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Pre-release documentation. PostgreSQL 19 Beta 3 is a testing release. The final release may differ.

47.8. Logical Decoding Output Writers #

It is possible to add more output methods for logical decoding. For details, see src/backend/replication/logical/logicalfuncs.c. Essentially, three functions need to be provided: one to read WAL, one to prepare writing output, and one to write the output (see Section 47.7.5).

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