index_close(indrel, lockmode);

}

}

/*

* ALTER TABLE ALTER COLUMN SET STORAGE

*

AttrNumberattnum;

char *compression;

chartypstorage;

Oidcmoid;

charcmethod;

ObjectAddress address;

Assert(IsA(newValue, String));

format_type_be(atttableform->atttypid))));

/* get the attribute compression method. */

cmoid = GetAttributeCompression(atttableform, compression);

cmethod = GetAttributeCompression(atttableform, compression);

/* update pg_attribute entry */

atttableform->attcompression =cmoid;

atttableform->attcompression =cmethod;

CatalogTupleUpdate(attrel, &tuple->t_self, tuple);

InvokeObjectPostAlterHook(RelationRelationId,

* Apply the change to indexes as well (only for simple index columns,

* matching behavior of index.c ConstructTupleDescriptor()).

*/

SetIndexStorageProperties(rel, attrel, attnum,cmoid, '\0', lockmode);

SetIndexStorageProperties(rel, attrel, attnum,cmethod, '\0', lockmode);

heap_freetuple(tuple);

errdetail("This functionality requires the server to be built with lz4 support."), \

errhint("You need to rebuild PostgreSQL using --with-lz4.")))

#defineIsValidCompression(cm) ((cm) != InvalidCompressionMethod)

#defineIsStorageCompressible(storage) ((storage) != TYPSTORAGE_PLAIN && \

(storage) != TYPSTORAGE_EXTERNAL)