Oracle 查詢數據庫表(查看當前用戶下的表)的數量
SELECT count(*)
FROM sys.user_tables;
統計表中記錄數量
第一步:新增count_rows 函數
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;
第二步:調用count_rows 函數,統計各種表的記錄數
select table_name, count_rows(table_name) nrows from user_tables
order by nrows desc;
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鏈接:https://blog.csdn.net/zhouzhiwengang/article/details/110862492