动态执行sql,返回一个值 PL/SQL dynamic SQL function dyn_sql(p_sql in varchar2) return varchar2 is c integer; result varchar2(4000); l_temp number; begin c := dbms_sql.open_cursor; dbms_sql.parse(c, p_sql, dbms_sql.native); if upper(p_sql) li
动态执行sql,返回一个值 PL/SQL dynamic SQL $velocityCount-->function dyn_sql(p_sql in varchar2) return varchar2 is c integer; result varchar2(4000); l_temp number; begin c := dbms_sql.open_cursor; dbms_sql.parse(c, p_sql, dbms_sql.native); if upper(p_sql) like 'SELECT%' then dbms_sql.define_column(c, 1, result, 4000); l_temp := dbms_sql.execute_and_fetch(c); if l_temp > 0 then dbms_sql.column_value(c, 1, result); else result := null; end if; else l_temp := dbms_sql.execute(c); result := null; end if; dbms_sql.close_cursor(c); return result; end dyn_sql;