1.Oracle查询数据库中所有表的记录数,但是有可能不准建议用第二种方式进行查询 select t.table_name,t.num_rows from user_tables t 2.创建oracle函数,通过函数中查询词表记录数显示当前记录数 create or replace function count_rows(table_name in varchar2, owner in varchar2 default null) return number authid current_us…

select t.table_name,t.num_rows from user_tables t…

use information_schema; SELECT DISTINCT t.table_name, t.engine '表引擎', t.table_rowsFROM TABLES tWHERE 1 = 1AND t.table_schema = 'mysql_database_name'-- 自己数据库的名字 AND t. ENGINE IS NOT NULLORDER BY t.table_name,t.table_rows ; SELECTt.TABLE_SCHEMA '数据库',t…

SELECT TableName = obj.name, TotalRows = prt.rows, [SpaceUsed(KB)] = SUM(alloc.used_pages)* FROM sys.objects obj JOIN sys.indexes idx on obj.object_id = idx.object_id JOIN sys.partitions prt on obj.object_id = prt.object_id JOIN sys.allocation_units…

select schema_name(t.schema_id) as [ Schema ], t. name as TableName,i. rows as [RowCount] from sys.tables as t, sysindexes as i where t.object_id = i.id and i.indid <=1…

select a.name,b.rows from sysobjects a,sysindexes b where a.name = b.name order by b.rows desc…

use information_schema; select table_name,table_rows from tables where TABLE_SCHEMA = 'testdb'  order by table_rows desc;…

查询数据库中所有表名select table_name from information_schema.tables where table_schema='csdb' and table_type='base table'; 查询指定数据库中指定表的所有字段名column_nameselect column_name from information_schema.columns where table_schema='csdb' and table_name='users'…

查询数据库中所有表名select table_name from information_schema.tables where table_schema='数据库名' and table_type='base table';查询指定数据库中指定表的所有字段名column_nameselect column_name from information_schema.columns where table_schema='数据库名' and table_name='表名'; #查看分布式系统中不同…

Oracle: SELECT * FROM ALL_TABLES;系统里有权限的表 SELECT * FROM DBA_TABLES; 系统表 SELECT * FROM USER_TABLES; 当前用户下的表     Sql Server 1,利用sysobjects系统表 在这个表中,在数据库中创建的每个对象(例如约束.默认值.日志.规则以及存储过程)都有对应一行,我们在该表中筛选出xtype等于U的所有记录,就为数据库中的表了. 示例语句如下:: select * from sysobj…