MySQL查詢所有表的數據量
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這個是用mid()函數 截取字符串 mysql> select count(*) as '數量',mid(time,1,7) as month from my_add where time between '2015-01-01 00:00:00' and '2016-01-01 00 ...
快速查看SQL Server 中各表的數據量以及占用空間大小。 ...
查詢數據庫中每張表的記錄條數 ...
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select count(*) from table_name; ...