ClickHouse/docs/ja/engines/database-engines/mysql.md
Ivan Blinkov cd14f9ebcb
SQL reference refactoring (#10857)
* split up select.md

* array-join.md basic refactoring

* distinct.md basic refactoring

* format.md basic refactoring

* from.md basic refactoring

* group-by.md basic refactoring

* having.md basic refactoring

* additional index.md refactoring

* into-outfile.md basic refactoring

* join.md basic refactoring

* limit.md basic refactoring

* limit-by.md basic refactoring

* order-by.md basic refactoring

* prewhere.md basic refactoring

* adjust operators/index.md links

* adjust sample.md links

* adjust more links

* adjust operatots links

* fix some links

* adjust aggregate function article titles

* basic refactor of remaining select clauses

* absolute paths in make_links.sh

* run make_links.sh

* remove old select.md locations

* translate docs/es

* translate docs/fr

* translate docs/fa

* remove old operators.md location

* change operators.md links

* adjust links in docs/es

* adjust links in docs/es

* minor texts adjustments

* wip

* update machine translations to use new links

* fix changelog

* es build fixes

* get rid of some select.md links

* temporary adjust ru links

* temporary adjust more ru links

* improve curly brace handling

* adjust ru as well

* fa build fix

* ru link fixes

* zh link fixes

* temporary disable part of anchor checks
2020-05-15 07:34:54 +03:00

4.1 KiB

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true 72537a2d52 30 MySQL

MySQL

で接続するデータベースのリモートMySQLサーバを実行 INSERTSELECT ClickHouseとMySQLの間でデータを交換するためのクエリ。

その MySQL データベースエンジ SHOW TABLES または SHOW CREATE TABLE.

次のクエリは実行できません:

  • RENAME
  • CREATE TABLE
  • ALTER

データベースの作成

CREATE DATABASE [IF NOT EXISTS] db_name [ON CLUSTER cluster]
ENGINE = MySQL('host:port', ['database' | database], 'user', 'password')

エンジン変数

  • host:port — MySQL server address.
  • database — Remote database name.
  • user — MySQL user.
  • password — User password.

データ型のサポート

MySQL クリックハウス
UNSIGNED TINYINT UInt8
TINYINT Int8
UNSIGNED SMALLINT UInt16
SMALLINT Int16
UNSIGNED INT, UNSIGNED MEDIUMINT UInt32
INT, MEDIUMINT Int32
UNSIGNED BIGINT UInt64
BIGINT Int64
FLOAT Float32
DOUBLE Float64
DATE 日付
DATETIME, TIMESTAMP DateTime
BINARY FixedString

他のすべてのMySQLデータ型に変換され 文字列.

Null可能 サポートされます。

使用例

MySQLのテーブル:

mysql> USE test;
Database changed

mysql> CREATE TABLE `mysql_table` (
    ->   `int_id` INT NOT NULL AUTO_INCREMENT,
    ->   `float` FLOAT NOT NULL,
    ->   PRIMARY KEY (`int_id`));
Query OK, 0 rows affected (0,09 sec)

mysql> insert into mysql_table (`int_id`, `float`) VALUES (1,2);
Query OK, 1 row affected (0,00 sec)

mysql> select * from mysql_table;
+------+-----+
| int_id | value |
+------+-----+
|      1 |     2 |
+------+-----+
1 row in set (0,00 sec)

ClickHouseのデータベース、MySQLサーバとのデータ交換:

CREATE DATABASE mysql_db ENGINE = MySQL('localhost:3306', 'test', 'my_user', 'user_password')
SHOW DATABASES
┌─name─────┐
│ default  │
│ mysql_db │
│ system   │
└──────────┘
SHOW TABLES FROM mysql_db
┌─name─────────┐
│  mysql_table │
└──────────────┘
SELECT * FROM mysql_db.mysql_table
┌─int_id─┬─value─┐
│      1 │     2 │
└────────┴───────┘
INSERT INTO mysql_db.mysql_table VALUES (3,4)
SELECT * FROM mysql_db.mysql_table
┌─int_id─┬─value─┐
│      1 │     2 │
│      3 │     4 │
└────────┴───────┘

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