一、逻辑复制的应用场景
二、逻辑复制的原理
三、逻辑复制搭建步骤
Command: CREATE PUBLICATION Description: define a new publication Syntax: CREATE PUBLICATION name [ FOR TABLE [ ONLY ] table_name [ * ] [, ...] | FOR ALL TABLES ] [ WITH ( publication_parameter [= value] [, ... ] ) ] where option can be: PUBLISH INSERT | NOPUBLISH INSERT | PUBLISH UPDATE | NOPUBLISH UPDATE | PUBLISH DELETE | NOPUBLISH DELETE 默认发布insert,update,delete。
Command: ALTER PUBLICATION
Description: change the definition of a publication
Syntax:
ALTER PUBLICATION name WITH ( option [, ... ] ) where option can be:
PUBLISH INSERT | NOPUBLISH INSERT
| PUBLISH UPDATE | NOPUBLISH UPDATE
| PUBLISH DELETE | NOPUBLISH DELETE
ALTER PUBLICATION name ADD TABLE [ ONLY ] table_name [ * ] [, ...]ALTER PUBLICATION name SET TABLE [ ONLY ] table_name [ * ] [, ...]ALTER PUBLICATION name DROP TABLE [ ONLY ] table_name [ * ] [, ...]ALTER PUBLICATION name SET ( publication_parameter [= value] [, ... ] )ALTER PUBLICATION name OWNER TO { new_owner | CURRENT_USER | SESSION_USER }ALTER PUBLICATION name RENAME TO new_name
Command: CREATE SUBSCRIPTION
Description: define a new subscription
Syntax:
CREATE SUBSCRIPTION subscription_name CONNECTION 'conninfo' PUBLICATION { publication_name [, ...] } [ WITH ( subscription_parameter [= value] [, ... ] ) ]
Command: ALTER SUBSCRIPTION
Description: change the definition of a subscription
Syntax:
ALTER SUBSCRIPTION name WITH ( option [, ... ] ) ] where option can be:
SLOT NAME = slot_name
ALTER SUBSCRIPTION name CONNECTION 'conninfo'ALTER SUBSCRIPTION name SET PUBLICATION publication_name [, ...] [ WITH ( set_publication_option [= value] [, ... ] ) ]ALTER SUBSCRIPTION name REFRESH PUBLICATION [ WITH ( refresh_option [= value] [, ... ] ) ]ALTER SUBSCRIPTION name ENABLE
ALTER SUBSCRIPTION name DISABLE
ALTER SUBSCRIPTION name SET ( subscription_parameter [= value] [, ... ] )ALTER SUBSCRIPTION name OWNER TO { new_owner | CURRENT_USER | SESSION_USER }ALTER SUBSCRIPTION name RENAME TO new_name
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可以看到与逻辑解析相关的两个重要部分是Publication和Subscription。