refactor: remove `Internal` node and add more system catalogs

risinglightdb / risinglight

An educational OLAP database system.

Apache License 2.0

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Closed wangrunji0408 closed 7 months ago

wangrunji0408 commented 7 months ago

remove Internal node from plan, merged into Scan node
replace InternalTableExecutor by SystemTableScanExecutor
add new system tables: pg_tables, pg_attribute and pg_stat
expand commands like \dt to scan from system tables
~~remove hardcoded contributor list, fetch from Github instead~~ update contributor list