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备份表或者备份表结构,

备份表或者备份表结构,


1、既复制表结构也复制表内容的SQL语句:CREATE TABLE table_new AS SELECT * FROM table_old;
2、只复制表结构不复制表内容的SQL语句:CREATE TABLE table_new AS SELECT * FROM table_old WHERE 1=2;
3、不复制表结构,只复制内容的sql语句:insert into table_new select * from table_old;或者SELECT vale1, value2 into Table2 from Table1

www.htsjk.Com true http://www.htsjk.com/teradata/30748.html NewsArticle 备份表或者备份表结构, 1、既复制表结构也复制表内容的SQL语句:CREATE TABLE table_new AS SELECT * FROM table_old;2、只复制表结构不复制表内容的SQL语句:CREATE TABLE table_new AS SELECT * FROM table_...
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