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Record the proper typmod for an index expression column.

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We should use exprTypmod() to extract the typmod of the expression,
instead of just blindly storing -1.  This seems to have been an aboriginal
oversight in commit fc8d970cbcdd6f025475822a4cf01dfda0873226 which
introduced general-expression indexes.  The consequences are only cosmetic
at present, since the index machinery doesn't really look at typmod for
index columns; but still it seems best to describe the column type as
precisely as we can.  Per off-list complaint from Thomas Fanghaenel.
This commit is contained in:
Tom Lane 2014-04-26 12:22:09 -04:00
parent 4bfc5f1396
commit 39b0c7681e
1 changed files with 1 additions and 1 deletions
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src/backend/catalog/index.c
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@ -389,7 +389,7 @@ ConstructTupleDescriptor(Relation heapRelation,
to->attalign = typeTup->typalign; to->attalign = typeTup->typalign;
to->attstattarget = -1; to->attstattarget = -1;
to->attcacheoff = -1; to->attcacheoff = -1;
to->atttypmod = -1; to->atttypmod = exprTypmod(indexkey);
to->attislocal = true; to->attislocal = true;
to->attcollation = collationObjectId[i]; to->attcollation = collationObjectId[i];