下面是现成的查询：

选择

'drop table if exists "' || tablename || '" cascade;' as pg_drop

FROM

pg_tables

哪里

schemaname='your schema';

根据上面的Pablo，从一个特定的模式中删除案例：

select 'drop table "' || tablename || '" cascade;' 
from pg_tables where schemaname = 'public';

只需执行以下查询：

DO $$ DECLARE
    r RECORD;
BEGIN
    FOR r IN (SELECT tablename FROM pg_tables WHERE schemaname = current_schema()) LOOP
        EXECUTE 'DROP TABLE IF EXISTS ' || quote_ident(r.tablename) || ' CASCADE';
    END LOOP;
END $$;

继Pablo和LenW之后，这里有一个单行程序，它既准备又执行：

psql-U$PGUSER$PGDB-t-c“从pg_tables中选择'drop table\”'||tablename||'\“cascade；'，其中schemaname='public'”|psql-U$PGUSER$PGDB

注意：设置$PGUSER和$PGDB或将其替换为所需的值

以防万一。。。清理Postgresql数据库的简单Python脚本

import psycopg2
import sys

# Drop all tables from a given database

try:
    conn = psycopg2.connect("dbname='akcja_miasto' user='postgres' password='postgres'")
    conn.set_isolation_level(0)
except:
    print "Unable to connect to the database."

cur = conn.cursor()

try:
    cur.execute("SELECT table_schema,table_name FROM information_schema.tables WHERE table_schema = 'public' ORDER BY table_schema,table_name")
    rows = cur.fetchall()
    for row in rows:
        print "dropping table: ", row[1]   
        cur.execute("drop table " + row[1] + " cascade") 
    cur.close()
    conn.close()        
except:
    print "Error: ", sys.exc_info()[1]

确保复制后缩进正确，因为Python依赖它。

drop schema public cascade;

应该会成功。