risingwave_frontend/catalog/system_catalog/pg_catalog/
pg_database.rs

1// Copyright 2025 RisingWave Labs
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use risingwave_common::types::Fields;
16use risingwave_frontend_macro::system_catalog;
17
18/// The catalog `pg_database` stores database.
19///
20/// Example from Postgres:
21///
22/// ```text
23/// dev=# select * from pg_catalog.pg_database;
24///   oid  |  datname  | datdba | encoding | datcollate | datctype | datistemplate | datallowconn | datconnlimit | datlastsysoid | datfrozenxid | datminmxid | dattablespace |         datacl
25/// -------+-----------+--------+----------+------------+----------+---------------+--------------+--------------+---------------+--------------+------------+---------------+-------------------------
26///  14021 | postgres  |     10 |        6 | C          | C        | f             | t            |           -1 |         14020 |          726 |          1 |          1663 |
27///  16384 | dev       |     10 |        6 | C          | C        | f             | t            |           -1 |         14020 |          726 |          1 |          1663 |
28///      1 | template1 |     10 |        6 | C          | C        | t             | t            |           -1 |         14020 |          726 |          1 |          1663 | {=c/eric,eric=CTc/eric}
29///  14020 | template0 |     10 |        6 | C          | C        | t             | f            |           -1 |         14020 |          726 |          1 |          1663 | {=c/eric,eric=CTc/eric}
30/// (4 rows)
31/// ```
32///
33/// Ref: [`pg_database`](https://www.postgresql.org/docs/current/catalog-pg-database.html)
34#[system_catalog(
35    view,
36    "pg_catalog.pg_database",
37    "SELECT id AS oid,
38        name AS datname,
39        owner AS datdba,
40        6 AS encoding,
41        'C' AS datcollate,
42        'C' AS datctype,
43        false AS datistemplate,
44        true AS datallowconn,
45        -1 AS datconnlimit,
46        1663 AS dattablespace,
47        acl AS datacl FROM rw_catalog.rw_databases"
48)]
49#[derive(Fields)]
50struct PgDatabase {
51    oid: i32,
52    datname: String,
53    datdba: i32,
54    encoding: i32,
55    datcollate: String,
56    datctype: String,
57    datistemplate: bool,
58    datallowconn: bool,
59    datconnlimit: i32,
60    dattablespace: i32,
61    datacl: Vec<String>,
62}
risingwave_frontend/catalog/system_catalog/pg_catalog/pg_database.rs

risingwave_frontend/catalog/system_catalog/pg_catalog/
pg_database.rs
