mirror of
https://github.com/GreptimeTeam/greptimedb.git
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9a5fa49955
* feat: add function 'pg_catalog.pg_table_is_visible'q * feat: add 'pg_class' and 'pg_namespace', now we can run '\d' and '\dt'! * refactor: move memory_table::tables to utils::tables * refactor: move out predicate to system_schema to reuse it * feat: predicates pushdown * test: add pg_namespace, pg_class related sqlness test * fix: typos and license header * fix: sqlness test * refactor: use `expect` instead of `unwrap` here * refactor: remove the `information_schema::utils` mod * doc: make the comment in pg_get_userbyid more precise * doc: add TODO and comment in pg_catalog * fix: typo * fix: sqlness * doc: change to comment on PGClassBuilder to TODO
111 lines
3.2 KiB
SQL
111 lines
3.2 KiB
SQL
-- should not able to create pg_catalog
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create database pg_catalog;
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select * from pg_catalog.pg_type order by oid;
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-- \d
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SELECT n.nspname as "Schema",
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c.relname as "Name",
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CASE c.relkind WHEN 'r' THEN 'table' WHEN 'v' THEN 'view' WHEN 'm' THEN 'materialized view' WHEN 'i' THEN 'index' WHEN 'S' THEN 'sequence' WHEN 't' THEN 'TOAST table' WHEN 'f' THEN 'foreign table' WHEN 'p' THEN 'partitioned table' WHEN 'I' THEN 'partitioned index' END as "Type",
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pg_catalog.pg_get_userbyid(c.relowner) as "Owner"
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FROM pg_catalog.pg_class c
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LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
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WHERE c.relkind IN ('r','p','v','m','S','f','')
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AND n.nspname <> 'pg_catalog'
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AND n.nspname !~ '^pg_toast'
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AND n.nspname <> 'information_schema'
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AND pg_catalog.pg_table_is_visible(c.oid)
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ORDER BY 1,2;
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-- \dt
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SELECT n.nspname as "Schema",
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c.relname as "Name",
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CASE c.relkind WHEN 'r' THEN 'table' WHEN 'v' THEN 'view' WHEN 'm' THEN 'materialized view' WHEN 'i' THEN 'index' WHEN 'S' THEN 'sequence' WHEN 't' THEN 'TOAST table' WHEN 'f' THEN 'foreign table' WHEN 'p' THEN 'partitioned table' WHEN 'I' THEN 'partitioned index' END as "Type",
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pg_catalog.pg_get_userbyid(c.relowner) as "Owner"
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FROM pg_catalog.pg_class c
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LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
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WHERE c.relkind IN ('r','p','')
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AND n.nspname <> 'pg_catalog'
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AND n.nspname !~ '^pg_toast'
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AND n.nspname <> 'information_schema'
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AND pg_catalog.pg_table_is_visible(c.oid)
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ORDER BY 1,2;
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create
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database my_db;
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use my_db;
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create table foo
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(
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ts TIMESTAMP TIME INDEX
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);
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-- show tables in `my_db`
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select relname
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from pg_catalog.pg_class
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where relnamespace = (
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select oid
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from pg_catalog.pg_namespace
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where nspname = 'my_db'
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);
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-- \dt
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SELECT n.nspname as "Schema",
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c.relname as "Name",
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CASE c.relkind WHEN 'r' THEN 'table' WHEN 'v' THEN 'view' WHEN 'm' THEN 'materialized view' WHEN 'i' THEN 'index' WHEN 'S' THEN 'sequence' WHEN 't' THEN 'TOAST table' WHEN 'f' THEN 'foreign table' WHEN 'p' THEN 'partitioned table' WHEN 'I' THEN 'partitioned index' END as "Type",
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pg_catalog.pg_get_userbyid(c.relowner) as "Owner"
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FROM pg_catalog.pg_class c
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LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
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WHERE c.relkind IN ('r','p','')
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AND n.nspname <> 'pg_catalog'
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AND n.nspname !~ '^pg_toast'
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AND n.nspname <> 'information_schema'
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AND pg_catalog.pg_table_is_visible(c.oid)
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ORDER BY 1,2;
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-- show tables in `my_db`, `public`
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select relname
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from pg_catalog.pg_class
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where relnamespace in (
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select oid
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from pg_catalog.pg_namespace
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where nspname = 'my_db' or nspname = 'public'
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)
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order by relname;
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select relname
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from pg_catalog.pg_class
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where relnamespace in (
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select oid
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from pg_catalog.pg_namespace
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where nspname like 'my%'
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);
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select relnamespace, relname, relkind
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from pg_catalog.pg_class
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where relnamespace in (
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select oid
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from pg_catalog.pg_namespace
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where nspname <> 'public'
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and nspname <> 'information_schema'
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and nspname <> 'pg_catalog'
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)
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order by relnamespace, relname;
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use public;
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drop schema my_db;
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use pg_catalog;
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-- pg_class
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desc table pg_class;
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desc table pg_namespace;
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drop table my_db.foo;
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use public;
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