# Functions
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Parse a logical replication message.
# Constants
wal lsn游标不会变动.
wal lsn游标将会变动.
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ReplicaIdentityDefault 默认按照主键id为复制标识 update时无法得知详细更新column信息.
ReplicaIdentityFull 需要开启replica identity full权限的表 逻辑复制-更改复制标识 默认情况下，复制标识就是主键（如果有主键）。 也可以在复制标识上设置另一个唯一索引（有特定的额外要求）。 如果表没有合适的键，那么可以设置成复制标识“full”，它表示整个行都成为那个键。 不过，这样做效率很低，只有在没有其他方案的情况下才应该使用。.
# Structs
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# Type aliases
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表复制标识枚举.
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