select * into 新表名 from (select * from T1 union all select * from T2) 这个语句可以实现将合并的数据追加到一个新表中. 不合并重复数据 select * from T1 union all select * from T2 合并重复数据 select * from T1 union select * from T2 两个表,表1 表2 如果要将 表1的数据并入表2用以下语句即可 insert into 表2(字段1,字段2) se
select * from table1 union all select * from table2 union all 是所有的都显示出来: select * from table1 union select * from table2 union 是只显示不重复的,如果两个表的字段部分相同,把查询的字段写出来亦可
原文链接:http://www.cnblogs.com/onesmail/p/6148979.html 方法一: select distinct A.ID from A where A.ID not in (select ID from B) 方法二: select A.ID from A left join B on A.ID=B.ID where B.ID is null 方法三: select * from B where (select count(1) as num from A wh
说明: MBGL_GZJH jh_id 对应 mbgl_gzjh_fkmx jh_id mbgl_gzjh_fkmx jh_id 有重复多条,但是 FKRQ 不一样,我们去 FKRQ 最新的一条. select * FROM MBGL_GZJH A LEFT JOIN (select BC.* from (select max(FKRQ) as maxrq,JH_ID from mbgl_gzjh_fkmx GROUP BY JH_ID ) AC LEFT JOIN mbgl_gzjh_fkmx
记录,推荐使用第三种,个人觉得比较好 --第一种写法,之前一直用,没有在意 UPDATE sr_t_TCodeUserReciveCfg SET fUserID=a.fUserID,fImportFlag=NULL FROM dbo.vw_userinfo AS a INNER JOIN dbo.sr_t_TCodeUserReciveCfg AS b ON a.sLoginName=b.fImportFlag WHERE b.fImportFlag IS NOT NULL --第二种写法,发现
,,'')) FROM Table d GROUP by Id 另外: sql 单引号转义:两个单引号转义为一个单引号 set @sql='STUFF((SELECT '','' + Names FROM Table WHERE Id = d.Id FOR xml path('''') ),1,1,'''')) FROM Table d GROUP by Id ' '' 为 '
1,添加表B ,和A表表结构相同(带数据) create table B as select * from A; 2,添加表B ,和A表表结构相同(不带带数据) create table B as select * from A where 1=2; 3,存在一个表B和表A的表结构一致,将A中的数据复制给B表 insert into B select * from A; 4,存在一个表B和表A的表结构不一致,将A中的数据复制给B表 insert into B (x1,x2,x3...) se