

September 26, 2020
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  1. None
  2. https://qiita.com/hmatsu47 ◦ https://qiita.com/hmatsu47/items/ceb75caf46e3c761095d ◦ ◦ https://booth.pm/ja/items/2062599 2

  3. • • • • ◦ • 3

  4. • • • • ◦ 4

  5. • • • • • http://isucon.net/ 5

  6. https://qiita.com/miyauchi/items/893f12679cb21c12c454 6

  7. https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-20.html#mysqld-8-0-20-bug 7

  8. ◦ https://nlftp.mlit.go.jp/ksj/index.html ◦ ▪ https://qiita.com/miyauchi/items/b4e810b3becf2cf07e2f https://github.com/hajime-miyauchi/shp2mysql 8

  9. 9 mysql> SHOW CREATE TABLE `n03-19_190101`\G *************************** 1. row ***************************

    Table: n03-19_190101 Create Table: CREATE TABLE `n03-19_190101` ( `gid` bigint(20) unsigned NOT NULL AUTO_INCREMENT, `n03_001` varchar(10) DEFAULT NULL, `n03_002` varchar(20) DEFAULT NULL, `n03_003` varchar(20) DEFAULT NULL, `n03_004` varchar(20) DEFAULT NULL, `n03_007` varchar(5) DEFAULT NULL, `geom` multipolygon /*!80003 SRID 4612 */ DEFAULT NULL, PRIMARY KEY (`gid`), UNIQUE KEY `gid` (`gid`) ) ENGINE=InnoDB AUTO_INCREMENT=117581 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci 1 row in set (0.00 sec) mysql> ALTER TABLE `n03-19_190101` MODIFY COLUMN `geom` multipolygon NOT NULL SRID 4612, ADD SPATIAL INDEX `geom_index` (`geom`); Query OK, 117580 rows affected (2 min 13.78 sec) Records: 117580 Duplicates: 0 Warnings: 0
  10. 10 mysql> EXPLAIN SELECT CONCAT(`n03_001`, `n03_003`, `n03_004`) AS `city` FROM

    `n03-19_190101` WHERE ST_Intersects(`geom`, ST_GeomFromText('POINT(43.06 141.34)', 4612)); +----+-------------+---------------+------------+-------+---------------+------------+---------+------+------+----------+-------------+ | id | select_type | table | partitions | type | possible_keys | key | key_len | ref | rows | filtered | Extra | +----+-------------+---------------+------------+-------+---------------+------------+---------+------+------+----------+-------------+ | 1 | SIMPLE | n03-19_190101 | NULL | range | geom_index | geom_index | 34 | NULL | 1 | 100.00 | Using where | +----+-------------+---------------+------------+-------+---------------+------------+---------+------+------+----------+-------------+ 1 row in set, 1 warning (0.00 sec) mysql> SELECT CONCAT(`n03_001`, `n03_003`, `n03_004`) AS `city` FROM `n03-19_190101` WHERE ST_Intersects(`geom`, ST_GeomFromText('POINT(43.06 141.34)', 4612)); +-----------------------------+ | city | +-----------------------------+ | 北海道札幌市中央区 | +-----------------------------+ 1 row in set (29.60 sec)
  11. 11 mysql> EXPLAIN SELECT CONCAT(`n03_001`, `n03_003`, `n03_004`) AS `city` FROM

    `n03-19_190101` WHERE ST_Intersects(`geom`, ST_GeomFromText('POINT(43.06 141.34)', 4612)); +----+-------------+---------------+------------+-------+---------------+------------+---------+------+------+----------+-------------+ | id | select_type | table | partitions | type | possible_keys | key | key_len | ref | rows | filtered | Extra | +----+-------------+---------------+------------+-------+---------------+------------+---------+------+------+----------+-------------+ | 1 | SIMPLE | n03-19_190101 | NULL | range | geom_index | geom_index | 34 | NULL | 1 | 100.00 | Using where | +----+-------------+---------------+------------+-------+---------------+------------+---------+------+------+----------+-------------+ 1 row in set, 1 warning (0.02 sec) mysql> SELECT CONCAT(`n03_001`, `n03_003`, `n03_004`) AS `city` FROM `n03-19_190101` WHERE ST_Intersects(`geom`, ST_GeomFromText('POINT(43.06 141.34)', 4612)); Empty set (0.38 sec)
  12. 12 mysql> EXPLAIN SELECT CONCAT(`n03_001`, `n03_003`, `n03_004`) AS `city` FROM

    `n03-19_190101` WHERE ST_Intersects(`geom`, ST_GeomFromText('POINT(43.06 141.34)', 4612)); +----+-------------+---------------+------------+-------+---------------+------------+---------+------+------+----------+-------------+ | id | select_type | table | partitions | type | possible_keys | key | key_len | ref | rows | filtered | Extra | +----+-------------+---------------+------------+-------+---------------+------------+---------+------+------+----------+-------------+ | 1 | SIMPLE | n03-19_190101 | NULL | range | geom_index | geom_index | 34 | NULL | 1 | 100.00 | Using where | +----+-------------+---------------+------------+-------+---------------+------------+---------+------+------+----------+-------------+ 1 row in set, 1 warning (0.02 sec) mysql> SELECT CONCAT(`n03_001`, `n03_003`, `n03_004`) AS `city` FROM `n03-19_190101` WHERE ST_Intersects(`geom`, ST_GeomFromText('POINT(43.06 141.34)', 4612)); Empty set (0.38 sec)
  13. 13

  14. 14 mysql> SELECT CONCAT(`n03_001`, `n03_003`, `n03_004`) AS `city` FROM `n03-19_190101`

    WHERE ST_Intersects(`geom`, ST_GeomFromText('POLYGON((43.05 141.33, 43.07 141.33, 43.07 141.35, 43.05 141.35, 43.05 141.33))', 4612)); +--------------------------+ | city | +--------------------------+ | 北海道札幌市北区 | +--------------------------+ 1 row in set (0.50 sec) mysql> SELECT CONCAT(`n03_001`, `n03_003`, `n03_004`) AS `city` FROM `n03-19_190101` WHERE ST_Within(ST_GeomFromText('POINT(43.06 141.34)', 4612), `geom`); Empty set (0.00 sec)
  15. 15

  16. ◦ ◦ https://fukuno.jig.jp/app/printmap/latlngmap.html https://fukuno.jig.jp/1330 16

  17. 17 mysql> ALTER TABLE `n03-19_190101` DROP INDEX `geom_index`; Query OK,

    0 rows affected (0.05 sec) Records: 0 Duplicates: 0 Warnings: 0 mysql> ALTER TABLE `n03-19_190101` ADD SPATIAL INDEX `geom_index` (`geom`); Query OK, 0 rows affected (2 min 27.82 sec) Records: 0 Duplicates: 0 Warnings: 0 mysql> SELECT CONCAT(`n03_001`, `n03_003`, `n03_004`) AS `city` FROM `n03-19_190101` WHERE ST_Intersects(`geom`, ST_GeomFromText('POINT(43.06 141.34)', 4612)); +-----------------------------+ | city | +-----------------------------+ | 北海道札幌市中央区 | +-----------------------------+ 1 row in set (0.02 sec)
  18. mysql> ALTER TABLE `n03-19_190101` DROP INDEX `geom_index`; Query OK, 0

    rows affected (0.05 sec) Records: 0 Duplicates: 0 Warnings: 0 mysql> ALTER TABLE `n03-19_190101` ADD SPATIAL INDEX `geom_index` (`geom`); Query OK, 0 rows affected (2 min 27.82 sec) Records: 0 Duplicates: 0 Warnings: 0 mysql> SELECT CONCAT(`n03_001`, `n03_003`, `n03_004`) AS `city` FROM `n03-19_190101` WHERE ST_Intersects(`geom`, ST_GeomFromText('POINT(43.06 141.34)', 4612)); +-----------------------------+ | city | +-----------------------------+ | 北海道札幌市中央区 | +-----------------------------+ 1 row in set (0.02 sec) 18
  19. mysql> SELECT CONCAT(`n03_001`, `n03_003`, `n03_004`) AS `city` FROM `n03-19_190101` WHERE

    ST_Intersects(`geom`, ST_GeomFromText('POLYGON((43.05 141.33, 43.07 141.33, 43.07 141.35, 43.05 141.35, 43.05 141.33))', 4612)); +-----------------------------+ | city | +-----------------------------+ | 北海道札幌市北区 | | 北海道札幌市中央区 | +-----------------------------+ 2 rows in set (0.02 sec) mysql> SELECT CONCAT(`n03_001`, `n03_003`, `n03_004`) AS `city` FROM `n03-19_190101` WHERE ST_Within(ST_GeomFromText('POINT(43.06 141.34)', 4612), `geom`); +-----------------------------+ | city | +-----------------------------+ | 北海道札幌市中央区 | +-----------------------------+ 1 row in set (0.01 sec) 19
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