From de55a6a4d23a58b6d899016fde7adf524c5fe937 Mon Sep 17 00:00:00 2001 From: Dilip Kumar Date: Wed, 24 Mar 2021 14:02:06 +0530 Subject: [PATCH v1] Fix attcompression for index expression columns For expression columns the attcompression was not set. So this patch set it to the default compression method for compressible types otherwise to the invalid compression method. --- src/backend/catalog/index.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c index 397d70d..b5a79ce 100644 --- a/src/backend/catalog/index.c +++ b/src/backend/catalog/index.c @@ -30,6 +30,7 @@ #include "access/relscan.h" #include "access/sysattr.h" #include "access/tableam.h" +#include "access/toast_compression.h" #include "access/transam.h" #include "access/visibilitymap.h" #include "access/xact.h" @@ -379,6 +380,16 @@ ConstructTupleDescriptor(Relation heapRelation, to->attalign = typeTup->typalign; to->atttypmod = exprTypmod(indexkey); + /* + * For expression column, if attribute type storage is compressible + * then set the default compression method, otherwise invalid + * compression method. + */ + if (IsStorageCompressible(typeTup->typstorage)) + to->attcompression = GetDefaultToastCompression(); + else + to->attcompression = InvalidCompressionMethod; + ReleaseSysCache(tuple); /* -- 1.8.3.1