摘要：
create or replace function remove_constants(p_query in varchar2) return varchar2 as l_query long; l_char varchar2(1); l_in_quotes boolean default false;begin for i in 1 .. length(p_query) loop l_char := substr(p_query, i, 1); if (l_char = '''' and l_in_quotes) then l_in_quotes := fal 阅读全文
