Firebird的Show Tables？那是MySQL的指令啦！

出處：FAQ for Firebird Users Migrating From MySQL

原文如下：

How to list all tables in a database?

In MySQL, you can do SHOW TABLES. You can use the same in Firebird's isql command-line tool, but nowhere else. However, this can be done by querying Firebird's system tables:

SELECT RDB$RELATION_NAME FROM RDB$RELATIONS;

This query will show you both system and user tables. To select user tables only, use this:

SELECT RDB$RELATION_NAME FROM RDB$RELATIONS WHERE RDB$SYSTEM_FLAG = 0;

Note for advanced users:
The above query will select both user tables and views. To select tables only use this:

SELECT RDB$RELATION_NAME FROM RDB$RELATIONS WHERE RDB$SYSTEM_FLAG = 0 AND RDB$VIEW_BLR IS NULL;

有看不懂的…再寫個意見給我吧。