sql - How to get table from value in another table

Question

I have a table with names of other tables. How can I create a query that gets the table from the values?

For example, if my table has the values:

tables
------
users
users2
users3

I want to create Dynamic SQL function that knows how to take the values (i.e. the table names) from the reference table and then select * from that named value.

Answer 1

如果您只想要一个一次性脚本，您可以运行查询：

select 'select * from ' || table_name || ';' cmd
from user_tables;

然后运行输出