| =================================================================================================== |
| This document describes the type and source of all metadata used and requested from optimizer. GPDB |
| collects all these data using GPDB function wrappers. |
| Copyright (c) 2015-Present VMware, Inc. or its affiliates. |
| --------------------------------------------------------------------------------------------------- |
| |
| |
| Metadata Type (naucrates/md/IMDId.h) | Includes | Source |
| ------------------------------------------------------------------------------------------------------------------------------ |
| EmdidGPDB | Index | relcache |
| | Type | typcache & CatCache & Catalog(pg_type) |
| | Relation | relcache |
| | Scalar operator | Catalog(pg_operator) & CatCache |
| | Aggregate | Catalog(pg_proc, pg_aggregate) & CatCache |
| | Function | Catalog(pg_proc) & CatCache |
| | Trigger | Catalog(pg_trigger) & CatCache |
| | Constratint | Catalog(pg_constraint) & CatCache |
| ------------------------------------------------------------------------------------------------------------------------------- |
| EmdidRelStats | Relation Stats | relcache |
| ------------------------------------------------------------------------------------------------------------------------------- |
| EmdidColStats | Column statistics | relcache & Catalog(pg_statistic, pg_type) & CatCache |
| ------------------------------------------------------------------------------------------------------------------------------- |
| EmdidCastFunc | Cast Function | Catalog(pg_cast, pg_proc) & CatCache |
| ------------------------------------------------------------------------------------------------------------------------------- |
| EmdidScCmp | Scalar Comparison Function | Catalog(pg_amop, pg_operator) & CatCache |
