Split ExecUpdate and ExecDelete into reusable pieces Create subroutines ExecUpdatePrologue / ExecUpdateAct / ExecUpdateEpilogue, and similar for ExecDelete.
Introduce a new struct to be used internally in nodeModifyTable.c, dubbed ModifyTableContext, which contains all context information needed to perform these operations, as well as ExecInsert and others. This allows using a different schedule and a different way of evaluating the results of these operations, which can be exploited by a later commit introducing support for MERGE. It also makes ExecUpdate and ExecDelete proper shorter and (hopefully) simpler. Author: Álvaro Herrera <[email protected]> Reviewed-by: Amit Langote <[email protected]> Reviewed-by: Japin Li <[email protected]> Reviewed-by: Zhihong Yu <[email protected]> Discussion: https://postgr.es/m/[email protected] Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/25e777cf8e547d7423d2e1e9da71f98b9414d59e Modified Files -------------- src/backend/executor/nodeModifyTable.c | 781 ++++++++++++++++++++------------- src/tools/pgindent/typedefs.list | 2 + 2 files changed, 484 insertions(+), 299 deletions(-)
