Oracle Migration Guide
Upgrading to 0.3.0
This version removes the option to use "normalization" with Oracle. It also changes the schema and database of Airbyte's "raw" tables to be compatible with the new Destinations V2 format. These changes will likely require updates to downstream dbt / SQL models. After this update, Airbyte will only produce the ‘raw’ v2 tables, which store all content in JSON. These changes remove the ability to do deduplicated syncs with Clickhouse.
This upgrade will ignore any existing raw tables and will not migrate any data to the new schema. For each stream, you could perform the following query to migrate the data from the old raw table to the new raw table:
-- assumes your database was 'PUBLIC'
-- replace `{{stream_name}}` with replace your stream name
CREATE TABLE airbyte_internal.public_raw__stream_{{stream_name}}
(
_airbyte_raw_id VARCHAR(64) PRIMARY KEY,
_airbyte_data JSON,
_airbyte_extracted_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
_airbyte_loaded_at TIMESTAMP WITH TIME ZONE DEFAULT NULL,
_airbyte_meta JSON
);
INSERT INTO airbyte_internal.default_raw__stream_{{stream_name}}
SELECT
_airbyte_ab_id AS "_airbyte_raw_id",
_airbyte_emitted_at AS "_airbyte_extracted_at",
NULL AS "_airbyte_loaded_at",
_airbyte_data AS "_airbyte_data"
FROM default._airbyte_raw_{{stream_name}};
Airbyte will not delete any of your v1 data.
Database/Schema and the Internal Schema
We have split the raw and final tables into their own schemas, which means that
we will only write into the raw table which will live in the airbyte_internal schema.
The tables written into this schema will be prefixed with either the default schema provided in
the Default Schema field when configuring clickhouse (but can also be overridden in the connection). You can
change the "raw" database from the default airbyte_internal by supplying a value for
Raw Table Schema Name.
For Example:
- Default Schema:
default - Stream Name:
my_stream
Writes to airbyte_intneral.default_raw__stream_my_stream
where as:
- Default Schema:
default - Stream Name:
my_stream - Raw Table Schema Name:
raw_data
Writes to: raw_data.default_raw__stream_my_stream