摘要: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
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posted @ 2015-08-14 16:48
月下飞舞,蝶出魅影
posted @ 2015-08-14 16:48
posted @ 2015-08-14 16:36
posted @ 2015-08-14 11:22