String sql = "select * from sys_user where 1=2"與String sql = "select * from sys_user where 1=1的對比介紹

今天在公司的項目中看到String sql = "select * from sys_user where 1=2";還有String sql = "select * from sys_user where 1=1";這些sql語句,看了半天不大明白什麼意思,請教了一下大佬,總結整理了一下; String sql = "select * from sys_user where 1=2和 Strin

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