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【DM版本】:
【操作系统】：
【CPU】:
【问题描述】：```language
--业务用户执行
CREATE OR REPLACE FUNCTION count_rows (
table_name IN varchar2,
owner IN varchar2 := NULL
)
RETURN number AUTHID current_user
AS
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;
/

--查询记录数
select table_name, count_rows(table_name) nrows from user_tables;

为啥上述语句在sysdba用户下执行
查询记录数返回的是
SQL> select table_name, count_rows(table_name) nrows from user_tables;

LINEID table_name nrows

1 ##PLAN_TABLE 0
2 ##HISTOGRAMS_TABLE 0

我在业务用户下执行就返回好多条记录