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Replicate generated columns when specified in the column list.

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This commit allows logical replication to publish and replicate generated
columns when explicitly listed in the column list. We also ensured that
the generated columns were copied during the initial tablesync when they
were published.

We will allow to replicate generated columns even when they are not
specified in the column list (via a new publication option) in a separate
commit.

The motivation of this work is to allow replication for cases where the
client doesn't have generated columns. For example, the case where one is
trying to replicate data from Postgres to the non-Postgres database.

Author: Shubham Khanna, Vignesh C, Hou Zhijie
Reviewed-by: Peter Smith, Hayato Kuroda, Shlok Kyal, Amit Kapila
Discussion: https://postgr.es/m/B80D17B2-2C8E-4C7D-87F2-E5B4BE3C069E@gmail.com
This commit is contained in:
Amit Kapila
2024-10-30 12:36:26 +05:30
parent f22e436bff
commit 745217a051
10 changed files with 145 additions and 74 deletions
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2
src/include/replication/logicalproto.h
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@@ -270,5 +270,7 @@ extern void logicalrep_read_stream_abort(StringInfo in,
LogicalRepStreamAbortData *abort_data,
bool read_abort_info);
extern const char *logicalrep_message_type(LogicalRepMsgType action);
extern bool logicalrep_should_publish_column(Form_pg_attribute att,
Bitmapset *columns);
#endif /* LOGICAL_PROTO_H */