To see the effect of updating the database table underlying the CategoryBean entity EJB, sign on to the database's command-line interface and enter the following SQL statement.

如要看对实体e JB Category Be an下的数据库表进行更新的效果，请登录到数据库的命令行界面，并输入以下sql语句。

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A compiler command-line switch could perhaps enable variants on these keywords that would omit the dollar sign.

此时需要编译器的命令行开关提供支持，能使用这些关键字的变体，而不是忽略这个美元符号。

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