Basic ADD COLUMN and DROP COLUMN replay support for PG, BQ and SF #368
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iskakaushik
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This PR is debugging an issue where schema change propagation (#368) don't apply properly when there are parallel transactions happening during an ALTER TABLE statement. Borrowing from jackc/pglogrepl#59 This PR changes the handling of clientXLogPos to match the one from Postgres' own `pg_recvlogical`: - keepalive messages should bump the position too, as they're only sent (from what I can tell) after any xlogdata message; - both the WALStart and the ServerWALEnd in logical xlogdata messages represent the position that should be reported back, and adding the length of the post-decoding data to it is meaningless; - relation messages have a position of zero, and in general we should match the pg_recvlogical behavior of only increasing the local position. --------- Co-authored-by: Kaushik Iska <[email protected]>
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#480) This PR adds on to the existing work towards syncing schema changes in CDC mirrors (#368): 1. handles an edge case where a column is dropped and recreated with a different data type in the same ALTER TABLE statement. 2. Adds quoting, guarding against case-sensitive column names and reserved identifiers. 3. Fixes type mapping for BigQuery Additionally, adds some tests for ReplayTableSchemaDelta for Postgres and Snowflake. Bigquery does not have tests yet but has been manually tested.
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