Oracle count方式统计表数据量
2017-08-15数据库站长8409°c
A+ A-select a.table_name,comments, xw_count_rows(a.table_name) nrows , '/*'||b.comments||'*/ '|| 'truncate table ' || a.table_name || ';' as sql_text from user_tables a,all_tab_comments b where a.table_name = b.table_name and a.table_name like 'T%' and xw_count_rows(a.table_name) > 0 order by xw_count_rows(a.table_name) desc; /* ----函数传入表名,获取表count create or replace function xw_count_rows(table_name in varchar2, owner in varchar2 default null) return number authid current_user IS num_rows number; stmt varchar2(2000); 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; */