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Michael Paquier e1551f96e6 Refactor attribute mappings used in logical tuple conversion ... Tuple conversion support in tupconvert.c is able to convert rowtypes between two relations, inner and outer, which are logically equivalent but have a different ordering or even dropped columns (used mainly for inheritance tree and partitions). This makes use of attribute mappings, which are simple arrays made of AttrNumber elements with a length matching the number of attributes of the outer relation. The length of the attribute mapping has been treated as completely independent of the mapping itself until now, making it easy to pass down an incorrect mapping length. This commit refactors the code related to attribute mappings and moves it into an independent facility called attmap.c, extracted from tupconvert.c. This merges the attribute mapping with its length, avoiding to try to guess what is the length of a mapping to use as this is computed once, when the map is built. This will avoid mistakes like what has been fixed in dc816e58, which has used an incorrect mapping length by matching it with the number of attributes of an inner relation (a child partition) instead of an outer relation (a partitioned table). Author: Michael Paquier Reviewed-by: Amit Langote Discussion: https://postgr.es/m/20191121042556.GD153437@paquier.xyz		6 years ago
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basebackup.h	Update copyright for 2019	7 years ago
decode.h	Make the order of the header file includes consistent.	6 years ago
logical.h	Make the order of the header file includes consistent.	6 years ago
logicalfuncs.h	Rework WAL-reading supporting structs	6 years ago
logicallauncher.h	Update copyright for 2019	7 years ago
logicalproto.h	Fix inconsistencies and typos in the tree	7 years ago
logicalrelation.h	Refactor attribute mappings used in logical tuple conversion	6 years ago
logicalworker.h	Update copyright for 2019	7 years ago
message.h	Phase 2 pgindent run for v12.	7 years ago
origin.h	Remove fmgr.h includes from headers that don't really need it.	6 years ago
output_plugin.h	Update copyright for 2019	7 years ago
pgoutput.h	Update copyright for 2019	7 years ago
reorderbuffer.h	Track statistics for spilling of changes from ReorderBuffer.	6 years ago
slot.h	Remove fmgr.h includes from headers that don't really need it.	6 years ago
snapbuild.h	Phase 2 pgindent run for v12.	7 years ago
syncrep.h	Update copyright for 2019	7 years ago
walreceiver.h	Make the order of the header file includes consistent.	6 years ago
walsender.h	Remove fmgr.h includes from headers that don't really need it.	6 years ago
walsender_private.h	Track statistics for spilling of changes from ReorderBuffer.	6 years ago
worker_internal.h	Phase 2 pgindent run for v12.	7 years ago