sqlplus>help @@@ (double "at" sign) ---------------------Runs the specified script. This command is almost identical to the @ command. It is useful for running nested scripts because it has the additional functionality of looking for the nested script in the same url or path as the calling script. Only the url form is supported in iSQL*Plus.@@ {url|file_name[.ext]} [arg ...]主要是一些sql会互相调用,这个时候用@@
---------------------Runs the specified script. This command is almost identical to
the @ command. It is useful for running nested scripts because it
has the additional functionality of looking for the nested script
in the same url or path as the calling script. Only the url form
is supported in iSQL*Plus.@@ {url|file_name[.ext]} [arg ...]主要是一些sql会互相调用,这个时候用@@