这几天做性能优化网上找了些资料
有时候需要导出某用户下的所有tableviewsequencetrigger等信息下面的SQL可以将这些信息select出来
select * from user_tables;
select * from user_views;
select * from user_sequences;
select * from user_triggers;
想查找表的数据条数
试试这个
select ttable_nametnum_rows from user_tables t
如果没有值那就创建个函数
代码
create or replace function count_rows(table_name in varchar
owner in varchar default null)
return number
authid current_user
IS
num_rows number;
stmt varchar();
begin
if owner is null then
stmt := select count(*) from ||table_name||;
else
stmt := select count(*) from ||owner||||table_name||;
end if;
execute immediate stmt into num_rows;
return num_rows;
end
再执行查询
select table_name count_rows(table_name) nrows from user_tables
