postgresql.git - This is the main PostgreSQL git repository.

Age	Commit message (Collapse)	Author
2025-02-28	Refactor COPY FROM to use format callback functions.	Masahiko Sawada
	This commit introduces a new CopyFromRoutine struct, which is a set of callback routines to read tuples in a specific format. It also makes COPY FROM with the existing formats (text, CSV, and binary) utilize these format callbacks. This change is a preliminary step towards making the COPY FROM command extensible in terms of input formats. Similar to 2e4127b6d2d, this refactoring contributes to a performance improvement by reducing the number of "if" branches that need to be checked on a per-row basis when sending field representations in text or CSV mode. The performance benchmark results showed ~5% performance gain in text or CSV mode. Author: Sutou Kouhei <kou@clear-code.com> Reviewed-by: Masahiko Sawada <sawada.mshk@gmail.com> Reviewed-by: Michael Paquier <michael@paquier.xyz> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Tomas Vondra <tomas.vondra@enterprisedb.com> Reviewed-by: Junwang Zhao <zhjwpku@gmail.com> Discussion: https://postgr.es/m/20231204.153548.2126325458835528809.kou@clear-code.com
2025-02-27	Refactor COPY TO to use format callback functions.	Masahiko Sawada
	This commit introduces a new CopyToRoutine struct, which is a set of callback routines to copy tuples in a specific format. It also makes the existing formats (text, CSV, and binary) utilize these format callbacks. This change is a preliminary step towards making the COPY TO command extensible in terms of output formats. Additionally, this refactoring contributes to a performance improvement by reducing the number of "if" branches that need to be checked on a per-row basis when sending field representations in text or CSV mode. The performance benchmark results showed ~5% performance gain in text or CSV mode. Author: Sutou Kouhei <kou@clear-code.com> Reviewed-by: Masahiko Sawada <sawada.mshk@gmail.com> Reviewed-by: Michael Paquier <michael@paquier.xyz> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Tomas Vondra <tomas.vondra@enterprisedb.com> Reviewed-by: Junwang Zhao <zhjwpku@gmail.com> Discussion: https://postgr.es/m/20231204.153548.2126325458835528809.kou@clear-code.com