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SELECT * FROM [goods] DECLARE test_cursor CURSOR scroll FOR SELECT goods_no, [unitprice] FROM [goods] OPEN test_cursor DECLARE @goodsno INT DECLARE @num numeric(10, 2) FETCH next FROM test_cursor INTO @goodsno, @num WHILE @@FETCH_STATUS = 0 begin PRINT @goodsno ... 阅读全文
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二表数据合并到同一个表:select * from T1select * from T2select a.*,b.OutQty,c.InQty from ( select [DATE] from t1 union select [DATE] from t2) aleft join t1 b on a.[DATE] =b.[DATE] left join t2 c on a.[DATE] =c.[DATE] 阅读全文
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with temp as(select 'China' nation ,'Guangzhou' city from dual union allselect 'China' nation ,'Shanghai' city from dual union allselect 'China' nation ,'Beijing' city from dual union allselect 'USA' nation ,'New York' city from dual un 阅读全文
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oracle查询语句大全 oracle 基本命令大全 来源于:http://download.csdn.net/download/jia584643753/5875619 1.create user username identified by password;//建用户名和密码oracle ,oracle 2.grant connect,resource,dba to username;//授权 grant connect,resource,dba,sysdba to username; 3.connect username/password//进入。 4.select t... 阅读全文