你知道這顯示\dt+
下可以逆向工程什麼的psql與-E
-E --echo-hidden
回波就由\ d和其他反斜槓命令生成的實際查詢。你可以用它來研究psql的內部操作。這相當於將變量ECHO_HIDDEN設置爲打開。
psql -d test -E -c'\dt+ foo'
********* QUERY **********
SELECT n.nspname as "Schema",
c.relname as "Name",
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 's' THEN 'special' WHEN 'f' THEN 'foreign table' END as "Type",
pg_catalog.pg_get_userbyid(c.relowner) as "Owner",
pg_catalog.pg_size_pretty(pg_catalog.pg_table_size(c.oid)) as "Size",
pg_catalog.obj_description(c.oid, 'pg_class') as "Description"
FROM pg_catalog.pg_class c
LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE c.relkind IN ('r','s','')
AND n.nspname !~ '^pg_toast'
AND c.relname ~ '^(foo)$'
AND pg_catalog.pg_table_is_visible(c.oid)
ORDER BY 1,2;
**************************
你可以在這裏看到所有的信息PSQL節目。正如他們所說,教導那個人釣魚......?
@mpen建議的重複地址表的評論,雖然類似沒有明確回答我的問題,關於_column_評論需要不同的方法。 –