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Dropped use of reltoastidxid field

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The same index can be reached going through reltoastrelid and
pg_index.indrelid: checked at least on PG 9.1.
This commit is contained in:
Daniele Varrazzo 2015-03-10 14:53:49 +00:00
parent 564f061beb
commit a49bb41822
3 changed files with 12 additions and 9 deletions
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4
META.json
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@ -2,7 +2,7 @@
"name": "pg_repack",
"abstract": "PostgreSQL module for data reorganization",
"description": "Reorganize tables in PostgreSQL databases with minimal locks",
"version": "1.3.0",
"version": "1.3.1-pg94",
"maintainer": [
"Josh Kupershmidt <schmiddy@gmail.com>",
"Daniele Varrazzo <daniele.varrazzo@gmail.com>",
@ -14,7 +14,7 @@
"provides": {
"pg_repack": {
"file": "lib/pg_repack.sql",
"version": "1.3.0",
"version": "1.3.1-pg94",
"abstract": "Reorganize tables in PostgreSQL databases with minimal locks"
}
},

5
lib/pg_repack.sql.in
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@ -172,7 +172,10 @@ CREATE VIEW repack.tables AS
SELECT R.oid::regclass AS relname,
R.oid AS relid,
R.reltoastrelid AS reltoastrelid,
CASE WHEN R.reltoastrelid = 0 THEN 0 ELSE (SELECT reltoastidxid FROM pg_class WHERE oid = R.reltoastrelid) END AS reltoastidxid,
CASE WHEN R.reltoastrelid = 0 THEN 0 ELSE (
SELECT indexrelid FROM pg_index
WHERE indrelid = R.reltoastrelid
AND indisvalid) END AS reltoastidxid,
N.nspname AS schemaname,
PK.indexrelid AS pkid,
CK.indexrelid AS ckid,

12
lib/repack.c
View File

@ -784,12 +784,12 @@ repack_swap(PG_FUNCTION_ARGS)
/* swap relfilenode and dependencies for tables. */
values[0] = ObjectIdGetDatum(oid);
execute_with_args(SPI_OK_SELECT,
"SELECT X.reltoastrelid, TX.reltoastidxid, X.relowner,"
" Y.oid, Y.reltoastrelid, TY.reltoastidxid, Y.relowner"
" FROM pg_catalog.pg_class X LEFT JOIN pg_catalog.pg_class TX"
" ON X.reltoastrelid = TX.oid,"
" pg_catalog.pg_class Y LEFT JOIN pg_catalog.pg_class TY"
" ON Y.reltoastrelid = TY.oid"
"SELECT X.reltoastrelid, TX.indexrelid, X.relowner,"
" Y.oid, Y.reltoastrelid, TY.indexrelid, Y.relowner"
" FROM pg_catalog.pg_class X LEFT JOIN pg_catalog.pg_index TX"
" ON X.reltoastrelid = TX.indrelid AND TX.indisvalid,"
" pg_catalog.pg_class Y LEFT JOIN pg_catalog.pg_index TY"
" ON Y.reltoastrelid = TY.indrelid AND TY.indisvalid"
" WHERE X.oid = $1"
" AND Y.oid = ('repack.table_' || X.oid)::regclass",
1, argtypes, values, nulls);