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Allow SET STATISTICS on expression indexes

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Index columns are referenced by ordinal number rather than name, e.g.
CREATE INDEX coord_idx ON measured (x, y, (z + t));
ALTER INDEX coord_idx ALTER COLUMN 3 SET STATISTICS 1000;

Incompatibility note for release notes:
\d+ for indexes now also displays Stats Target

Authors: Alexander Korotkov, with contribution by Adrien NAYRAT
Review: Adrien NAYRAT, Simon Riggs
Wordsmith: Simon Riggs
This commit is contained in:
Simon Riggs
2017-09-06 13:46:01 -07:00
parent e09db94c0a
commit 5b6d13eec7
13 changed files with 201 additions and 17 deletions
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src/backend/nodes/copyfuncs.c
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@ -3087,6 +3087,7 @@ _copyAlterTableCmd(const AlterTableCmd *from)
COPY_SCALAR_FIELD(subtype);
COPY_STRING_FIELD(name);
COPY_SCALAR_FIELD(num);
COPY_NODE_FIELD(newowner);
COPY_NODE_FIELD(def);
COPY_SCALAR_FIELD(behavior);