create table party_centification_bak as select * from party_centification where

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createtableparty_centification_bakasselect*fromparty_centificationwherecreatetableparty_centificatio

create table party_centification_bak as select * from party_centification where
create table party_centification_bak as select * from party_centification where

create table party_centification_bak as select * from party_centification where
新建表party_centification_bak,只复制party_centification表结构,不复制数据